US3389881A - Resilient supports for rotating machine parts - Google Patents

Resilient supports for rotating machine parts Download PDF

Info

Publication number
US3389881A
US3389881A US564616A US56461666A US3389881A US 3389881 A US3389881 A US 3389881A US 564616 A US564616 A US 564616A US 56461666 A US56461666 A US 56461666A US 3389881 A US3389881 A US 3389881A
Authority
US
United States
Prior art keywords
drum
elastic
centre
frame
resilient
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US564616A
Other languages
English (en)
Inventor
Stelwagen Jan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
US Philips Corp
North American Philips Co Inc
Original Assignee
US Philips Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from NL6509288A external-priority patent/NL6509288A/xx
Application filed by US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3389881A publication Critical patent/US3389881A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F49/00—Domestic spin-dryers or similar spin-dryers not suitable for industrial use
    • D06F49/06—Mountings, e.g. resilient mountings, for the bowl or casings; Preventing or damping vibrations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal

Definitions

  • FIG.6 F157 INVENTOR. JAN STELWAGEN June 25, 1968 J. STELWAGEN 3,389,881
  • a suspension system for rotatable drums of the type utilized in domestic washing/drying apparatus A rotatable drum is suspended in a rigid framework by a plurality of spring and damping elements which co-act to define an elastic system having an elastic center positioned along the central axis of the drum and particularly at the center of mass of the total rotating system.
  • the tension of springs which support the drum can be regulated thus permitting adjustment of the position of the elastic center of the elastic system.
  • the invention relates to a support for resiliently mounting a frame part, which supports the bearings of a rotatable component, for example, a drum of a device for Washing or spin-drying clothes with respect to a fixed frame part.
  • the support comprises an elastic system consisting of a number of resilient elements, the elastic system having an elastic centre.
  • a part of the frame supporting the bearings of the rotatable component is resiliently secured in a given manner to the remaining part of the frame.
  • the resilient support of the part of the frame supporting the rotatable component must satisfy a number of conditions. First of all said support must be capable of bearing the static load as a result of the constructions own weight. In addition, the support must give the system low critical natural frequencies both for the translation vibrations as a result of periodic forces acting in the direction of the axis of rotation and in directions at right angles thereto, and for the rotation vibrations as a result of the periodic moments operating in the same directions. Finally, the system must be dynamically stable at the operating speed of rotation. A difficulty in this connection is that vibrations occurring in or about a given direction result in vibrations in or about the other directions so that the total vibration picture becomes very complicated.
  • a rotatable drum for a washing/drying machine is suspended in a rigid frame- 3,389,881 Patented June 25, 1968 ice I work.
  • the suspension assembly includes a plurality of spring and damping elements which support the drum in an elastic system having an elastic center along the central axis of the drum, preferably at the center of mass of the drum.
  • a drum having a vertically positioned centroidal axis is disposed within a rigid frame.
  • a shaft aligned with the centroidal axis of the drum interconnects the drum with a motor.
  • a resilient element provides an elastic attachment between the motor and the frame.
  • a pair of damping elements interconnect the shaft to the frame.
  • the elastic centre may be defined as the point of intersection of a system of elastic principal axes.
  • the principal axes comprise a system of three axes which extend mutually at right angles, each having the prop erty that a force acting along an axis causes only a translation of the resiliently supported components in the direction of that axis and a torque acting about the direction of the axis causes only an angular movement about the direction of that axis.
  • a further improvement is achieved by a decrease of the number of degrees of freedom. If the system is constructed so that an elastic principal axis thereof coincides at least approximately with a principal axis of inertia of the resiliently supported frame part.
  • the elastic centre and the said centre of mass must be located within the area of a cross-sectional plane of the rotatable component determined by the circumference of the said component at right angles to the centre line of its bearings.
  • the elastic centre of the resilient support is controllable in such manner that the elastic centre thereof can be positioned at least approximately in the centre of mass of the resiliently supported frame part, and in that at least one point of action of at least one of the resilient elements of the resilient support is controllable in such manner that the elastic centre of the elastic system can be arranged at least approximately in the centre of mass of the resiliently supported frame part.
  • the elastic centre of the elastic system can be arranged at least approximately in the centre of mass of the resiliently supported frame part.
  • the elastic system may also be considered to be a damping system, and a damping centre and damping principal axes may be defined in a similar manner. So everywhere where an elastic centre and elastic principal axes are mentioned, the expressions may be replaced by damping centre and damping principal axes respectively to obtain similar advantages and to yield analogous effects.
  • FIGURE 1 is a rear view of a domestic clothes washer and spin-drying machine according to the invention after removing the rear wall.
  • FIGURE 2 is a side elevation of the same machine after removing a side wall
  • FIGURE 3a and 31 show the connection of one of the resilient elements to the tub in front and side view respectively.
  • FIGURE 4 shows a connectionof a resilient element the resilience of which can be controlled.
  • FIGURE 5 shows a connection of a resilient element of which a point of action can be displaced.
  • FIGURE 6 is a diagrammatic cross-sectional View at '1 right angles to the axis of the same machine in another embodiment.
  • FIGURE 7 is a diagrammatic cross-sectional view in the direction of the axis of rotation of still another embodiment of the machine of this type.
  • FIGURE 8 is a vertical cross-sectional View of a domestic spin-drying machine for washing which has a vertical axis of rotation
  • FIGURE 9 is a horizontal cross-sectional view taken on the line A-A of the machine shown in FIGURE 8.
  • the domestic clothes washing and spin-drying machine shown in FIGURES 1 and 2 comprises a frame 1 which consists of a bottom plate and a top plate and four upright side walls which usually are manufactured from sheet steel, if required reinforced by means of ribs, corner pieces, and so on.
  • a tub 2 likewise of sheet steel, for containing the wash-liquid.
  • This tub comprises the bearings 3 for the shaft 4 of a cylindrical drum 5 in which the clothes are to be washed.
  • the drum is preferably manufactured from perforated stainless steel plate.
  • the centre line of the bearings of the shaft of the drum is denoted by 6.
  • the shaft of the drum comprises a pulley 7 which is driven by a motor 9 through a belt 8 and a pulley 10 secured to the shaft of the motor.
  • the motor 9 is secured to the tub 2.
  • the motor with the transmission mechanism coupled thereto is constructed for driving the drum at a speed of approximately 50 revolutions per minute during washing, that is when the drum contains clothes and the tub is filled with washing liquid.
  • the drum is driven at a speed which exceeds 800 revolutions per minute and preferably is 1200 to 1500 revolutions per minute during spin-drying, when the tub is empty. This speed is required for removing the sufficient liquid out of the clothes.
  • the washing drum has an outside diameter of approximately 50 cms.
  • the tub 2 At its top side the tub 2 comprises an opening 11 for loading the washing.
  • the drum 5 has a corresponding opening in its cylinder surface which opening can be closed by a cover (not shown).
  • the opening 11 in the tub adjoins an opening 12 in the frame which can be closed by a cover 13.
  • a sleeve 14 of flexible material, for example, rubber, is provided around the opening 12 for sealing purposes.
  • the tub 2 to which the motor 9 is secured and in which the drum 5 is journalled is resiliently connected to the frame 1 in such manner that the forces and moments produced by the eccentric load as a result of the presence of the washing in the drum 5 during operation are not transmitted, or are transmitted only to a very small extent, to the frame 1.
  • This resilient connection includes a number of resilient elements, namely four helical springs 15 and four rubber rings 16.
  • the elements 15 and 16 together constitute an elastic system and are chosen to be so that the elastic centre of this system theoretically coincides with the centre of mass of the resiliently supported part of the machine, namely the tub 2 with the drum 5 journalled therein and the parts secured thereto, for example, the motor and other components which are not shown.
  • the upper ends 17 of the helical springs 15 are secured to a metal board 18 rigidly secured to the frame 1 by means of screw-threaded members 35 provided with nuts 27; the lower ends of saidmembers are provided with eyelets 36, through which the ends 17 of the springs are threaded (FIGURE 4).
  • the frame 1 is placed on casters 26 which is possible by using the invention, since no or substantially no periodic inertia forces act upon the frame.
  • the springs 15 are arranged approximately in a vertical position. These springs carry the weight of the resiliently supported parts. These springs are chosen to be as slack as possible so as to give the system the lowest possible natural frequencies. In this case a limit is imposed upon the natural frequencies to be reached by the static elongation of the springs. The additional elongation of the springs when the tub is filled with washing liquid and the drum with washing may in general not exceed a few centimetres. This means that a natural frequency in a vertical direction which is smaller than approximately 2 cycles per second, can substantially not be reached. In a horizontal direction, however, the natural frequency in this arrangement need not be higher than approximately 1 cycle/ sec.
  • the rubber rings 16 in general do not contribute to carrying the weight of any structural component. These rings which are arranged at an angle of approximately first of all have the function of causing the elastic centre of the resilient support to coincide with the centre of mass of the resiliently supported part and, secondly, they serve for damping the vibrations which occur during passing a critical speed. They are preferably manufactured from an elastomer, for example, butyl rubber, which has damping properties which are independent of the vibration frequency.
  • the tension of the springs 15 can be controlled in a simple manner by displacing the nuts 27 as shown in FIGURE 4.
  • the stress of the rings 16 can be controlled in a simple manner by displacing the pins 21 in the slots 37 of the strips 24 as shown in FIGURE 3.
  • the connection point of the rings 15 to the tub 2 can be made adjustable in the manner as shown in FIGURE 5.
  • the tub 2 is provided with corner pieces 28, comprising slots 29 through which bolts can be inserted with which the strips 24 are secured to the corner pieces 28.
  • springs 32 which are arranged at an angle as diagrammatically shown in FIG URE 6 (springs 32), while instead of the rubber rings 16 steel helical springs may be used, for example, the springs 33 in FIGURE 6.
  • resilient elements in the elongation of the centre line 6, for example, the springs 34 shown in FIGURE 7.
  • springs are preferably used which have a great rigidity in the direction of the centre line 6 and possibly a negative rigidity in the directions at right angles thereto, as a result of axial pre-stress or torsional pre-stress. Both steel springs and rubber rings may be used for this purpose.
  • This construction has particular advantages, when the drum 5 has a large length in relation to its diameter and consequently a proportionately large moment of unbalance in a direction at right angles to the shaft is to be expected as a result of unequal distribution of the washing over the longitudinal direction.
  • the pre-stress and the resulting negative rigidity of one or both elements 34 located in the direction of the centre line 6 further has the advantage that this negative rigidity can compensate for the positive rigidity of the springs 32 and 33 so that a system can be obtained which has low critical natural frequencies at a small sag of the supporting springs as a result of the static load.
  • this pre-stress is made adjustable.
  • the invention may likewise be used advantageously in machines, in which the axis of rotation of the components to be rotated is vertical.
  • An example hereof is a domestic spin-drier for removing liquid from washing.
  • the drum must preferably have a speed of at least 3000 rpm. when the drum has an average diameter of at least cms.
  • An example of such a spin-drying machine using the invention is diagrammatically shown in FIGURE 8 as a longitudinal cross-sectional view, and in FIGURE 9 which is a cross-sectional view taken on the line AA in FIGURE 8.
  • the machine comprises a cylindrical housing 101 preferably manufactured from sheet steel having a steel bottom 102 and at its top a cover 103.
  • Said housing comprises a drum 104 having a vertical axis of rotation, which drum is preferably manufactured from perforated stainless steel plate. Said drum is driven by a motor 105 arranged below said drum through the motor shaft 106 which is directly connected to the drum 104.
  • the motor shaft 106 and the drum 104 have a common centre line 107.
  • the motor shaft is journalled in ball-bearings 108 which are arranged in a bushing 109 rigidly secured to the housing of the motor.
  • the motor 105 with the drum 104 secured thereto are resiliently supported in the vertical direction by a rubber spring 110 which engages the bottom 102 of the housing and which is arranged in the centre line 107 and on which the motor housing bears, and in the horizontal direction by three identical rubber rings 111 having the shape of a loop which are arranged at regular mutual angular distances at one end to the housing 101 and at the other end to the bearing bushing 109.
  • the rubber spring which in this example is the resilient element which for the greater part supports the weight of the supported component in the static condition, may have a rectangular or circular cross-section. On its upper and lower sides it is provided with steel plates 112 secured thereto by vulcanisation for securing purposes at one end to the bottom 102 and at the other to the housing of the motor 105.
  • the spring 110 which for the same reasons as described for the first embodiment is again manufactured preferably from butyl rubber is proportioned so and the rings 111 are chosen and arranged so that the resiliently supported system has a natural frequency in the vertical direction of approximately and preferably not more than 10 cycles per second, while in two mutually perpendicular horizontal directions, the natural frequencies preferably do not exceed 4 cycles per second.
  • a suspension system for a rotatable drum apparatus comprising a frame means, a rotatable drum having a central axis vertically positioned in said frame, a motor for rotating said drum; shaft means interconnecting said motor and said drum, said shaft being aligned with said central vertical axis of said drum and being rotatable with said drum, rigid bushing means for supporting said shaft and damping means for reducing movement of said drum, motor, shaft, and bushing means in horizontal and Vertical directions with respect to said frame, said damping means comprising a resilient rubber element coupled to said motor and said frame, said resilient rubber element having a central axis coincident with the central axis of said shaft and said drum; and a plurality of elastic bands engaging said bushing and said frame, said elastic bands and said resilient rubber element defining an elastic system having an elastic center located on said central axis of said shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Drying Of Solid Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US564616A 1965-07-17 1966-07-12 Resilient supports for rotating machine parts Expired - Lifetime US3389881A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6509288A NL6509288A (es) 1965-07-17 1965-07-17

Publications (1)

Publication Number Publication Date
US3389881A true US3389881A (en) 1968-06-25

Family

ID=19793668

Family Applications (1)

Application Number Title Priority Date Filing Date
US564616A Expired - Lifetime US3389881A (en) 1965-07-17 1966-07-12 Resilient supports for rotating machine parts

Country Status (8)

Country Link
US (1) US3389881A (es)
AT (1) AT280195B (es)
BE (1) BE684258A (es)
CH (1) CH451065A (es)
DE (1) DE6609011U (es)
DK (1) DK114473B (es)
ES (1) ES329141A1 (es)
GB (1) GB1157964A (es)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833280A (en) * 1972-11-13 1974-09-03 Ibm Automatic storage apparatus
US20040123631A1 (en) * 2002-12-27 2004-07-01 Jae-Won Chang Drum type washing machine
WO2004072350A2 (en) 2003-02-17 2004-08-26 Lg Electronics Inc. Drum type washing machine
US20040244436A1 (en) * 2003-03-26 2004-12-09 Park Gwan Ryong Damper mounting structure for washing machine
US20050190641A1 (en) * 2004-02-28 2005-09-01 Countz John W. Method and system for mixing fingernail polish
US20060016228A1 (en) * 2004-07-20 2006-01-26 Lg Electronics Inc. Drum type washing machine and bearing housing structure thereof
WO2008031775A1 (de) * 2006-09-11 2008-03-20 Gea Westfalia Separator Gmbh Zentrifuge mit einem rotor mit horizontaler drehachse
US20090044574A1 (en) * 2005-09-30 2009-02-19 Lg Electronics Inc. Drum-type washing machine
CN100552115C (zh) * 2004-08-06 2009-10-21 乐金电子(天津)电器有限公司 滚筒洗衣机
US20100018261A1 (en) * 2002-12-27 2010-01-28 Jae Won Chang Drum type washing machine
US7827834B2 (en) 2005-09-30 2010-11-09 Lg Electronics Inc. Bearing housing assembly of drum-type washing machine and drum-type washing machine with the same
USRE43625E1 (en) 2006-03-29 2012-09-04 Lg Electronics Inc. Drum type washing machine
US10400379B2 (en) * 2015-03-16 2019-09-03 Lg Electronics Inc. Laundry processing apparatus
US12023688B2 (en) 2018-08-08 2024-07-02 Gea Mechanical Equipment Gmbh Solid bowl screw centrifuge

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544536C2 (de) * 1975-10-04 1985-05-23 Karl 7298 Loßburg Hehl Vorrichtung zur schwingungsdämpfenden Befestigung einer aus Pumpe und Antriebsmotor bestehenden Einheit
NL8600451A (nl) * 1986-02-24 1987-09-16 Philips Nv Bevestigingsinrichting voor een aandrijfmotor in een elektrisch apparaat, zoals een platenspeler.
US5213301A (en) * 1991-12-17 1993-05-25 The Perkin-Elmer Corp. Suspension system for isolating vibrations
WO1993023663A1 (en) * 1992-05-14 1993-11-25 Mishport Pty. Ltd. Engine powered energy providing assemblies
DE19636496C2 (de) * 1996-09-09 2000-11-30 Bosch Gmbh Robert Federanordnung zur Lagerung eines an einem Trägerteil befestigten vibrations- oder stoßempfindlichen Gerätes in einem Gehäuse
DE19711079C2 (de) * 1997-03-18 1999-05-12 Georg Schlomka Elastische Halterung für schwingungsempfindliche bzw. schwingungsemittierende Baugruppen

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2078445A (en) * 1934-08-03 1937-04-27 Gen Motors Corp Resilient suspension for mechanical units
US2647591A (en) * 1949-10-01 1953-08-04 Gen Electric Vibration dampener
US2746569A (en) * 1951-11-28 1956-05-22 Gamble Skogmo Inc Snubbing mechanism for gyrating extractors
FR1166138A (fr) * 1957-01-16 1958-11-03 Suspension élastique pour moteur d'essoreuse ou application similaire et machines ainsi équipées
US3114705A (en) * 1962-08-20 1963-12-17 Gen Motors Corp Means for controlling the dampening of an elastically suspended rotating drum duringcentrifuging
DE1188513B (de) * 1959-12-28 1965-03-04 Clemens A Voigt Elastische Lagerung eines Wasch-Schleuder-Aggregats
US3268082A (en) * 1963-05-31 1966-08-23 Gen Motors Corp Domestic appliance

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2078445A (en) * 1934-08-03 1937-04-27 Gen Motors Corp Resilient suspension for mechanical units
US2647591A (en) * 1949-10-01 1953-08-04 Gen Electric Vibration dampener
US2746569A (en) * 1951-11-28 1956-05-22 Gamble Skogmo Inc Snubbing mechanism for gyrating extractors
FR1166138A (fr) * 1957-01-16 1958-11-03 Suspension élastique pour moteur d'essoreuse ou application similaire et machines ainsi équipées
DE1188513B (de) * 1959-12-28 1965-03-04 Clemens A Voigt Elastische Lagerung eines Wasch-Schleuder-Aggregats
US3114705A (en) * 1962-08-20 1963-12-17 Gen Motors Corp Means for controlling the dampening of an elastically suspended rotating drum duringcentrifuging
US3268082A (en) * 1963-05-31 1966-08-23 Gen Motors Corp Domestic appliance

Cited By (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833280A (en) * 1972-11-13 1974-09-03 Ibm Automatic storage apparatus
US8322170B2 (en) 2002-12-27 2012-12-04 Lg Electronics Inc. Drum-type washing machine
US20110094272A1 (en) * 2002-12-27 2011-04-28 Lg Electronics Inc. Drum type washing machine
US8336339B2 (en) 2002-12-27 2012-12-25 Lg Electronics Inc. Drum type washing machine
US8646292B2 (en) 2002-12-27 2014-02-11 Lg Electronics Inc. Drum type washing machine
US8646293B2 (en) 2002-12-27 2014-02-11 Lg Electronics Inc. Drum type washing machine
US8616027B2 (en) 2002-12-27 2013-12-31 Lg Electronics Inc. Drum type washing machine
US8387421B2 (en) 2002-12-27 2013-03-05 Lg Electronics Inc. Drum-type washing machine
US20060243003A1 (en) * 2002-12-27 2006-11-02 Jae-Won Chang Drum type washing machine
US8341983B2 (en) 2002-12-27 2013-01-01 Lg Electronics Inc. Drum-type washing machine
US20090071200A1 (en) * 2002-12-27 2009-03-19 Jae-Won Chang Drum type washing machine
US8671719B2 (en) 2002-12-27 2014-03-18 Lg Electronics Inc. Drum type washing machine
US8887537B2 (en) 2002-12-27 2014-11-18 Lg Electronics Inc. Drum-type washing machine
US8336340B2 (en) 2002-12-27 2012-12-25 Lg Electronics Inc. Drum-type washing machine
US7533548B2 (en) 2002-12-27 2009-05-19 Lg Electronics Inc. Drum type washing machine
US20040123631A1 (en) * 2002-12-27 2004-07-01 Jae-Won Chang Drum type washing machine
US8302434B2 (en) 2002-12-27 2012-11-06 Lg Electronics Inc. Drum-type washing machine
US7571625B2 (en) 2002-12-27 2009-08-11 Lg Electronics Inc. Drum type washing machine
US8156770B2 (en) 2002-12-27 2012-04-17 Lg Electronics, Inc. Drum type washing machine
US20100018261A1 (en) * 2002-12-27 2010-01-28 Jae Won Chang Drum type washing machine
US20100089101A1 (en) * 2002-12-27 2010-04-15 Jae-Won Chang Drum type washing machine
US20100089102A1 (en) * 2002-12-27 2010-04-15 Jae-Won Chang Drum type washing machine
US8087267B2 (en) 2002-12-27 2012-01-03 Lg Electronics Inc. Drum type washing machine
US7930910B2 (en) 2002-12-27 2011-04-26 Lg Electronics Inc. Drum type washing machine
AU2004212093B2 (en) * 2003-02-17 2009-07-23 Lg Electronics Inc. Drum type washing machine
US20050217323A1 (en) * 2003-02-17 2005-10-06 Lee Deug H Drum type washing machine
WO2004072350A3 (en) * 2003-02-17 2004-11-11 Lg Electronics Inc Drum type washing machine
WO2004072350A2 (en) 2003-02-17 2004-08-26 Lg Electronics Inc. Drum type washing machine
US20040244436A1 (en) * 2003-03-26 2004-12-09 Park Gwan Ryong Damper mounting structure for washing machine
US20050190641A1 (en) * 2004-02-28 2005-09-01 Countz John W. Method and system for mixing fingernail polish
US8726702B2 (en) 2004-07-20 2014-05-20 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US20080307833A1 (en) * 2004-07-20 2008-12-18 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8783072B2 (en) 2004-07-20 2014-07-22 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8434334B2 (en) 2004-07-20 2013-05-07 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8677787B2 (en) 2004-07-20 2014-03-25 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US7568366B2 (en) * 2004-07-20 2009-08-04 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US20100242550A1 (en) * 2004-07-20 2010-09-30 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8800326B2 (en) 2004-07-20 2014-08-12 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8887538B2 (en) 2004-07-20 2014-11-18 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US20070017261A1 (en) * 2004-07-20 2007-01-25 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8931312B2 (en) 2004-07-20 2015-01-13 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US20060016228A1 (en) * 2004-07-20 2006-01-26 Lg Electronics Inc. Drum type washing machine and bearing housing structure thereof
US8429938B2 (en) 2004-07-20 2013-04-30 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
CN100552115C (zh) * 2004-08-06 2009-10-21 乐金电子(天津)电器有限公司 滚筒洗衣机
US8671718B2 (en) 2005-09-30 2014-03-18 Lg Electronics Inc. Drum-type washing machine
US7827834B2 (en) 2005-09-30 2010-11-09 Lg Electronics Inc. Bearing housing assembly of drum-type washing machine and drum-type washing machine with the same
US20110041566A1 (en) * 2005-09-30 2011-02-24 Lg Electronics Inc. Drum-type washing machine
US20090044574A1 (en) * 2005-09-30 2009-02-19 Lg Electronics Inc. Drum-type washing machine
US7841220B2 (en) 2005-09-30 2010-11-30 Lg Electronics Inc. Drum-type washing machine
US8234890B2 (en) 2005-09-30 2012-08-07 Lg Electronics Inc. Drum-type washing machine
US8225628B2 (en) 2005-09-30 2012-07-24 Lg Electronics Inc. Drum-type washing machine
US8220294B2 (en) 2005-09-30 2012-07-17 Lg Electronics Inc. Drum-type washing machine
USRE44674E1 (en) 2006-03-29 2013-12-31 Lg Electronics Inc. Drum type washing machine
USRE44028E1 (en) 2006-03-29 2013-02-26 Lg Electronics Inc. Drum type washing machine
USRE44511E1 (en) 2006-03-29 2013-10-01 Lg Electronics Inc. Drum type washing machine
USRE44795E1 (en) 2006-03-29 2014-03-11 Lg Electronics Inc. Drum type washing machine
USRE43625E1 (en) 2006-03-29 2012-09-04 Lg Electronics Inc. Drum type washing machine
WO2008031775A1 (de) * 2006-09-11 2008-03-20 Gea Westfalia Separator Gmbh Zentrifuge mit einem rotor mit horizontaler drehachse
US20100167902A1 (en) * 2006-09-11 2010-07-01 Gea Westfalia Separator Gmbh Centrifuge having a rotor having horizontal axis of rotation
US8465406B2 (en) 2006-09-11 2013-06-18 Westfalia Separator Gmbh Centrifuge including a frame and a bearing device having a pair of cantilevers and a pair of spring elements located between the cantilevers and the frame
US10400379B2 (en) * 2015-03-16 2019-09-03 Lg Electronics Inc. Laundry processing apparatus
US12023688B2 (en) 2018-08-08 2024-07-02 Gea Mechanical Equipment Gmbh Solid bowl screw centrifuge

Also Published As

Publication number Publication date
ES329141A1 (es) 1967-05-01
DE6609011U (de) 1972-01-20
GB1157964A (en) 1969-07-09
DK114473B (da) 1969-07-07
BE684258A (es) 1967-01-16
AT280195B (de) 1970-04-10
CH451065A (de) 1968-05-15

Similar Documents

Publication Publication Date Title
US3389881A (en) Resilient supports for rotating machine parts
US3509742A (en) Supporting structure for a washing machine
US2526048A (en) Vibration damping device for laundry machines
US3197983A (en) Resilient support for rotor assembly
CN103103718A (zh) 滚筒洗衣机
US3089326A (en) Washing machine
US5924312A (en) Multiple direction vibration absorber
CN101413199B (zh) 滚筒式洗衣机
EP1529868A2 (en) Drum type washing machine
US3268082A (en) Domestic appliance
US3385541A (en) Resilient supports for rotating machine parts
US2583579A (en) Machine suspension
US3321940A (en) Rod suspension for clothes washing apparatus
US5887455A (en) Washing machine
US3090586A (en) Machine mounting
CN108866944B (zh) 一种洗衣机减振吸振装置及滚筒洗衣机
US2836993A (en) Washing machines
US2692681A (en) Centrifuge support
US2466153A (en) Stabilizer for washing machines
KR200157097Y1 (ko) 드럼 세탁기용 진동 흡수 장치
US3262661A (en) Damping system for washing machines
MX2010008143A (es) Sistema de suspension para lavadoras.
US3939674A (en) Suspension mounting assembly for automatic washers
US2614410A (en) Washing machine provided with vibration dampener and mounting
BRPI0901779A2 (pt) arranjo de suspensão para máquina lavadora de roupas