Balancing For Drum, E.g., Washing Machine Or Arm-type Structure, Etc., Centrifuge, Etc. Patents (Class 74/572.4)
  • Patent number: 9303352
    Abstract: A washing machine (1) is described comprising a hub (5) which extends from the middle of the rear wall of the tub (3) into the drum (2) and wherein the shaft (4) is supported, at least one drum baffle (9) disposed at the inner surface of the drum (2), wherein water is transferred in case of an unbalanced load, a cylindrical housing (6) disposed at the center of the rear wall of the drum (2) around the horizontal axis, surrounding the hub (5) concentrically such that a gap remains between the hub (5) and the cylindrical housing (6) and rotating together with the drum (2), more than one ring-shaped gasket (7) arranged one after the other and in parallel to each other in the gap between the housing (6) and the hub (5), the outer edges of which are secured to the inner surface of the housing (6), rotating together with the housing (6) and the inner edges of which contact the cylindrical outer surface of the hub (5), more than one slot (8) disposed between the gaskets (7), at least two water inlet lines (13, 113)
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: April 5, 2016
    Assignee: Arcelik Anonim Sirketi
    Inventor: Ali Levent Hasanreisoglu
  • Patent number: 9260811
    Abstract: An annular auto-balancing mechanism consisting of an annular shaped housing that is filled with fluid of specific viscosity, characterized in that its balancing weights rotate around a series of circularly set supporting axes of balancing weights, which allows for the construction of an annular shaped mechanism, which, in turn, allows the mechanism to be installed on the front side of a drum for unobstructed opening and closing of the door of a washing machine, on the one hand, and maximal utilization of the mechanism's volume, on the other hand.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: February 16, 2016
    Inventor: Safedin Zelić
  • Patent number: 9187858
    Abstract: The present invention relates to a washing machine (1) comprising one or more baffles (8) disposed at the inner surface of the side wall (4) wherein liquid is transferred for counterbalancing the unbalanced load when unbalanced load occurs.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: November 17, 2015
    Assignee: ARCELIK ANONIM SIRKETI
    Inventors: Ali Levent Hasanreiso{hacek over (g)}lu, Celal Vatansever, Nihat Gunduz
  • Patent number: 9175430
    Abstract: A washing machine (1) is disclosed and includes a drum (2), a tub (3) wherein the drum (2) moves, a shaft (4), a cylindrical stationary hub (5) disposed on the rear wall of the tub (3) where the shaft (4) is supported, a bearing housing (7) in the middle of the hub (5) where at least one bearing (6) bearing the shaft (4) is placed, a cylindrical hub housing (8) connected to the rear wall of the drum (2), surrounding the hub (5) concentrically such that a gap remains between the hub (5) and rotating together with the drum (2) by transferring the movement of the shaft (4) to the drum (2), at least one balancing chamber (9) disposed in the drum (2) into which water is transferred by the unbalanced load status and a water distributing device (12) mounted between the hub (5) and the hub housing (8), having more than one ring-shaped gasket (10) arranged one after the other in parallel to each other and at least one slot (11) disposed between the gaskets (10).
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: November 3, 2015
    Assignee: ARCELIK ANONIM SIRKETI
    Inventors: Ali Levent Hasanreisoglu, Ersin Donmez
  • Patent number: 9150994
    Abstract: A balance ring for an appliance is provided that has features to control fluid distribution particularly during certain critical speeds where large oscillatory motion created by an out of balance condition might otherwise cause the balance ring fluid to redistribute improperly. The balance ring can include an inner chamber that is in fluid communication with an outer chamber. The inner chamber can include baffles that impede the movement of fluid along the circumferential direction when e.g., the balance ring experiences large oscillatory motion.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: October 6, 2015
    Assignee: General Electric Company
    Inventor: Paul Owen Davis
  • Patent number: 8991219
    Abstract: The present invention relates to a washing machine (1) that comprises a tub (2), a cylindrical drum (3) having a rear wall (7) wherein the items to be washed are emplaced, disposed coaxially inside the tub (2), one or more ribs (4) arranged on the inner periphery of the drum (3) and forming protrusions into the drum (3), a shaft (8) housed in the tub (2) that transfers the movement to the drum (3) and a bearing (9) situated at the center of the tub (2) rear wall (7), remaining stationary together with the tub (3), wherein the shaft (8) is housed, extending towards the center of the drum (3) and at least one water feeding line (10) situated inside the bearing (9) having an inlet connected to the mains water supply and an outlet opening outside the bearing (9).
    Type: Grant
    Filed: November 27, 2008
    Date of Patent: March 31, 2015
    Inventor: Levent Hasanreisoglu
  • Patent number: 8820674
    Abstract: A carrier structure for a rotor and a method of preventing the coupling of the vibration modes of a carrier structure of a flying machine with the vibration modes of a rotor are provided. The carrier structure has an airframe and a mounting structure suitable for being engaged with the rotor. A vibration-damper mechanism is fitted to the mounting structure and has a resonator that includes a weight element, a damper, and a first deformable member. The weight element is a flapping weight element and is carried by the mounting structure via the first deformable member. The first deformable member allows the weight element to move with respect to the mounting structure and restrains the mobility of the weight element. The damper is interposed between the weight element and the mounting structure for damping the movement of the weight element.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: September 2, 2014
    Assignee: Airbus Helicopters
    Inventor: Paul Cranga
  • Patent number: 8820124
    Abstract: A drum type washing machine including a balancer capable of rapidly reducing vibration of a spin tub. The drum type washing machine includes a spin tub which is rotated by receiving rotational force from a driving motor through a rotating shaft, a rear balancer having an annular shape and being coupled to the spin tub, and a shaft flange provided at a center portion thereof with the rotating shaft and coupled to the spin tub so as to uniformly transfer the rotational force to the spin tub. The rear balancer is supported on a rear surface of a rear cover by the shaft flange. Thus, the balls accommodated in the balancer are prevented from moving out of the balancer, even if the balancer is broken due to long-period use.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: September 2, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ja Young Kim, Ito Michaki, Doo Young Ryu, Myung Sun Kang
  • Patent number: 8631526
    Abstract: Method for controlling the centrifugation process of a washing machine, wherein during a first, a second and a third laundry distribution phases (D1, D2, D3), performing a number of unbalance value measurements (M1-M7) and comprising an unbalance value of the drum of the washing machine with predetermined unbalance values. If the current unbalance values are within predetermined intervals, the washing machine performs a spin phase (S1, S2, Smax). If the values are not within the predetermined intervals, the washing machine performs a laundry redistribution phase (R1, R2), after which a further laundry distribution phase (D1, D3) may take place.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: January 21, 2014
    Inventors: Milan Janicek, Zuzana Vasickova, Pavel Stepan
  • Publication number: 20130327098
    Abstract: A washing machine having a balancer housing capable of transmitting electric power from an external power source to a balancing module. The washing machine includes a rotary drum, and a balancer to counterbalance an unbalanced load generated in the rotary drum. The balancer includes a balancer housing mounted to the rotary drum, and a balancing module having a moving unit to move inside the balancer housing. The balancer housing includes an electrode provided at an inner surface of the balancer housing in a circumferential direction thereof in order to transmit electric power to the moving unit of the balancing module, an electric wire electrically connected to the electrode in order to apply electric power from an external power source to the electrode, and a connector provided at an outer surface of the balancer housing in order to electrically connect the electric wire and the electrode.
    Type: Application
    Filed: June 5, 2013
    Publication date: December 12, 2013
    Inventors: Il Sung BAE, Myung Chul KIM, Moo Hyung LEE, Jae Seuk PARK, Sung Jin CHO, Kwan Joo MYOUNG, Se Jin JO
  • Patent number: 8561499
    Abstract: A pendulum absorber assembly for a torque converter including a first spring retainer, a second spring retainer, and a floating flange positioned between the first spring retainer and the second spring retainer. The pendulum absorber assembly also includes a drive plate affixed to the floating flange, a plurality of arcuate springs disposed between the second spring retainer and the drive plate, and a plurality of pendulum weights affixed to the second spring retainer, wherein the pendulum weights are made of tungsten alloy.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: October 22, 2013
    Assignee: Chrysler Group LLC
    Inventors: Marvin G. Schiemann, Michael Fingerman, Tomaxz K. Kietlinski, Bruce Geist
  • Publication number: 20130233028
    Abstract: A balance ring for an appliance, such as e.g., a washing machine, is provided. The balance ring can reduce or eliminate features such as sink marks that might otherwise impede the movement of counterweights in the balance ring. The counterweights are used to stabilize a rotating element of the appliance.
    Type: Application
    Filed: March 12, 2012
    Publication date: September 12, 2013
    Applicant: General Electric Company
    Inventors: Christopher Nils Naber, Gary M. Barr
  • Publication number: 20130174690
    Abstract: Disclosed is a ball balancer that increases a rate of balls in ball detention portions and restricts aggravation of unbalance caused by balls outside of the ball detention portions. When a rotation speed of a rotator is less than a first rotation speed, the ball detention portion allows the ball moved from a rolling face to be detained therein and to allow the ball therein to come into contact with the released ball outside thereof to prevent separation of the released ball from the rolling face. Anti-separation portions are provided to come into contact with the released balls outside of the ball detention portions to prevent separation of the released balls from the rolling face. When the rotation speed is greater than the first rotation speed, the ball detention portion allows separation of the ball therein to the rolling face by centrifugal force applied thereto.
    Type: Application
    Filed: December 17, 2012
    Publication date: July 11, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: SAMSUNG ELECTRONICS CO., LTD.
  • Patent number: 8459148
    Abstract: A ball balancer and a laundry apparatus having the same are disclosed. A ball balancer includes a circular housing comprising motion space formed therein, a fluid inlet and an air outlet, a plurality of ball members movable in motion space of the housing, a closing member closing up the fluid inlet and the air outlet, and viscous fluid filled in the motion space via the fluid inlet formed in the housing. The ball balancer according to the present invention may be fabricated more efficiently.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: June 11, 2013
    Assignee: LG Electronics Inc.
    Inventors: Dong Woo Kang, Youn Su Jung
  • Patent number: 8459147
    Abstract: A rotor balance adjusting member and a rotor balance correction method are disclosed. The rotor balance adjusting member has a ring member fixed to a pulley concentrically and comprises a weight and a clip member which fixes the weight to the ring member. The ring member has an outer side fit-in slot, and inner side fit-in slot, an outer side stop slot, and an inner side stop slot. The clip member comprises an elastic material and moves in a circumferential direction regulated by the outer side fit-in slot and the inner side fit-in slot. The weight fixed to the clip member is arranged in a position which counters the inner side of the ring member when the clip member is fitted in the ring member.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: June 11, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Tomonari Harada
  • Publication number: 20130133475
    Abstract: An annular auto-balancing mechanism consisting of an annular shaped housing that is filled with fluid of specific viscosity, characterized in that its balancing weights rotate around a series of circularly set supporting axes of balancing weights, which allows for the construction of an annular shaped mechanism, which, in turn, allows the mechanism to be installed on the front side of a drum for unobstructed opening and closing of the door of a washing machine, on the one hand, and maximal utilization of the mechanism's volume, on the other hand.
    Type: Application
    Filed: July 26, 2011
    Publication date: May 30, 2013
    Inventor: Safedin Zelic
  • Publication number: 20120278996
    Abstract: A washing machine which improves performance of balancers, and a control method thereof. The washing machine includes a drum accommodating laundry and rotated by rotary force transmitted from a drive source, balancer housings mounted on the drum, each of the balancer housings including a disc-shaped channel formed therein, balancing modules movably disposed in the channels of the balancer housings, vibration sensors to sense unbalance applied to the drum during rotation of the drum, position sensors to sense the positions of the balancing modules, and a controller controlling movement of the balancing modules to positions to compensate for the unbalance sensed by the vibration sensors.
    Type: Application
    Filed: March 28, 2012
    Publication date: November 8, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae Seuk Park, Moo Hyung Lee, Il Sung Bae, Sung Jong Kim
  • Patent number: 8286531
    Abstract: An automatic balancing device for counterbalancing an out-of-balance mass includes a plurality of counterbalancing masses, each of which is movable in a circular path about the axis so as to generate a balancing force. The balancing forces combine to produce a resultant balancing force which varies between minimum and maximum values. At a first speed of rotation of the body about the axis, the movement of at least one of the counterbalancing masses is restrained so that a substantially constant, non-zero resultant balancing force is produced, the resultant balancing force being freely movable about the axis. At a second speed of rotation of the body about the axis, the counterbalancing masses are free to adopt a position in which the out-of-balance mass is counterbalanced. The device allows at least partial counterbalancing of the out-of-balance mass at speeds below the critical speed of the system in which it is used.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: October 16, 2012
    Assignee: Dyson Technology Limited
    Inventors: David Michael Jones, Matthew Damian Harrison, Matthew Charles Edward Wilson
  • Patent number: 8281686
    Abstract: An eddy-current actuated balancer includes a barrel having a locating wall at one end thereof; two balancing wheels mounted around the barrel and carrying a respective counterweight at the border, a washer set between the balancing wheels, an elastic ring and a lock ring and a pulsed magnetic field generator mounted on each balancing wheel. The balancing wheels, the washer and the elastic ring are clamped between the locating wall of the barrel and the lock ring. Each pulsed magnetic field generator is controlled to generate a pulsed magnetic field acting upon the associating balancing wheel during its rotation for inducing an eddy current that causes the associating balancing wheel to make an angular displacement relative to the barrel for balance adjustment.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: October 9, 2012
    Assignee: National Chung Cheng University
    Inventors: Jeng-Shyong Chen, Po-Ting Li, Yong-Chang Zeng
  • Patent number: 7958801
    Abstract: A force generator for an active vibration control (AVC) system provides a mass located upon an inner circular member which is movable within an outer circular member to simultaneously complete one revolution about its axis as it orbits within the outer circular member to compensate for sensed vibrations. A crank mounts the inner circular member and a counterweight. The crank is rotated by a prime mover such as an electric motor. The mass will therefore generate a sinusoidal inertial force in a straight line. Multiple systems are suitably arranged to be used in conjunction with one another to provide a wide range of inertial force outputs.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: June 14, 2011
    Assignee: Sikorsky Aircraft Corporation
    Inventor: Kirk Charles Frederickson
  • Publication number: 20110120192
    Abstract: The fluid balancer includes balancer housings in which ring-shaped flow chambers partially filled with a fluid are provided, and a plurality of guides disposed in the flow chambers and separated from each other in the circumferential direction of the flow chambers. The plurality of guides is provided with first communication holes provided on inner peripheral sides of the balancer housings and second communication holes provided on outer peripheral sides of the balancer housings, and the performance of the fluid balancer is improved by adjusting an area of the second communication holes and a volume filling each of the flow chambers.
    Type: Application
    Filed: October 27, 2010
    Publication date: May 26, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Chang Min Song
  • Patent number: 7942801
    Abstract: The present invention relates to a centrifuge including a balancer which contains balls and liquid and enables a rotor to rotate steadily. More concretely, the centrifuge comprises a motor, a motor shaft protruded from the motor, a rotor, and a balancer which includes a space constructed with a balancer body and a cover unit combining with the balancer body and formed to contain balls and liquid.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: May 17, 2011
    Assignee: Hanlab Corporation
    Inventors: Heuigeun Ryu, Ohhun Kwon, Sungha Chang
  • Patent number: 7819792
    Abstract: The present invention relates to the automatic balance adjusting centrifuge that enhances the efficiency of space utilization by simplifying the structure as well as supports a precise movement by improving the structure of the balance weight transport apparatus in the automatic balance adjusting centrifuge that compensates the unbalance of the centrifugal force by transferring the balance weight equipped in the rotor rotational arm. According to the automatic balance adjusting centrifuge of the present invention, the structure is simplified as well as the precise and exact transfer of the balance weight is possible by connecting the balance weight with the axis of the motor directly and adopting the length sensor. Furthermore, the efficiency of space utilization is enhanced because the axis of rotation of the balance weight transfer motor is in radial direction of the rotational arm.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: October 26, 2010
    Assignee: Hanlab Corporation
    Inventors: Heuigeun Ryu, Ohhun Kwon, Sunghyuk Lee, Sanghoon Lee
  • Patent number: 7810410
    Abstract: The present invention relates to a drum rotatable provided in a washing machine or a dryer to dry laundry. A drum for a washing machine or a dryer includes an operable drum door provided at a circumferential surface of the drum; a balance weight provided at the circumferential surface of the drum. The balance weight is placed opposite to the operable drum door to balance the drum.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: October 12, 2010
    Assignee: LG Electronics Inc.
    Inventors: Jin Woong Kim, Na Eun Kim, Young Hwan Park
  • Publication number: 20090100879
    Abstract: A tub (100) for a washing machine, and a washing machine comprising the same are disclosed. The tub (100) is formed through injection molding with a bearing housing (200) inserted therein, and the washing machine comprises the same. Here, the bearing housing (200) comprises a flange (210) extending to have a protruded part (216) and a recessed part (215) in a radial direction. The tub (100), and the washing machine comprising the same solve the problems of the conventional washing machine, and fulfil various requirements. The tub (100) has excellent strength and rigidity of the rear wall thereof, exhibits a strong coupling force with respect to the inserted bearing housing (200), and reduces manufacturing costs. Thus, the washing machine has all the characteristics of the tub (100).
    Type: Application
    Filed: May 12, 2006
    Publication date: April 23, 2009
    Inventors: Hyeok Deok Kim, Byung Hwan Ahn, Hung Myong Cho
  • Patent number: 7503735
    Abstract: A spindle structure in which a noise occurrence due to a tap hole and a screw is effectively prevented. A nut for adjusting a preload of a bearing is threadedly engaged with an outer circumference of a spindle. On an edge of the nut, a plurality of tap holes for balance adjustment are provided at even intervals on a circumference centered around the axis of the spindle and to be parallel to the axial direction of the spindle. These tap holes are countersunk, and a plate screw is threadedly engaged so that an edge of each plate screw is flush with a surface of the nut. In addition, the plate screw is used as a balance weight by changing the length thereof.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: March 17, 2009
    Assignee: Okuma Corporation
    Inventors: Tomoharu Ando, Takashi Norihisa
  • Patent number: 7481108
    Abstract: A method is provided for balancing a rotating member having an annular balancing groove which is configured to receive and retain a balancing projectile. The method includes determining a circumaxial imbalance location, and firing a balancing projectile in timed relationship with the rotation of the member so that the balancing projectile enters the groove at the imbalance location. Such steps are repeated as required to cure additional points of imbalance.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: January 27, 2009
    Assignee: The Bergquist Torrington' Company
    Inventors: Drew M. Rocky, John F. O'Connor, Jr., Russel H. Marvin
  • Patent number: 7465146
    Abstract: Methods and apparatus for a balance weight access assembly are provided. The assembly includes an access cover, and an access tube including a first opening, a second opening, and a substantially hollow body extending therebetween. The first opening is positioned proximate to a balance weight retainer, the second opening is positioned proximate to the access cover, and the body is positioned in substantial alignment with an installation axis of the balance weight retainer.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: December 16, 2008
    Assignee: General Electric Company
    Inventors: Dale Michael Kennedy, Wayne Garcia Edmondson, Sr.
  • Patent number: 7435211
    Abstract: Disclosed herein are a balancer which is provided with a curved portion at a balancing space so that movement of balls is accelerated at the moment a rotational speed of a rotor exceeds a resonant speed, thereby stabilizing the rotation of the rotor without vibration regardless of when the rotational speed of the rotor is less or more than the resonant speed, and a centrifuge using the above balancer. The balancer includes a body which is formed with a balancing space thereinside. The balancing space has a circular circumference, and is defined by a bottom portion, a slanted portion extending upward from the bottom portion, a curved portion formed at an end of the slanted portion, and an upper large-diameter portion extending from the curved portion. The balancer further includes a plurality of balls which are contained in the balancing space.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: October 14, 2008
    Assignee: Korea Institute of Machinery & Materials
    Inventors: Young Cheol Kim, An Sung Lee, Byung Ok Kim
  • Publication number: 20080223172
    Abstract: The invention relates to a method for fixing at least one balancing weight (1) to at least one point (2) on a hollow shaft (3), whereby the balancing weight(s) (1) is or are soldered to said point(s) (2). The invention also relates to hollow shafts (3) that have been produced according to said method and to a drive system (13) for a vehicle (14). The method facilitates the production of especially light, heavy-duty drive shafts for motor vehicles.
    Type: Application
    Filed: September 10, 2004
    Publication date: September 18, 2008
    Inventors: Thomas Pullen, Rolf Cremerius
  • Patent number: 7393164
    Abstract: The present invention provides a dynamic balancing ring for a cutter holder for balancing the cutter holder. The dynamic balancing ring includes a circle, plural fixing elements and an adjusting element. The plural fixing elements are used for fixing the circle on the cutter holder, and after the center-of-gravity position of the cutter holder is obtained by dynamic balance corrector, the adjusting element can be installed at a position on the circle corresponding to the center-of-gravity position, and through adjusting the adjusting element, the dynamic balance of the cutter holder can be corrected. For using the dynamic balancing ring for the cutter holder according to the present invention, it is convenient that the dynamic balancing ring can be directly installed on the cutter holder, which is needed to be corrected, without additional processing.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: July 1, 2008
    Assignee: Primetool Mfg, Inc.
    Inventor: Peter Chen
  • Publication number: 20080141731
    Abstract: Disclosed herein are a rotation body control device capable of suppressing a vibration, and a washing machine including the same. The rotation body control device includes at least two balancing units each including an annular race and a plurality of rolling bodies seated in the race to be moved according to a rotation of the rotation body; a rotation number measuring unit measuring a number of rotations of the rotation body; a detecting unit detecting a rotation speed of the rotation body; an analysis unit analyzing a variation in the rotation speed detected by the detecting unit and calculating a weight of the imbalance occurring in the rotation body; and a control unit controlling the rotation of the rotation body according to the calculated weight of the imbalance by the analyzing unit.
    Type: Application
    Filed: December 7, 2007
    Publication date: June 19, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Suzuki Seiichiro, Kanazawa Naoki, Matsui Shoichi, Sato Sadayuki
  • Patent number: 7305905
    Abstract: A rotatable member is adapted for dynamic balancing by the addition of balancing weights in the form of high speed projectiles fired at the member during rotation in timed relationship with the rotation of the member so as to impact the member at specific circumaxial locations required for balancing the member. The member has an annular groove for receiving the projectiles and securing the same at the desired locations. The groove has a cross sectional configuration slightly smaller than that of the projectile in at least one direction of measurement so as to engage and capture the projectile in retention in the groove.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: December 11, 2007
    Assignee: The Bergquist Torrington Company
    Inventors: Drew M. Rocky, Russel H. Marvin, John F. O'Connor, Jr.
  • Patent number: 7297097
    Abstract: Disclosed is a lift type weight measuring centrifuge which is able to measure the weight of a measurement object after spatially isolating the measurement object. The centrifuge includes an upper sensing plate to move upwards, and a weight sensing mechanism provided under the upper sensing plate to sense a weight of the measurement object seated on the upper sensing plate. The centrifuge further includes a lift mechanism to move both the upper sensing plate and the weight sensing mechanism vertically, and a control device to control the operation of the lift mechanism and to measure the weight of the measurement object using a weight sensing signal output from the weight sensing mechanism.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: November 20, 2007
    Assignee: Hanlab Corporation
    Inventors: Heui-Geun Ryu, Hak-Chul Kim
  • Publication number: 20070261513
    Abstract: The present invention relates to a drum rotatable provided in a washing machine or a dryer to dry laundry. A drum for a washing machine or a dryer includes an operable drum door provided at a circumferential surface of the drum; a balance weight provided at the circumferential surface of the drum. The balance weight is placed opposite to the operable drum door to balance the drum.
    Type: Application
    Filed: March 29, 2007
    Publication date: November 15, 2007
    Applicant: LG ELECTRONICS INC.
    Inventors: Jin Woong KIM, Na Eun KIM, Young Hwan PARK
  • Patent number: 7285085
    Abstract: An automatic balancing rotor for a centrifuge which compensates for imbalance of a centrifugal force occurring due to a weight difference of samples. The automatic balancing rotor includes a plurality of rotating arms spaced at regular angular intervals, with a plurality of buckets containing the samples supported by the rotating arms. The automatic balancing rotor includes a balance weight provided in each of the rotating arms to be movable in a radial direction, thus compensating for imbalanced centrifugal force applied to the buckets, and a balance weight mover which horizontally moves the balance weight in the radial direction of each of the rotating arms.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: October 23, 2007
    Assignee: Hanlab Corporation
    Inventors: Do-Gyoon Kim, Heui-Geun Ryu
  • Patent number: 7199971
    Abstract: Multiple balancing plugs (114) preferably have a common length and a common offset center of gravity (130) in the length dimension for providing dual plane balancing of a rotatable body (100). The rotatable body (100) includes a plurality of balancing plug holes (112a–f) for receipt of a balancing plug (114) as desired/required to address an imbalance associated with the rotatable body (100). One or more balancing plugs (114) may be disposed within the rotatable body (100) in a first orientation such that their respective centers of gravity (130) are disposed within a first plane (134). One or more balancing plugs (114) may be disposed within the rotatable body (100) in a second, opposite orientation such that their respective centers of gravity (130) are disposed within a second plane (138) that is spaced from the first plane (134).
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: April 3, 2007
    Assignee: Maxtor Corporation
    Inventors: Mark A. Buzek, Gale D. Johnson, David O. Whitt, III
  • Patent number: 7115090
    Abstract: The invention concerns a method comprising detecting tubes inside carriers (P), detecting an expected imbalance of the centrifuge (CE) and, when said detection reveals the presence of such an imbalance owing to the presence of an insufficient number of carriers (P) or an odd number of carriers (P), the method consists in: simulating the load of the centrifuge incorporating the incomplete carrier (P), selecting a balance-restoring carrier based on the number of tubes missing in the incomplete carrier (P), determining the boat of the centrifuge (CE) wherein the balancing carrier should be placed and installing said carrier in the boat.
    Type: Grant
    Filed: July 4, 2003
    Date of Patent: October 3, 2006
    Assignee: Stago Instruments
    Inventor: Benoit Lagarde
  • Patent number: 7025714
    Abstract: Centrifuge includes a plate, a detector for the position of the plate, a monitoring and control unit, to turn the plate and to stop it in predetermined angular positions; characterized by several balancing containers, a centrifugal detector, a device for providing a balancing product located at a fixed station, calculating means adapted to determine an angular position (?B) and a mass (m0) of an unbalance (B) as well as an angular position (?E) for a balancing mass (m1). The monitoring and control unit control the stopping of the plate in a predetermined angular position for the balancing mass (m1) in correspondence with the fixed station, and to control said device for supplying a balancing product to fill the one of the balancing containers that is located at the fixed station.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: April 11, 2006
    Assignee: Diagyr
    Inventor: Philippe Escal