Bottom Drive Patents (Class 68/133)
  • Patent number: 7069752
    Abstract: An agitator assembly includes an agitator body and an auger body mounted on the upper end of the agitator body. There are at least three separate helical flighting segments on the auger body. Bearings are provided at the upper end of the auger body and at the lower end of the auger body. At least one of the bearings limits both radial and axial movement of the auger relative to the agitator whereas the other of the bearings limits only radial movement of the auger relative to the body. Inlet openings are provided adjacent the lower surfaces of the auger flightings permit fluid to enter the interior of the auger barrel. An elastomeric ring is provided for attaching a fabric softener dispenser to the agitator assembly and for permitting grasping and removal of the dispenser.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: July 4, 2006
    Assignee: Maytag Corporation
    Inventors: Douglas S. Clark, Jon D. Strait, Vicki A. Rogers, Inho Andy Shin, Lisa Hood
  • Patent number: 7047770
    Abstract: An apparatus, method and system of wash action control for an automatic washing machine. A manually operable user interface allows selection from between a plurality of discrete agitation speed selections which comprise at least a continuous speed agitation mode for a given agitation period during a wash cycle and an intermittent speed agitation mode for at least a part of a given agitation period. The intermittent speed agitation mode automatically varies agitation speed between at least two sub-periods of the given agitation period. The variation in agitation speed can be between a faster and a slower speed or a certain speed and no agitation.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: May 23, 2006
    Assignee: Maytag Corporation
    Inventors: John F. Broker, Jordan S. Bruntz, Donald E. Erickson, Scott E. Griffith, Douglas A. Ochsner, Gary T. Ostrander, Evan R. Vande Haar
  • Patent number: 7028512
    Abstract: A washing machine is provided, which washes laundry by mechanisms of vibration or/and pumping, thereby improving washing performance, and preventing the laundry from being damaged while reducing consumption of washing water. The washing machine includes an outer tub for storage of washing water, a washing tub mounted in the outer tub, an impeller rotatably fitted in a lower part of an inside of the washing tub for pumping the washing water in a space between the washing tub and the outer tub, a washing plate up and down movably fitted inside of the washing tub, a driving motor under the outer tub, and a power transmission connected to the driving motor for transmitting a rotation power of the driving motor to the impeller with a reduced speed, and transmitting a rotation power of the driving motor to the washing plate with the rotation power converted into up and down direction power.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: April 18, 2006
    Assignee: LG Electronics Inc.
    Inventor: Jae won Chang
  • Patent number: 7013517
    Abstract: A combination rotating/tipping mechanism for an agitator arranged in an inner tub of a washing machine includes a drive member, a tipping member fixedly mounted to the agitator and pivotally mounted to the drive member, and a pivot link interconnecting the tipping member and the inner tub of the machine. In operation, rotation of the drive member imparts an oscillating/rotating motion to the tipping member about a rotational axis. Simultaneously, the pivot link is caused to pivot about a pivotal axis, thereby restricting the movement of the tipping member and causing the tipping member to pivot about another pivotal axis.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: March 21, 2006
    Assignee: Maytag Corp.
    Inventor: Keith E. Kropf
  • Patent number: 6951121
    Abstract: The present invention relates a washing machine of direct drive pulsator manner that is directly connected to a motor. In this washing machine, the conversion of cleansing/dehydrating processes can be smoothly achieved by a floatage clutch capable of being actuated by floatage and gravity to be induced during the supply/drain of water.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: October 4, 2005
    Assignee: LG Electronics INC
    Inventors: Tae Hee Lee, Jin Woong Kim, Si Moon Jeon
  • Patent number: 6901778
    Abstract: A clutch apparatus of a washing machine is provided. The clutch apparatus includes a coupling unit comprising a magnetic unit at least in one part, combined around the basket shaft, and combined with a rotor of the driving motor in a state where the coupling unit moves downward, the coupling unit for transmitting the rotary power of the driving motor to the basket shaft and a solenoid actuator comprising a solenoid coil and fixed to the lower portion of the tub, the solenoid actuator for supplying electromagnetic repulsive force between the solenoid actuator and the coupling unit so that the coupling unit is separated from the rotor of the driving motor, to thus push the coupling unit upward. The clutch apparatus is formed to have a repulsive type structure unlike a conventional attractive type clutch apparatus. Accordingly, it is possible to collision noise generated when the coupling unit rises and to reduce the amount of consumption of power for maintaining a state where the coupling member rises.
    Type: Grant
    Filed: January 4, 2002
    Date of Patent: June 7, 2005
    Assignee: LG Electronics Inc.
    Inventors: Dong Hun Kim, Jun Ho Ahn
  • Patent number: 6886372
    Abstract: A tipping mechanism for a vertical axis washing machine includes an agitator, a drive member, a tipping member and a stationary pivot member. The pivot member preferably takes the form of a ball which is received in a socket defined by the tipping member. In a preferred form of the invention, the pivot member is provided with at least one guide member which is received in an arcuate channel, including both horizontal and vertical components, defined by the tipping member. In operation, the drive member causes the tipping member to rotate, while the arrangement of the guide member in the arcuate channel forces the tipping member to shift in various planes. This movement imparts a combination rotating and tipping motion to the agitator.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: May 3, 2005
    Assignee: Maytag Corporation
    Inventor: Keith E. Kropf
  • Patent number: 6865912
    Abstract: A washing machine is disclosed, in which a structure of transmitting power to a wobbler is improved. The outer tub is provided in a cabinet, an inner tub rotatably provided in the outer tub, and the wobbler is provided in the inner tub. A cylindrical dehydration shaft passes through the outer tub, and is connected to a bottom of the inner tub, and a wash shaft passes through inside of the dehydration shaft and the bottom of the inner tub. A motor rotates the wash shaft in a direction or in an opposite direction. A clutch assembly, operated according to a signal of a control unit, selectively transmits rotating force of the wash shaft to the dehydration shaft. A rotation guide having a flat section in spiral form is projected on the upper end of the wash shaft.
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: March 15, 2005
    Assignee: LG Electronics Inc.
    Inventor: Kyeong Hwan Kim
  • Patent number: 6860124
    Abstract: A brake cam actuator assembly for a washing machine includes an actuator having a cylindrical body that is drivingly coupled to a transmission pulley hub through a wrap spring clutch circumscribing the transmission pulley hub and brake cam actuator body. A first end of the brake cam actuator includes a segmented ring that reduces knocking noises due to imperfections and manufacturing defects in the transmission pulley hub and brake cam actuator first end which interface one another. The segmented ring also forms controlled flow path for normal fluid leaks and prevents contamination of a ramped cam surface on a second end of brake cam actuator and contamination of a friction brake surface that may produce friction material squeaking noises.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: March 1, 2005
    Assignee: General Electric Company
    Inventors: Emile Edward Abi-Habib, Stephen Bernard Froelicher
  • Publication number: 20040261197
    Abstract: Device and method for detecting malfunction of a clutch in a washing machine, the device including a clutch including a coupling for transmission of a power from a motor to a washing shaft or a spinning shaft, a clutch motor (60) for providing a power to the coupling, a switch for controlling the coupling, and a cam (600) fitted to be rotatable with the clutch motor for turning on/off the switch in response to the rotation, a power supplying part for supplying a voltage to the motor and the clutch motor (60), a pulse counting part for counting a number of pulses of a voltage supplied to the clutch motor from the power supplying part, and a microcomputer for repeating a process in which the clutch motor is stopped for a second set time period (S20) and operated again if the switch is not switched for a first set time period from a time the clutch motor is put into operation, and informs to a user that the clutch is in malfunction if the switch is not switched while the process is repeated equal to or more than
    Type: Application
    Filed: August 24, 2004
    Publication date: December 30, 2004
    Inventors: In Haeng Cho, Jae Cheol Lyu, Bon Kwon Koo, Kwon Ki Hong, Min Jin Oh, Du Heig Choi
  • Publication number: 20040168261
    Abstract: A washing machine includes a washing machine cabinet. A wash basket is mounted within the washing machine cabinet. A first agitator is mounted in the basket for rotation about a first agitator axis that extends in a direction different from the rotational axis of the wash basket. First agitator includes a first helical rib thereon for engaging and agitating the materials to be washed within the wash basket. A second agitator with a second helical rib may also be contained within the wash basket.
    Type: Application
    Filed: February 27, 2003
    Publication date: September 2, 2004
    Applicant: Maytag Corporation
    Inventors: Scott E. Griffith, Chris P. Lickiss, Craig S. Ruhl
  • Publication number: 20040168482
    Abstract: Method for controlling a full automatic washing machine, the method comprising a washing cycle, a rinsing cycle, and a dewatering cycle, wherein the washing or the rinsing cycle includes the step of rotating an inner tub at a high speed higher than a preset speed in one direction, thereby making a centrifugal force caused by high speed rotation of the inner tub, to push laundry against a wall of the inner tub, to enforce washing water in the inner tub to penetrate through the laundry at a speed higher than required to make the washing done, and to pump the washing water penetrated through the laundry and discharged into an outer tub upward, to recirculate to the inner tub.
    Type: Application
    Filed: December 1, 2003
    Publication date: September 2, 2004
    Applicant: LG Electronics, Inc.
    Inventors: Jae Cheol Lyu, Sung Jin Cho, Hyung Dae Ryu, Chang Sik Kang, Ji Maeng Kim
  • Publication number: 20040154354
    Abstract: A washing machine with a wobbling unit including a washing plate which wobbles in a vertical direction without rotating, thus washing laundry. The wobbling unit further includes a vertical rotating shaft rotating by a washing shaft and an inclined rotating shaft provided at a predetermined position above the vertical rotating shaft. A first rotary member allows the vertical rotating shaft to rotate along with the inclined rotating shaft. A second rotary member rotatably receives the inclined rotating shaft therein. The wobbling unit also includes a projecting pin, a wobbling pin, and a leveling pin to control positions of the first and second rotary members. A position of the washing plate is changed to a level position or a wobbling position by an operation of the pins. Further, a clutch is mounted to the second rotary member so that the position of the washing plate is securely changed to a desired position.
    Type: Application
    Filed: December 19, 2003
    Publication date: August 12, 2004
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Myung-Gyu Lee, Hyung-Gyoon Kim, Chan-Woo Park, Sang-Goo Yoon
  • Publication number: 20040154345
    Abstract: A structure for cooling a motor of a washing machine is disclosed, which is suitable for improving cooling efficiency of the motor. A structure for cooling a motor of a washing machine, the washing machine provided with a motor assembly including a cylindrical rotor in an inner circumferential surface of a rotor housing, and a cylindrical rotor in an inner circumferential surface of the rotor, is provided with a plurality of holes on a lower surface of the rotor housing forming the stator; and a plurality of blades, each provided in one side of the hole.
    Type: Application
    Filed: November 25, 2003
    Publication date: August 12, 2004
    Inventor: Yong Suck Park
  • Publication number: 20040139767
    Abstract: In the context of a single-phase universal motor, which has proven its worth in particular as an agile washing machine drive, the novel control provides for a substantial reduction in the remagnetization losses, rotary speed dependency, level of efficiency, and the fluctuations in the motor current pulsating at double the mains frequency, together with the resulting losses and production of noise in particular because of torque fluctuations and electromagnetically excited oscillations of the stator iron core. The motor is no longer operated by way of the phase-angle control, which is synchronized with the mains frequency, of a pulse-fired triac which is self-turning off with the current zero crossing and also no longer operated by way of the pulse duty factor of a chopper oscillating freely at high frequency.
    Type: Application
    Filed: January 5, 2004
    Publication date: July 22, 2004
    Inventors: Martin Weinmann, Roland Morent
  • Publication number: 20040123632
    Abstract: A washing machine is disclosed, in which a structure of transmitting power to a wobbler is improved. The outer tub is provided in a cabinet, an inner tub rotatably provided in the outer tub, and the wobbler is provided in the inner tub. A cylindrical dehydration shaft passes through the outer tub, and is connected to a bottom of the inner tub, and a wash shaft passes through inside of the dehydration shaft and the bottom of the inner tub. A motor rotates the wash shaft in a direction or in an opposite direction. A clutch assembly, operated according to a signal of a control unit, selectively transmits rotating force of the wash shaft to the dehydration shaft. A rotation guide having a flat section in spiral form is projected on the upper end of the wash shaft.
    Type: Application
    Filed: May 15, 2003
    Publication date: July 1, 2004
    Applicant: LG Electronics Inc.,
    Inventor: Kyeong Hwan Kim
  • Publication number: 20040111809
    Abstract: A combination rotating/tipping mechanism for an agitator arranged in an inner tub of a washing machine includes a drive member, a tipping member fixedly mounted to the agitator and pivotally mounted to the drive member, and a pivot link interconnecting the tipping member and the inner tub of the machine. In operation, rotation of the drive member imparts an oscillating/rotating motion to the tipping member about a rotational axis. Simultaneously, the pivot link is caused to pivot about a pivotal axis, thereby restricting the movement of the tipping member and causing the tipping member to pivot about another pivotal axis.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 17, 2004
    Applicant: Maytag Corporation
    Inventor: Keith E. Kropf
  • Publication number: 20040111808
    Abstract: A tipping mechanism for a vertical axis washing machine includes an agitator, a drive member, a tipping member and a stationary pivot member. The pivot member preferably takes the form of a ball which is received in a socket defined by the tipping member. In a preferred form of the invention, the pivot member is provided with at least one guide member which is received in an arcuate channel, including both horizontal and vertical components, defined by the tipping member. In operation, the drive member causes the tipping member to rotate, while the arrangement of the guide member in the arcuate channel forces the tipping member to shift in various planes. This movement imparts a combination rotating and tipping motion to the agitator.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 17, 2004
    Applicant: Maytag Corporation
    Inventor: Keith E. Kropf
  • Publication number: 20040103695
    Abstract: Disclosed is an outer rotor type motor of a washing machine, in which a rotor is more simply installed. The present invention includes a stator having an outer circumference on which a coil is wound, a rotor provided to leave a predetermined interval from an outside of the stator, the rotor rotating when a current is applied to the coil, and a frame having a fixing means for fixing the rotor wherein the fixing means is built in one body of an inner circumference of the frame.
    Type: Application
    Filed: November 26, 2003
    Publication date: June 3, 2004
    Inventor: Min Kyu Lim
  • Publication number: 20040031294
    Abstract: A washing machine capable of minimizing tangle and damage of the laundry is disclosed. The washing machine includes: a wash shaft installed perpendicularly at a lower center of an inner tub, and rotated by a rotational force transferred from a motor; a wash plate orbiting about a rotational center of the wash shaft to form a stream of water; and a movement converting unit for converting a rotational movement of the wash shaft to a orbiting movement of the wash plate.
    Type: Application
    Filed: September 16, 2002
    Publication date: February 19, 2004
    Applicant: LG Electronics Inc.
    Inventors: Hee Tae Lim, Gwan Ryong Park, Jae Won Chang, Kyeong Hwan Kim
  • Publication number: 20040016267
    Abstract: An agitator assembly includes an agitator body and an auger body mounted on the upper end of the agitator body. There are at least three separate helical flighting segments on the auger body. Bearings are provided at the upper end of the auger body and at the lower end of the auger body. At least one of the bearings limits both radial and axial movement of the auger relative to the agitator whereas the other of the bearings limits only radial movement of the auger relative to the body. Inlet openings are provided adjacent the lower surfaces of the auger flightings permit fluid to enter the interior of the auger barrel. An elastomeric ring is provided for attaching a fabric softener dispenser to the agitator assembly and for permitting grasping and removal of the dispenser.
    Type: Application
    Filed: July 23, 2002
    Publication date: January 29, 2004
    Inventors: Douglas S. Clark, Jon D. Strait, Vicki A. Rogers, Inho Andy Shin, Lisa Hood
  • Publication number: 20040016061
    Abstract: An apparatus, method and system of wash action control for an automatic washing machine. A manually operable user interface allows selection from between a plurality of discrete agitation speed selections which comprise at least a continuous speed agitation mode for a given agitation period during a wash cycle and an intermittent speed agitation mode for at least a part of a given agitation period. The intermittent speed agitation mode automatically varies agitation speed between at least two sub-periods of the given agitation period. The variation in agitation speed can be between a faster and a slower speed or a certain speed and no agitation.
    Type: Application
    Filed: July 23, 2002
    Publication date: January 29, 2004
    Inventors: John F. Broker, Jordan S. Bruntz, Donald E. Erickson, Scott E. Griffith, Douglas A. Ochsner, Gary T. Ostrander, Evan R. Vande Haar
  • Publication number: 20030221265
    Abstract: Device for controlling a motor in a washing machine and a method for controlling a process of a washing machine by using the same, the device including a motor, a power source part for supplying a voltage to the motor, a plurality of torque varying parts parallel to each other and electrically connected to the motor for varying a rotation torque of the motor, a plurality of switching part connected to the torque varying parts respectively and electrically connected to the power source part, a driving part for switching the switching parts, and a controlling part for controlling the driving part so as to vary the rotation torque of the motor according to a mode of user's selection.
    Type: Application
    Filed: March 19, 2003
    Publication date: December 4, 2003
    Applicant: LG Electronics Inc.
    Inventors: Bo Young Chang, Hee Tae Lim, Byung Keol Choi, Seung Chul Park, Dong Won Kim
  • Publication number: 20030208855
    Abstract: Methods and apparatuses consistent with the present invention provide for improved clothes rollover in automatic washer cycles using time-varying rotor oscillations. An automatic washer has a wash chamber with a central axis and a rotor being rotatable about the central axis. Items are loaded into the wash chamber. Wash liquid is supplied into the wash chamber. The rotor is oscillated about the central axis by time-varying oscillations.
    Type: Application
    Filed: May 9, 2002
    Publication date: November 13, 2003
    Inventors: K. David McAllister, Carrie Ann Dickinson, Duane M. Kobos
  • Publication number: 20030200774
    Abstract: A pulsator includes a metallic upper pulsator having an inlet at a center of the pulsator and upwardly protruding upper washing ribs radially around the inlet and a synthetic resin lower pulsator having upwardly protruding lower washing ribs and contacting a lower surface of the upper washing ribs, a guidance surface spaced apart from the lower surface of the upper pulsator and defining a flow passage for channeling water introduced through the inlet, and an outlet at an end of the guidance surface discharging water channeled through the flow passage. The lower pulsator rotates with and is fixed to a driving shaft of a washing machine. A pulsator includes a synthetic resin pulsator body having a washing rib and a metal plating layer on an outer surface of the pulsator body includes the inlet. The outlet and the flow passage are provided in the pulsator body.
    Type: Application
    Filed: April 16, 2003
    Publication date: October 30, 2003
    Inventors: Jong Ho Kim, Jong Sun Yoon
  • Publication number: 20030154749
    Abstract: A washing machine includes a wobbling device having a rotary blade. The wobbling device causes a wobbling action of a washboard without rotating the washboard during a washing mode operation, and rotates the rotary blade in one direction to allow a sufficient amount of wash water to flow upward through an ascending water current guide and fall from an upper portion of a spin-drying tub onto clothes contained in the spin-drying tub, thus effectively washing the clothes. The washboard is installed at a lower portion in the spin-drying tub such that it wobbles upward and downward. The rotary blade is installed under the washboard, and is rotated in one direction by torque of a washing shaft. The rotary blade is fitted over a boss which couples a vertical rotary shaft of the wobbling device to the washing shaft, and is rotated by the torque of the washing shaft. The water current guide extends along a sidewall of the spin-drying tub from a lower end to an upper end of the spin-drying tub.
    Type: Application
    Filed: July 18, 2002
    Publication date: August 21, 2003
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Hyung-Kyoon Kim, Seung-Ho Lee, Sang-Yeon Pyo, Chan-Woo Park, Myung-Gyu Lee, Hyun-Sook Kim
  • Patent number: 6604389
    Abstract: A wobble joint for use in automatic washing appliances and the like includes inner, outer and intermediate joint members which have nesting curved sliding surfaces that enable the joint members to pivot relative to one another. The joint has motion limiting features acting between the intermediate joint member and each of the inner and outer joint members to restrict relative movement between the outer joint member and the intermediate joint member to pivotal movement within a first plane and to restrict relative movement of the intermediate member and inner joint member to pivotal movement within a second plane transverse to the first plane. The motion limiting features comprise first and second arcuate grooves extending parallel to the first and second planes and retainers captured in the grooves and relatively moveable therealong.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: August 12, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: William Paul Skvarla, Leland Nels Olgren
  • Publication number: 20030051514
    Abstract: The present invention relates to a washing machine, which is capable of forcibly circulating water from the lower portion of a washing tub to the upper portion of the washing tub, thereby enabling circulation washing of the laundry. The washing machine includes a casing, a washing tub, an arrangement for holding the washing tub in the casing and an arrangement for forcibly circulating washing water. The washing tub is mounted in the casing. The holding arrangement serves to allow the washing tub to be positioned to be inclined at a predetermined angle with regard to a vertical axis. The water circulating arrangement forcibly circulates washing water from a bottom of the washing tub to a top of the washing tub and is extended from the bottom of the washing tub to the top of the washing tub.
    Type: Application
    Filed: September 5, 2002
    Publication date: March 20, 2003
    Applicant: LG Electronics Inc.
    Inventors: Dong Won Kim, Young Hwan Park, Oh Hoon Kwon, Kyung Hwan Kim, Tae Hee Lee, Si Moon Jeon
  • Patent number: 6516485
    Abstract: A washing machine having a variable speed motor. The washing machine has a basket for holding articles to be washed and has a first axis of rotation. A basket drive shaft connected to the basket drives the basket. An agitator disposed in the basket along the first axis of rotation agitates the article in the basket. An agitator drive shaft connected to the agitator drives the agitator. A variable speed motor, having a second axis of rotation which is not coincident with the first axis of rotation, drives the basket drive shaft and the agitator drive shaft. A coupler couples motion of the variable speed motor to the agitator drive shaft and basket drive shaft.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: February 11, 2003
    Assignee: General Electric Company
    Inventors: Sudhir Dattatraya Savkar, Richard Leland Butsch, John Marshall Hooker, Richard Edward Hornung, Walter Whipple, III
  • Patent number: 6481249
    Abstract: A thrust bearing assembly for absorbing forces on an input shaft of a washing machine is described. In one embodiment, the thrust bearing assembly is located at an upper end of the input shaft just below a pinion gear coupled to the shaft. The thrust bearing assembly includes a cage and bearing assembly positioned between washers. The thrust bearing assembly is supported on a bronze flange bearing having a bore, and the input shaft extends through the bore. The flange bearing is supported by the transmission housing, and a lubrication reservoir is formed by the transmission housing. The reservoir typically is filled with a lubricant. In operation, when the machine operates in the spin cycle, axial forces are transferred through an actuator cam, a pulley hub, and the shaft to the thrust bearing assembly. The trust bearing assembly cooperates with the transmission housing to absorb the downward axial forces on shaft.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: November 19, 2002
    Assignee: General Electric Company
    Inventors: Stephen Bernard Froelicher, David Edward Norton
  • Publication number: 20020157190
    Abstract: Handling of a washing apparatus is facilitated, and the before- and after-washing operation ability of the washing apparatus may be improved. The washing apparatus comprises a driving side base (7) and a washing tank (1). The washing tank mounted on the driving side base can be separated from the driving side base. The driving side base is furnished with a rotary drive unit. An opening is formed at the upper portion of the washing tank. The washing tank has a stirring blade (2), shaft (5), and first transfer joint (6). The stirring blade is rotatably installed in the washing tank, and serves to stir the laundry such as clothes. The shaft is disposed piercing through the bottom of the washing tank. The stirring blade is fitted on the shaft. A first transfer joint for the transfer of a rotational drive is fitted on the shaft positioned outside the washing tank. The driving side base has a second transfer joint 10 disposed at top of the driving side base.
    Type: Application
    Filed: November 13, 2001
    Publication date: October 31, 2002
    Inventors: Shunji Imai, Tadashi Asami
  • Patent number: 6430971
    Abstract: A wash basket alignment system for an automatic washing machine having a wash basket with a drive block partially inserted through a central aperture in the bottom wall of the wash plate. A spin drive tube extends longitudinally through the central aperture in the drive block and through the wash plate bottom wall. A hold down nut is threadingly engaged to the drive block from the inside chamber of the wash basket to position the wash basket within the wash tub. Concentric alignment of the wash basket along a central longitudinal axis decreases basket runout. Therefore, the drive block has a spherical outside surface where it abuts the conical shaped outer surface of the wash basket. The radius of the spherical outside surface intersects the central axis at a point. This configuration facilitates the sliding or moving of this juncture from a first position out of concentricity to a second position that is concentric about the longitudinal axis.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: August 13, 2002
    Assignee: Whirlpool Corporation
    Inventors: Ali Kaylan, James R. Ollis, Eric K. Farrington
  • Patent number: 6401500
    Abstract: A thrust bearing assembly for absorbing forces on an input shaft of a washing machine is described. In one embodiment, the thrust bearing assembly is located at an upper end of the input shaft just below a pinion gear coupled to the shaft. The thrust bearing assembly includes a cage and bearing assembly positioned between washers. The thrust bearing assembly is supported on a bronze flange bearing having a bore, and the input shaft extends through the bore. The flange bearing is supported by the transmission housing, and a lubrication reservoir is formed by the transmission housing. The reservoir typically is filled with a lubricant. In operation, when the machine operates in the spin cycle, axial forces are transferred through an actuator cam, a pulley hub, and the shaft to the thrust bearing assembly. The thrust bearing assembly cooperates with the transmission housing to absorb the downward axial forces on shaft.
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: June 11, 2002
    Assignee: General Electric Company
    Inventors: Stephen Bernard Froelicher, David Edward Norton
  • Patent number: 6354115
    Abstract: A two-component seal for the spin tub of a washing machine. The two-component seal is disposed about the tub opening and a metal shroud seal to prevent water in the washer from entering a motor and bearing space. The top seal includes a metal case with multiple sealing surfaces. The presence of multiple sealing surfaces provides a sealing force against the shaft shroud seal to seal during operation and compensate for seal wear over time, extending the seal life. The top seal has a stiffener made of metal. A resilient elastomeric cover encloses the stiffener, except for top and bottom tabs. A bottom tab prevents slipping between the tub seal and bottom assembly. The bottom tabs additionally have a lip which engages the shroud seal made from materials which allow sealing lips to seal on a softer metal shaft. The bottom seal also has a resilient metallic stiffener enclosed by a resilient bottom cover. The bottom seal further has a vertical wall and a horizontal flange.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: March 12, 2002
    Assignee: Clark Seals, Ltd.
    Inventor: Henry W. Zahn
  • Patent number: 6334342
    Abstract: A washing machine having horizontally moving washing plates is disclosed. The washing machine comprises an inner tub for receiving a detergent water and a laundry; a pulsator for agitating the detergent water which is rotatably mounted in an interior of the inner tub; a driving unit for rotating in forward and reverse directions the pulsator which is disposed on an exterior of the inner tub, the driving unit having a washing shaft which is connected to the pulsator; and a washing means for bumping against the laundry which is disposed on the pulsator and is horizontally reciprocated by the driving unit to wash the laundry. Therefore, washing efficiency is increased.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: January 1, 2002
    Assignee: Daewoo Electronics Co., Ltd.
    Inventor: In-Su Cho
  • Patent number: 6332343
    Abstract: An automatic washing machine includes a water tub having a bottom with a through hole, a rotating tub rotatably mounted in the water tub, an electric motor including a rotor and mounted on an underside of the water tub, a hollow tub shaft rotatably mounted on the bottom of the water tub so as to extend through the hole of the water tub, the tub shaft having an upper end connected to the rotating tub and a lower end with an outer circumferential face formed with a sliding guide, a boss mounted on a central portion of the rotor so as to be located below the tub shaft, the boss including an upper portion formed with an annular connecting portion having a diameter larger than a diameter of the tub shaft, an agitator shaft rotatably mounted inside the tub shaft and having an upper end connected to the agitator and a lower end connected to the boss, a cylindrical clutch having an inner circumferential face formed with an annular engaging portion engaging the sliding guide, the clutch being fitted with the lower end
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: December 25, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tadaaki Koketsu, Tetsuyuki Kono, Hiroyuki Noguchi
  • Patent number: 6269822
    Abstract: In a device for the wet treatment of substrates (3) in a container (1), containing a treatment fluid (2), whereby the substrates (3) are introduced into the container (1) with a substrate carrier (5), an optimal alignment and centering of the substrates (3) will result within the container (1) upon lifting from the container (1) with the aid of a substrate receiving device (4) provided within the container (1).
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: August 7, 2001
    Assignee: Steag Microtech GmbH
    Inventors: Jurgen Funkhanel, Dieter Meister, Martin Weber, Felix Wehrle
  • Patent number: 6244079
    Abstract: A brake assembly of a washing machine is comprised of a brake drum rotating together with a spin basket, a brake band disposed on an outer side of the brake drum, and a brake lever for driving the brake band. A brake spring elastically pushes the brake lever so that the brake band is contacted with the brake drum. A brake link is installed on the brake lever so as to be capable of pivoting. A link spring elastically pushes the brake link in a pivoting direction thereof. A bolt is screwed to the brake lever. The screwed end of the bolt is contacted with the brake link against an elastic force of the link spring, and the relative pivoting position of the brake link with respect to the brake lever is adjusted according to a screwed position of the bolt. Thus, the error of the braking operation caused by the assembly tolerance of the brake assembly or the abrasion of the brake band can be amended.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: June 12, 2001
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Sang Chul Bae
  • Patent number: 6244078
    Abstract: Bearing fretting conditions are eliminated in washing machines by providing a drive system in which the bearings are not loaded during the spin mode. The drive system includes an input shaft and first and second hubs rotatively mounted about the input shaft. The second hub is movable along the input shaft between a first position adjacent to the first hub and a second position displaced from the first hub. The drive system spins the washing machine's basket when the second hub is in its first position and oscillates the agitator when the second hub is in its second position. A brake disk is mounted to the second hub for movement therewith, and a brake surface is fixedly mounted to the washing machine adjacent to the brake disk so that the brake disk contacts the brake surface when the second hub is in its second position. Separation of the two hubs is accomplished by ball bearings which are unloaded when the second hub is in its first position.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: June 12, 2001
    Assignee: General Electric Company
    Inventors: Robert Alan Thompson, Sudhir Dattatraya Savkar
  • Patent number: 6220063
    Abstract: A washing machine includes a cabinet with an opening. A wash basket is mounted within the cabinet for rotation about a wash basket axis, and includes an access opening through which clothes may be loaded and unloaded. At least one agitator is mounted within the basket for rotation about an agitator axis which is at an angle different from the angle of the wash basket axis. A drive mechanism bathed by washing fluid interconnects a drive motor, the wash basket, and the agitator for rotating the agitator about its rotational axis.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: April 24, 2001
    Assignee: Maytag Corporation
    Inventors: Daniel F. Wunderlich, John F. Broker, Keith E. Kropf, John E. Thomas
  • Patent number: 6202451
    Abstract: A power transmission apparatus of a washing machine, the apparatus employing a wash/spin-dry tub inside and outer tub and an agitating member centrally disposed inside the wash/spin-dry tub for agitating laundry, wherein the apparatus comprises upper and lower cover flanges coupled to a bottom surface of the outer tub for accommodating a driving source underneath the outer tub to generate a driving force and for supporting the driving source, a motor shaft disposed at an inner circumference of a rotor at the driving source to be integrally rotated therewith, a sealing member for sealing a space between the outer tub and the motor shaft the present water from leaking out of the outer tub and for causing the motor shaft to rotate independently from the outer tub, and a ball bearing having an inner ring thereof push-fitted from under the sealing member into an outer circumference of the motor shaft while an outer ring thereof is push-fitted into an inner circumference of the upper cover flange, and a power trans
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: March 20, 2001
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Choul-Woo Park, Sang-Chul Bae
  • Patent number: 6189171
    Abstract: A washing machine having a variable speed motor. The washing machine has a basket for holding articles to be washed and has a first axis of rotation. A basket drive shaft connected to the basket drives the basket. An agitator disposed in the basket along the first axis of rotation agitates the article in the basket. An agitator drive shaft connected to the agitator drives the agitator. A variable speed motor, having a second axis of rotation which is not coincident with the first axis of rotation, drives the basket drive shaft and the agitator drive shaft. A coupler couples motion of the variable speed motor to the agitator drive shaft and basket drive shaft.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: February 20, 2001
    Assignee: General Electric Company
    Inventors: Sudhir Dattatraya Savkar, Richard Leland Butsch, John Marshall Hooker, Richard Edward Hornung, Walter Whipple, III
  • Patent number: 6082152
    Abstract: A washing machine pumps a washing liquid towards an upper portion of a spin tub while a washing cycle is being executed. The washing machine has a pumping unit disposed at an underside of an outer tub so as to pump the washing liquid from a bottom wall of the outer tub to upper portions of the spin tub and the outer tub. The pumping unit has a receptacle which is fixed to the underside of the outer tub, a disc member which is reciprocated in upward and downward directions within the receptacle, a wire having a first end fixed to a center of an underside of the disc member, a synchronous motor connected to a second end of the wire for pulling the disc member downward, and a compression spring installed in the receptacle for upwardly biasing the disc member.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: July 4, 2000
    Assignee: Daewoo Electronics Co., Ltd.
    Inventor: Jang-Yun Im
  • Patent number: 6006553
    Abstract: A clothes washing machine has a motor which includes a stator, and a rotor disposed around the stator. The rotor includes a disk-shaped plate having radial blades disposed on an upper surface thereof. The blades are situated beneath the stator and generate a flow of turbulent cooling air along the stator in response to rotation of the rotor.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: December 28, 1999
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min-Soo Lee, Hwan-Young Choi
  • Patent number: 5946948
    Abstract: In a clothes washer having a main pulsator 4 which is rotatably disposed in a clothes basket 3, the driving force transmitting apparatus 17 is disposed in a chamber 12 partitioned by the horizonal plate. The driving force of the motor 5 transmits simultaneously and directly to each main pulsator and sub-pulsator which constitutes a series of bevel gears.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: September 7, 1999
    Assignee: Daewoo Electronics, Co., Ltd.
    Inventor: In-Su Cho
  • Patent number: 5931029
    Abstract: A clothes washing machine includes a spin basket and a water-agitating mechanism mounted at the bottom thereof. The water-agitating mechanism includes an agitator having radial blades, and a wash baton projecting upwardly from a center region of the agitator. The agitator and wash baton are rotatable relative to one another about a common vertical axis. A drive mechanism oscillates the agitator and wash baton relative to one another such that the agitator and wash baton rotate in opposite directions for maximizing the agitation of the water.
    Type: Grant
    Filed: June 4, 1997
    Date of Patent: August 3, 1999
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Sung-Min Kim
  • Patent number: 5921114
    Abstract: A pulsator for a washing machine installed in a washing tub is provided. The present pulsator for a washing machine comprises: a main body installed rotatably on a bottom of the washing tub with a vertical axis, and having a fan chamber and a upper surface formed with at least a spout outlet which is open upwardly and is in a flow communication with the fan chamber; a spout fan having a fan shaft with an axis parallel with the vertical axis of the main body and a plurality of fan blades extending radially from the fan shaft, the spout fan being received in the fan chamber for rotation relative to the main body to eject washing water upwards through the spout outlet; a bearing means for rotatably supporting the fan shaft in a radial direction as well as an axial direction; and means for rotating the spout fan. Accordingly the spout fan can be supported by a simple supporting structure.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: July 13, 1999
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Byung Don Jung
  • Patent number: 5918486
    Abstract: A washing machine having an apparatus for generating a turbulent flow. The washing machine has a cabinet, an outer tub installed in the cabinet to receive a washing water, a spin tub mounted in the outer tub to receive articles, an apparatus installed at a lower portion of the spin tub to upwardly impel the washing water, a pulsator to guide the washing water impelled by the apparatus into a center portion of the spin tub and to generate a swirling flow in the spin tub, a motor and a power transmission to drive the apparatus and pulsator. The apparatus has a porous cap member to allow the washing water to flow thereinto and an impeller to upwardly impel the washing water flown thereinto. The washing machine can impel the washing water toward an upper portion of the spin tub while a washing operation is being carried out so that the apparatus generates a complicated turbulent flow in the spin tub, thereby improving a washing efficiency.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: July 6, 1999
    Assignee: Daewoo Electronics Co., Ltd.
    Inventor: Kwan-Choul Park
  • Patent number: 5916275
    Abstract: A pulsator of a washing machine for effectively washing small-sized or light weight articles. The pulsator has a rotating disc, and a cylindrical member having a chamber for receiving an article to be washed and integrally formed at a center of an upper surface of the rotating disc. The cylindrical member extends upward by a predetermined length. The pulsator has a lid for preventing the article received in the chamber from coming out of the chamber, and a plurality of vanes for generating a swirl shaped liquid flow. The vanes are regularly installed around an outer wall of the cylindrical member. The cylindrical member is formed at its outer wall with a plurality of holes for introducing/discharging a washing water into/from the chamber. The articles placed in the chamber of the pulsator are subjected to a relatively small centrifugal force, so the small-sized articles can be prevented from tangling with each other and prevented from being damaged.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: June 29, 1999
    Assignee: Daewoo Electronics Co., Ltd.
    Inventor: Ui-Shik Chung
  • Patent number: 5865046
    Abstract: In a clothes basket having a pulsator apparatus, the pulsator apparatus comprises a first pulsator 20 disposed above a bottom portion of a clothes basket 2 and rotated by a motor 4, and a driving gear wheel 42 provided rotatably in the first pulsator 20. Like the rotation of the driving gear wheel 42, the second pulsator 30 meshed with the gear wheel 42 rotates. Further, a ring shape idle gear 46 for guiding the rotation of the driving gear wheel is provided on the bottom portion of the clothes basket 2.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: February 2, 1999
    Assignee: Daewoo Electronics Co., Ltd.
    Inventors: Jae-Hyun Na, In-Su Cho