Tubs Patents (Class 68/232)
  • Publication number: 20150020553
    Abstract: A laundry treating appliance for treating laundry according to a cycle of operation, includes a container rotatable about a rotational axis and having a peripheral wall, a plurality of arranged embossments, and a plurality of arranged holes, wherein the plurality of embossments may be oriented at an angle to both of the rotational axis and the plurality of arranged holes.
    Type: Application
    Filed: July 22, 2013
    Publication date: January 22, 2015
    Inventors: GREGG P. FITZGERALD, JOHN M. HUNNELL, JOHN W. MCCONNELL, STEPHEN D. OSTDIEK, DEAN L. TIETZ
  • Publication number: 20140208810
    Abstract: A drum for a laundry washing machine (W) has side walls (50, 51, 52, 53; 110, 111, 112, 113) defining a laundry receiving space (53, 113). At least one of the side walls is circular and comprises a plurality of openings (41, 61) for the passage of a liquid therethrough. The drum comprises at least a circular member (55, 65, 115) circumferentially associated to an inner portion (50a, 110a) of the circular side wall. The circular member defines a chamber (59, 119) for receiving the liquid from at least one receiving opening (43, 163) of the openings and comprises at least one aperture (66, 126, 266) facing the laundry receiving space suitable to modify the flow of the liquid from the at least one receiving opening to the laundry receiving space.
    Type: Application
    Filed: July 16, 2012
    Publication date: July 31, 2014
    Applicant: ELECTROLUX HOME PRODUCTS CORPORATION N.V.
    Inventors: Andrea Zattin, Calum Armstrong, Davide Bignu', Elisa Stabon, Levente Szabo, Maurizio Ugel, Monica Celotto, Nicola Reid
  • Publication number: 20140102150
    Abstract: A wall-mounted drum type washing machine includes a rear panel forming a rear surface of a cabinet, comprising a water supply device installed to supply wash water and a driving unit to provide power for a washing operation, mounted on a wall surface; a tub in the cabinet to contain wash water, integrated with the rear panel, and having a rotatable drum therein; a box unit connected to a cover unit having a door thereon, forming an outer wall of the cabinet, and coupled to the rear panel and surrounding the tub; a water supply device supplying wash water into the tub through a top surface of the cabinet; and a drain device discharging wash water from the tub to the bottom of the box unit.
    Type: Application
    Filed: December 6, 2012
    Publication date: April 17, 2014
    Inventors: Ui Kun Hwang, Ju Dong Lee
  • Patent number: 8677789
    Abstract: A plastic suds tub for a washing machine includes a cylindrical casing, an end face wall closing off the casing with a hollow-cylindrical, solid bearing mount, a stabilizer on the end face wall of a more solid and higher-quality plastic than the casing, and reinforcement ribs molded into the stabilizer or end face wall. The reinforcement ribs being radially-aligned from the bearing mount and branching along their radial extent.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: March 25, 2014
    Assignee: BSH Bosch und Siemens Hausgerate GmbH
    Inventors: Ismael Gracia Bobed, Christian Quandt, Holger Reichner, Wilfried Wildung
  • Publication number: 20130213096
    Abstract: A wash tub for a washing machine appliance is provided. The wash tub includes one or more features for controlling an overflow condition in which fluid is flowing over the side of the wash tub. These features can be used to help control the flow of fluid and/or direct the same away from the machine.
    Type: Application
    Filed: February 20, 2012
    Publication date: August 22, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: David Scott Dunn, Timothy T. Hertrick
  • Patent number: 8511117
    Abstract: A plastic washing-machine tub with a front wall, a rear wall and a cylindrical wall enclosing an inner tub compartment, which comprises: two tub shells made from injection-molded plastic that can be connected together by means of an assembly plane in a tub closure direction, the first tub shell comprising the front wall and the second tub shell comprising the rear wall; an integral bulge emerging from the cylindrical wall and defining a cavity connected to the inner tub compartment, the bulge having at least one inlet and/or outlet opening. The assembly plane divides the bulge into two parts, a first bulge part being arranged in the first tub shell and a second bulge part in the second tub shell.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: August 20, 2013
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Noelia Borque Marquina, Miguel Angel Gomez Caudevilla, Ismael Garcia Bobed, Alberto MaƱas Molina, Eduardo Recio Ferrer
  • Patent number: 8485002
    Abstract: A plastic tub for a washing machine includes a cylindrical casing; and an end face wall sealing the cylindrical casing. The end face including a bearing mount for a shaft of a laundry drum and radially-aligned reinforcing ribs molded into the end face wall. The reinforcing ribs begin at the bearing mount and branch in a Y-shape along their radial extent.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: July 16, 2013
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Christian Quandt, Holger Reichner
  • Publication number: 20130061401
    Abstract: A solvent wash employing a polar washing solvent is employed to effectively remove the sizing agent on a woven glass cloth, while retaining the tensile strength of the woven glass cloth. Loss of tensile strength of the woven glass cloth due to removal of a sizing agent from the woven glass cloth is compensated by simultaneous or subsequent deposition of a coupling agent on surfaces from which the sizing agent is removed. The concurrent removal of the sizing agent and deposition of the coupling agent provides an effective removal of the sizing agent while maintaining sufficient tensile strength to structurally support the woven glass cloth. Further, integration of the removal of the sizing agent and the simultaneous deposition of the coupling agent in the washing solvent in a same processing step can provide a cost-effective manufacturing method for forming a finished woven glass cloth.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 14, 2013
    Applicants: PARK ELECTROCHEMICAL CORP., INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Dylan J. Boday, Michael Haag, Ruediger Kellmann, Joseph Kuczynski, Markus Schmidt, Johannes Windeln, Silvio Bertling
  • Publication number: 20130025328
    Abstract: An appliance comprises a wash tub and a wash basket in which clothes to be washed are positioned. In one embodiment, the wash basket has a first region that is permeable to the washing fluid and a second region in which washing fluid is retained. The wash basket comprises a first wall that forms an outer shell and in which is disposed a second wall that tapers towards the center axis from the first region to the bottom of the outer shell. The second wall forms an inner or first compartment and an outer or second compartment, which is adjacent to and in flow connection with the first compartment proximate the first region. When implemented in an appliance such as a washing machine, the second wall is configured so that the washing fluid moves from the second region to the first region in response to rotation of the wash basket.
    Type: Application
    Filed: July 27, 2011
    Publication date: January 31, 2013
    Inventors: David Scott DUNN, Jerrod Aaron Kappler, Austin Vinoth Sargunum, Mohan Rao Ponnaganti, Manikandan Balasubramaniam
  • Publication number: 20120304703
    Abstract: A washing machine having an improved structure which increases washing capacity without increasing the size of the washing machine. The washing machine includes a cabinet including an outer part and a cylindrical inner part connected to the outer part, a spin basket rotatably disposed in the inner part and including a bottom and a side wall extending from the bottom, a pulsator rotatably disposed in the spin basket, a motor provided under the spin basket, a clutch to selectively transmit power of the motor to the spin basket or the pulsator, a base plate to fix the clutch and the motor, and suspension members connecting the base plate to the upper portion of the cabinet. Wash water is stored within the spin basket and is not stored outside the spin basket during a washing cycle.
    Type: Application
    Filed: May 30, 2012
    Publication date: December 6, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyun Mook KIM, Doo Pil Kim, Je Hong Min, Kalo Jin Jun, Yong Jong Park, Jae Ryong Park, Dong Pil Seo, Sang Hyeok Lee, In Cheol Jang, Sang Yeon Pyo, Jung Hee Lee, Ji Hoon Choi, Seung Oh Kim
  • Publication number: 20120304705
    Abstract: A cylindrical rotating tub body and a drum-type washing machine having the same, in which the rotating tub body is formed by rolling a plate such that both ends of the plate are connected to each other. The washing machine includes a cylindrical rotating tub body and a plurality of lifters, which are spaced apart from each other on an inner peripheral surface of the rotating tub body. The rotating tub body includes lifter installation sections on which a plurality of lifters are installed, concave-convex sections having a plurality of concave-convex parts and being installed between the lifter installation sections, and reinforcement sections to reinforce the strength of the lifter installation sections. The lifter installation sections having a strength lower than that of the concave-convex sections are reinforced due to the reinforcement sections, so that the lifter installation sections are prevented from being extremely being deformed during the rolling process.
    Type: Application
    Filed: August 8, 2012
    Publication date: December 6, 2012
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Haeng Maan JEONG, Byoung Mock KAHM, Hong Yeol LEE
  • Patent number: 8011210
    Abstract: The invention relates to washing drum shell formed by a final sheet metal strip which is coiled in the form of a cylinder and whose ends are welded to one another. The longitudinal sides thereof are connected to a bottom disk by a high-flange joint provided with transversal embossments. The high flange joint is sufficiently stable even when the carriers of the washing drum are drawn into the shell. The drawn-in carriers are connected by at least one fold to openings shaped in at least one bottom disk and the transversal embossments of the high flange joint are shaped in an area which is arranged directly near a connection between the drawn-in carriers and the bottom disk.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: September 6, 2011
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Axel Heubner, Alfred Nitsche, Wilfried Wildung
  • Publication number: 20110056086
    Abstract: Drum for a washer and a dryer including a cylindrical metal body part, reduced parts at opposite end parts of the body part, each having a diameter smaller than a diameter of the body part, and bent parts each having a folded edge of the reduced part, thereby providing a drum that can prevent occurrence of vibration and noise.
    Type: Application
    Filed: October 1, 2010
    Publication date: March 10, 2011
    Inventors: Soon Jo Lee, In Hee Han
  • Publication number: 20110041565
    Abstract: Disclosed herein is a washing machine in which a balancer is directly mounted on a body of an inner tub without a front surface part of the inner tub. The washing machine includes an outer tub to store water, a body formed in a cylindrical shape provided with an opening at one surface thereof and provided in the outer tub, and a balancer connected to an inner diameter part at the opening of the body to reduce unbalance of the body generated during rotation of the body and to reinforce the body.
    Type: Application
    Filed: August 20, 2010
    Publication date: February 24, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong Kwon KIM, Kyu Chai LEE, Hong Seok KO, Sang Up LEE
  • Publication number: 20110041563
    Abstract: Disclosed herein are a washing machine which minimizes the number of dampers and effectively prevents vibration, and an outer tub supporting structure thereof. The washing machine includes a housing forming an external appearance of the washing machine, an outer tub provided in the housing to store water, an inner tub rotatably mounted within the outer tub, a driving device including a rotary shaft passing through the outer tub and connected to the inner tub to rotate the inner tub, a bearing surrounding the rotary shaft and fixed to the outer tub to prevent rotation of the outer tub during rotation of the rotary shaft, a bearing housing formed on the outer tub such that the bearing is mounted within the bearing housing, and a damping unit provided with a first end supporting the bearing housing and a second end fixed to the washing machine housing to reduce vibration of the outer tub.
    Type: Application
    Filed: August 20, 2010
    Publication date: February 24, 2011
    Applicant: SAMSUNG ELECTROINCS CO., LTD.
    Inventors: Yong Kwon KIM, Hong Seok KO, Sang Up LEE
  • Publication number: 20100180644
    Abstract: A water tub for a washing machine, manufactured by injection molding under the condition that a bearing housing to install bearings is inserted into the water tub and including support holes to allow the bearing housing to be supported by a water tub manufacturing mold unit, and the water tub manufacturing mold unit including support protrusions to support the bearing housing through the support holes. The support holes and the support protrusions prevent the bearing housing from moving in the injection molding process of the water tub, into which the bearing housing is inserted.
    Type: Application
    Filed: January 8, 2010
    Publication date: July 22, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Jeong Ho Cha
  • Patent number: 7752872
    Abstract: A loading basket for a washing machine includes a rear wall (8), a front wall (9) and a side wall (7) extending about a longitudinal axis (X), and one or more dragging blades (12) that are arranged on the side wall (7) and projecting to the inside of the basket. The side wall (7) includes a substantially cylindrical and/or truncated cone-shaped wall portion (13) with one or more approximately plane interruption areas (14) extending from a rear area of the side wall (7) close to the rear wall (8) to the vicinity of the front wall (9). The dragging blades (12) are connected to the interruption areas (14).
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: July 13, 2010
    Assignee: Candy S.p.A.
    Inventor: Silvano Fumagalli
  • Publication number: 20100162774
    Abstract: The present invention relates to a washing appliance and more specifically a laundry appliance. The present invention relates to a drum, (1) for a washing machine that allows increased capacity without the need to increase the size of the overall appliance. The drum comprises a receptacle having a solid outer wall with at least one aperture and means (19) for guiding liquid purged from laundry toward the aperture such that the liquid is expelled.
    Type: Application
    Filed: November 24, 2006
    Publication date: July 1, 2010
    Applicant: ANDREW REASON LIMITED
    Inventors: Andrew Reason, Mario Rabaiotti, James Osgood
  • Patent number: 7640771
    Abstract: A suds container for a washing machine includes a cylindrical vessel surrounding a drum of the washing machine, the cylindrical vessel including a cylindrical wall and a front wall. A metallic hub for a drive shaft for the drum is integrated into a plastic compound of the front wall. Reinforcing plastic fiber strands are integrated into the plastic compound. The fiber strands extend from the hub outward toward the outer circumference of the front wall.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: January 5, 2010
    Assignee: Miele & Cie. KG
    Inventors: Benedikt Fechtel, Matthias Hollenhorst, Andreas Kratzsch, Antje Nieder
  • Publication number: 20090178443
    Abstract: A washing machine paddle includes a plurality of intake openings for collecting liquid at the bottom and rear of a drum of a front loading washing machine. Discharge openings are located on the paddle toward the front of the drum for discharging liquid therethrough. A baffle arrangement in the paddle directs the liquid collected from the intake openings to the discharge openings upon rotation of the drum to place the paddle into a top location. A drum arrangement and washing machine includes at least one such paddle mounted thereon.
    Type: Application
    Filed: January 11, 2008
    Publication date: July 16, 2009
    Applicant: BSH Home Appliances Corporation
    Inventors: Jaime Andia Laborda, Jonathan Murrell, Terry Smith
  • Publication number: 20080289370
    Abstract: A tub of a washing machine capable of being commonly used for motors mounted on different positions and a washing machine including the tub are disclosed. The washing machine includes a tub which includes a first motor mounting portion to mount a direct connection-type motor thereon and a second motor mounting portion to mount a direct connection-type motor thereon, a rotary drum rotatably installed in the tub, and a motor mounted on one of the first motor mounting portion and the second motor mounting portion to drive the rotary drum. The first motor mounting portion and the second motor mounting portion are integrally formed as one body with the tub when the tub is manufactured.
    Type: Application
    Filed: February 14, 2008
    Publication date: November 27, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hui Seob Byun, Tae Sung Gweon
  • Publication number: 20080264115
    Abstract: Front-loading laundry washing machines or the like comprises a cylindrical perforated strip for letting through the water flow, at least one crusher, a rear drum closing disk, and means for joining the disk to the strip in the area of the end of the crusher nearest to the disk. The joining means comprise a rear joining support, a stop opposite the joining support on the other side of the disk, and pressure means which join the stop to the rear joining support, with the disk and part of the end of the crusher lying there between. The stop is concave and its edges are at least in part in contact with the end of the crusher.
    Type: Application
    Filed: February 22, 2006
    Publication date: October 30, 2008
    Applicant: BSH Bosch und Siemens Hausgerate GmbH
    Inventor: Ismael Gracia Bobed
  • Publication number: 20030167804
    Abstract: Drum device for a home appliance having a chamber for drying or washing laundry, including a sound attenuation member fitted to an outside surface thereof, thereby effectively attenuating noise caused by impact of articles, such as buttons, zippers, clips, and the like fitted to the laundry, to the metallic drum when the laundry introduced into the chamber is lifted and dropped as the drum rotates.
    Type: Application
    Filed: March 11, 2003
    Publication date: September 11, 2003
    Inventor: Ju Han Yoon
  • Patent number: 6132354
    Abstract: A ball balancer for minimizing a dynamic unbalance of a moving part of a rotating machine such as a centrifuge is provided. The ball balancer includes a rotary balancer casing having disposed therein balls. The rotary balancer casing is mounted on the moving part coaxially with an axis of rotation thereof and has formed therein an inner side wall which is so curved that the balls are lifted away from the bottom of the balancer casing along the inner side wall by the centrifugal force and biased toward the opposite side of an unbalanced mass of the moving part when the rotational speed of the moving part exceeds a resonant speed that is a rotational speed of the moving part when matched with a natural frequency of the moving part, thereby counterbalancing the unbalanced mass of the moving part. In an alternative form, the balls include a first group having a large diameter and a second group having a small diameter. The large-diameter balls and the small-diameter balls are arranged alternately.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: October 17, 2000
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Shinki Ohtsu, Mitsuyuki Ishikawa, Masanori Yoshioka
  • Patent number: 6129768
    Abstract: According to a method and apparatus for balancing a container using a closed system fluid balance ring for high rotational speed washing machines, the transfer of fluid is pulsed, allowing for a variable overall mass transfer rate while computation of the imbalance continues. Mass transfer continues until any significant imbalance is eliminated. The quasi-constant nature of this method allows for the resulting imbalance tolerances to be significantly lower. As the imbalance decreases, the mass transfer rate is varied accordingly.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: October 10, 2000
    Assignee: Maytag Corporation
    Inventors: Troy A. Johnson, John E. Thomas
  • Patent number: 6119547
    Abstract: An automatic balancing device for rotary units or systems. The automatic balancing device includes an annular housing, and an annular outer race track disposed in the annular housing. The outer race track is concentric with and attachable to the rotary system so as to rotate with the rotary system. A number of roller bodies are disposed in the annular housing and are freely movable along the race track for dynamic and/or static contact therewith during rotation of the rotary unit or system. The outer racetrack is provided in a separate ring of a large diameter having a torus-shaped groove forming the race track and having a curved concave profile facing the center of the separate ring.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: September 19, 2000
    Assignee: Aktiebolaget SKF
    Inventors: Bo Goransson, Jonas Nilsag.ang.rd
  • Patent number: 6089053
    Abstract: A household-type washing machine or similar appliance in which the washing assembly (3) is anchored to the stationary structure (1) by one or more anchoring devices (2). Each anchoring device includes at least two elastic elements (10, 20) arranged in series. Firmly secured to each elastic element is a rigid element (15, 25) whose free end portion (15) protrudes beyond the other elastic element (20). The elastic elements (10, 20) work in this manner as compression elastic means and the elastic constant of the anchoring devices (2) readily and automatically adapts to the different conditions that happen to prevail during a washing cycle.
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: July 18, 2000
    Assignee: Electrolux Zanussi S.p.A.
    Inventor: Giovanni Colombera
  • Patent number: 6082151
    Abstract: A speed dependent response control balancing device of the present invention provides control of vibrations in a rotatable member such as a rotatable basket of a washing machine. The balancing device has two compartments including an annular ball race and a reservoir. A plurality of balls are positioned within the annular ball race and move within the ball race to counteract the imbalance of the basket. A varying amount of viscous fluid is delivered from the reservoir into the ball race depending on a rotational speed of the balancing device. Accordingly, the reaction or "quickness" of the response of the balls within the ball race changes with the rotational speed of the balancing device to provide quick response during a start-up period and slower response at high rotational speeds.
    Type: Grant
    Filed: August 21, 1998
    Date of Patent: July 4, 2000
    Assignee: ETI Technologies, Inc.
    Inventors: Paul Wierzba, Weijia Cao
  • Patent number: 6067822
    Abstract: A concrete ring as a balancing weight for a washing solution container of a washing machine includes a ring part which is U-shaped in cross-section, open at one side and filled out with a mass containing concrete. The outer periphery of the ring part has a connecting device to be connected with the washing solution container. This structure makes a continuous production of the concrete ring possible.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: May 30, 2000
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Lothar Heinzel, Lorenz Claussen
  • Patent number: 6041626
    Abstract: A washing tub for use in a washing machine has a reservoir water tub in a cabinet, a pulsator rotatably disposed at bottom thereof and a balancer mounted on top thereof. The washing tub includes an outer tube having a base and a body mounted on the base, an inner tube disposed within the outer tube at regular intervals and guide members interposed between the outer and the inner tubes. The inner tube has a basal part opposed to the base of the outer tube and a body mounted on the basal part. The body of the outer tube consists of a plurality of first panels with a plurality of through-holes and a plurality of second panels alternatively connected to each other, while the body of the inner tube consists of a plurality of first plates with a plurality of through-holes opposed to each of the first panels of the outer tube and a plurality of second plates opposed to each of the second panels alternatively connected to each other.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: March 28, 2000
    Assignee: Daewoo Electronics Co., Ltd.
    Inventor: Young Jun Jung
  • Patent number: 5979195
    Abstract: A sealing device is provided to bridge a gap defined between open frontal portions of inner and outer tubs of a horizontal axis washing machine in order to prevent foreign objects from getting into the outer tub from the inner tub through the gap and potentially clogging a pumping system of the machine. In the preferred form of the invention, the sealing device includes a first seal portion fixedly secured to a lower, inner wall portion of a cover attached to the outer tub and a flexible, second seal portion which extends toward and preferably slidably contacts a balance ring provided about the open frontal portion of the inner tub. In accordance with one embodiment, the sealing device is constituted by a brush member, with the second seal portion being defined by bristles of the brush member. In another embodiment, the sealing device is constituted by a plastic film having one longitudinal side secured to the outer tub cover and another longitudinal side in sliding contact with the balance ring.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: November 9, 1999
    Assignee: Maytag Corporation
    Inventors: Gary D. Bestell, Troy A. Johnson, Louis R. Smothers, Theodore R. Van Drimmelen, Evan R. Vande Haar, William R. White
  • Patent number: 5974839
    Abstract: A counterbalance weight is provided for a laundry washing machine tub. The weight includes a weighted body securable to the tub with a foam impact-absorbing member mounted on the body in a position below the tub so as to absorb impact forces on the tub. The body of the counterbalance weight includes a pair of open slots adapted to receive bolts extending from the tub so as to slidably mount the counterbalance weight onto the tub. In an alternative embodiment, impact-absorbing members are provided on the bottom of a hung strut tub to absorb impact to the tub and to maintain the vibration-absorbing function of the strut springs.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: November 2, 1999
    Assignee: Maytag Corporation
    Inventors: Troy A. Johnson, Greg K. Harmelink, Stephen D. Ostdiek
  • Patent number: 5965236
    Abstract: A large-sized and heavy part (1) of plastic material is injection molded. Localized zones are created in which the thermal conductance of the part (1) is higher in the surface impressions (10) at the mold ejectors for the removal of the part after it has been molded. In a preferred embodiment, the outer surface of the part (1) has, at the surface impressions (10), clusters of closed-bottom pits (13) formed by grids of mini-ribs (11) and (12) arranged perpendicularly with respect to each other. The thickness of the part varies from a maximum value (S1) at the periphery of the cavity to a minimum value (S2) at the bottom of a substantial number of the pits (13).
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: October 12, 1999
    Assignee: Electrolux Zanussi Elettrodomestici S.p.A.
    Inventor: Piero Durazzani
  • Patent number: 5953939
    Abstract: The present invention relates to a clothes wash system by means of the method of recirculating pumping of water, which is adapted to a squeeze dry system, that consists in eliminating by the centrifugation method, the excess of water impregnated in the just washed laundry making the drum that contains said laundry, to rotate freely over a virtual axis that passes by the mass center of the assembly, to avoid vibrations and allowing a higher rotation velocity.
    Type: Grant
    Filed: September 19, 1996
    Date of Patent: September 21, 1999
    Inventors: Gilberto Manuel Guerrero-Parra, Salvador Virgilio Guerrero-Parra
  • Patent number: 5924312
    Abstract: A tuned vibration absorber mounted to the enclosure of a machine. The vibration absorber is suspended to absorb the vibration created by the dynamic system of the machine. The vibration absorber includes a mass and a plurality of springs used to suspend the mass in a desired location.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: July 20, 1999
    Assignee: Maytag Corporation
    Inventor: Evan R. Vande Haar
  • Patent number: 5916274
    Abstract: A ball balancer for a washing machine having a rotary tub is provided. The ball balancer comprises an annular casing installed coaxially atop a cylindrical body of the rotary tub and having a radial inner wall and a radial outer wall to form an annular chamber therebetween. Balancing balls and viscous fluid are movably contained in the chamber. An annular reinforcing member is arranged coaxially with the outer wall and is disposed radially inside or outside of that outer wall for reinforcing the outer wall against radially outward forces. The reinforcing member may comprise a cylindrical band attached to the outer wall, or it may be defined by an upper portion of the cylindrical tub body.
    Type: Grant
    Filed: June 18, 1998
    Date of Patent: June 29, 1999
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joon Yeop Lee, Do Weon Kim
  • Patent number: 5913951
    Abstract: A radially mounted motor is provided in a closed system fluid balance ring for high rotational speed washing machines. The motor is mounted at an orientation of 90.degree. relative to the rotational axis of the washing machine spinner. Such an orientation prevents adverse effects on the motor contacts from centrifugal forces generated by the rotating spinner. A 90.degree. orientation also eliminates deflection of the motor shaft and excessive friction on the motor bearings. The angular orientation of the motor assures proper functioning of the closed system fluid balance ring of the washing machine. The balance system also includes a valve to control movement of fluid within the ring. The valve is mounted at an angle with respect to a tangent of the spinner so as to prevent detrimental effects from the centrifugal forces of the rotating spinner.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: June 22, 1999
    Assignee: Maytag Corporation
    Inventors: Joel L. Herr, Troy A. Johnson, John E. Thomas
  • Patent number: 5906756
    Abstract: A balancing device for a drum type washing machine is attached to a spin basket of the washing machine. The balancing device includes annular-shaped races that house balls and oil. The balls are seated in each race, and oil is supplied to the inside of each race through a hole formed thereon. Then, the hole is sealed by a welding process.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: May 25, 1999
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Moo Lee, Sam-Yong Jang
  • Patent number: 5893281
    Abstract: A tethering system is provided for a washing machine having a hung strut suspension. The tethering system includes a pair of pulleys or cams pivotally mounted in the cabinet. A pair of subframe straps are secured between the cams and the subframe of the hung assembly. An anti-rotation strap extends partially around the tub with opposite ends secured to the cams. When the tub of the machine is filled with water, the hung assembly moves downwardly due to the weight of the water, thereby rotating the cams which tighten the anti-rotation strap into frictional engagement with the tub. Thus rotation and oscillation of the tub is prevented during the agitation and low speed spin cycles of the machine.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: April 13, 1999
    Assignee: Maytag Corporation
    Inventor: Daniel E. Teich
  • Patent number: 5870908
    Abstract: A new load balancing device for correcting a load imbalance in a rotating member such as a spin basket in a wash machine. The inventive device includes a tube member in a circular configuration with a fluid and spherical ballast members provided within the hollow interior of the tube member.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: February 16, 1999
    Inventor: Paul S. Rushlow
  • Patent number: 5862553
    Abstract: A clothes washing machine is provided with an oscillating washing assembly including a rotating drum capable of being driven at various rotating speeds and provided with a plurality of annular hollow bodies secured to the drum. A plurality of moving masses are capable of freely moving within the hollow bodies. Before at least one spin-extraction phase, the drum is driven to rotate in a continuous manner at a variable, relatively low speed which is lower than the resonance frequency of the oscillating washing assembly, but is adequate to cause the washload in the drum to keep adhering against the inner peripheral surface of the drum. As soon as the moving masses succeed in distributing themselves in such a manner that their center of gravity locates itself in a position that is substantially opposite to the unbalance condition of the washload, the drum is started to rotate at the desired spin-extraction rate.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: January 26, 1999
    Assignee: Electrolux Zanussi Elettrodomestici S.p.A.
    Inventors: Ingo Haberl, Mario Trangoni
  • Patent number: 5857361
    Abstract: A balancing device for a drum washing machine is disclosed. The balancing device includes annular-shaped races provided on both sides of the a spin basket, and a plurality of movable bodies seated in the races. A spherical movable body is arranged to contact three inner sides of one race during rotation of the spin basket about a horizontal axis. Either one of the races includes first and second sides spaced apart by a specific axial distance and facing one another, and third and fourth sides spaced radially apart for interconnecting the first and second sides. Either the third side or fourth side of the race is formed at an acute angle relative to the axis, the angle being in the range of 0.5.degree. to 0.85.degree..
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: January 12, 1999
    Inventor: Sam-Yong Jang
  • Patent number: 5857360
    Abstract: A clothes washing machine includes a rotary tub having a balancing apparatus at its upper end. The balancing apparatus comprises at least one annular chamber in which balls are movably disposed. A radially outer upright side surface of the chamber is inclined upwardly and outwardly so that the balls can ride up along that surface when the rotary speed of the tub exceeds a predetermined value. A plurality of chambers can be disposed, one above the other, wherein bottoms of the chambers are inclined obliquely relative to the axis of rotation, with the bottoms being out of phase with respect to one another by an angle equal to 360.degree. divided by the number of chambers.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: January 12, 1999
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyung-kyun Kim, Sung-jae Shin
  • Patent number: 5855127
    Abstract: A balancer mounted on an upper portion of a dehydration tub of a washing machine includes a balancer container formed into an annular configuration and having an upper opening, at least one partition wall standing from a bottom of the container so as to divide the interior of the container into at least two concentric compartments, a predetermined amount of liquid contained in each compartment of the container, a lid mounted on an upper portion of the container so as to close upper openings of the compartments, an air passage formed in a boundary between the partition wall and the lid so as to extend along a circumference of the container, and at least one hole formed in the lid to communicate with the air passage.
    Type: Grant
    Filed: March 12, 1997
    Date of Patent: January 5, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hisayoshi Kohara, Hiroshi Nishimura, Yuuji Takai
  • Patent number: 5850748
    Abstract: A front loading clothes washing machine includes a spin basket rotatably driven about a horizontal axis. Axially spaced front and rear sides of the spin basket are formed by panels. Disposed on each of the front and rear panels is a dynamic balancing mechanism comprised of an annular chamber arranged coaxially with the axis of rotation. The chamber contains a liquid and a plurality of balls freely movable within the liquid.
    Type: Grant
    Filed: December 27, 1996
    Date of Patent: December 22, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Cin Yong Kim, Do Weon Kim, Jin Soo Kim, Sam Yong Jang, Geum Chan Lee
  • Patent number: 5850749
    Abstract: A drum washing machine includes a tub suspended in a housing; a drum-type spin basket rotatably installed in the tub, and at least two radially spaced races provided on the spin basket concentric with the spin basket. Each race containing liquid and a plurality of balancer balls. The radially inner race has internal surfaces that are smoother than those of the radially outer race. The liquid in the inner race has less viscosity than the liquid in the outer race. The balls in the inner race have a smaller diameter than the balls in the outer race.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: December 22, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jin-Soo Kim
  • Patent number: 5829084
    Abstract: A method and system for balancing a load in an upright washing machine. A liquid ballast system is used that includes liquid filling channels with liquid filling slots that fill individual self-contained cells spaced equally around the top rim of the spin drum. The cells are open at the top and filled with liquid, water, by the pre-existing water supply nozzle of the washing machine. In the bottom of each cell is a dump valve to release water from the cell when activated. A stationary ring attached to the frame of the washing machine activates the dump valve. In a mechanical embodiment, a mechanical arm makes contact with the stationary ring when the suspended core of the washing machine leans off center in response to an unbalanced load. In an electrical embodiment, a solenoid valve is activated when a contact point makes electrical contact with a track in the stationary ring as the suspended core of the washing machine leans off center in response to an unbalanced load.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: November 3, 1998
    Inventor: Leslie H. Fujiwara
  • Patent number: 5816074
    Abstract: A balancing-device for a drum washing machine is disclosed, which includes a spin basket formed of front and rear panels connected with each other by a side panel; lifters provided to the side panel protruding to the inside of the spin basket; a plate member joined to each of the front and rear panels; annular races shaped from grooves formed by the attachment of either of the front panel or the rear panel to the plate member; and a plurality of balls seated in the races. The races are formed in a manner that allows the areas of the front and rear panels that contact the lifters to be planar, thus facilitating the construction of the spin basket.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: October 6, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jin-Soo Kim
  • Patent number: 5813253
    Abstract: In an arrangement for balancing of a main mass (14) having an imbalance and rotating about an axis (18) balancing masses (23; 24) are used which are relatively freely movable with respect to the main mass (14) and disposed in at least one closed path (22) symmetrically positioned around said axis (18). The main mass (14) is adapted to be rotated at speeds both below and above the critical speed and the path (22) is connected with the main mass (14) so as to rotate in synchronism therewith. Locking means (34, 36; 42, 43) are provided for locking the balancing masses (23/ 24) relative to the path (22) at rotating speeds below the critical speed and for releasing the balancing masses (23; 24) for movement relative to the path (22) at rotating speeds above the critical speed.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: September 29, 1998
    Assignee: Aktiebolaget Electrolux
    Inventor: Stig Goran Uhlin
  • Patent number: 5806349
    Abstract: A washing machine having a ball balancer is provided. The washing machine comprises: an external cabinet; an outer tub suspended inside the external cabinet; a rotary tub rotatably installed inside the outer tub for containing the laundry therein; and a ball balancer installed at a circumference of the rotary tub for balancing a rotation of the rotary tub. The ball balancer comprises: a casing installed at the circumference of the rotary tub and having at least one annual chamber formed therein; a multiplicity of balancing balls contained in the annual chamber of the casing; and a viscous fluid contained in the chamber of the casing. Here, the annual chamber of the casing is formed at the bottom of the annual chamber with at least one groove for receiving the balancing balls over a predetermind circumferencial length, and the groove has an inclined radial outer wall for guiding a upward movement of the balancing balls, as a rotational speed of the rotary tub increases.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: September 15, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Do Weon Kim, Sung Jae Shin