US3509742A - Supporting structure for a washing machine - Google Patents

Supporting structure for a washing machine Download PDF

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Publication number
US3509742A
US3509742A US671785A US3509742DA US3509742A US 3509742 A US3509742 A US 3509742A US 671785 A US671785 A US 671785A US 3509742D A US3509742D A US 3509742DA US 3509742 A US3509742 A US 3509742A
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base
machine
housing
machine unit
spring legs
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US671785A
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Fritz Bauer
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22Mountings, 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

Definitions

  • the "first type consisted of different structures for suspending the washing machine unit by springs from a suitable frame. Although such suspension means are very suitable for taking up the oscillations since they permit the machine unit to swing freely and to carry out its natural oscillating motions, they are not very desirable since they require a very heavy and expensive frame of a considerable height. Because of this height, the oscillation forces are also transmitted to the base by a very long lever arm.
  • the third and so far the best solution of resi iently supporting the oscillating system of a washing machine consists in supporting it only by means of at least three spring legs on the base plate or base frame. The system is then no longer restrained but may swing freely. The importance of this may best be seen by oscillation diagrams which show that the oscillating path is no longer circular but substantially elliptical. It is of extreme importance that the oscillating system will be capable of carrying out such an elliptical motion and will not be restrained by additional connecting links to a circular path.
  • vibration damping means in the form of mechanical, hydraulic or pneumatic vibration dampers in addition to the supporting springs.
  • vibration dampers are therefore also usually provided in connection with a resilient support by means of spring legs.
  • the two spring legs should, however, not be connected at any arbitrary points to the machine housing but in positions which are located substantially within the plane of the center of gravity of the machine unit, hereafter simply called the gravity plane.
  • the points of connection do not have to be located exactly Within this plane but may be located at a short distance before or behind it, as seen in the axial direction of the machine housing, provided this distance is not made so large as to render the system unstable.
  • the most suitable position on the machine housing to which the spring legs are to be connected may be easily determined by a simple test on each first model or prototype of a washing machine of this kind.
  • the supporting structuxe according to the invention has to have an additional feature which consists in mounting the spring legs at an oblique angle to the perpendicular plane so that the extensions of their axes intersect within the gravity plane.
  • the resilient supporting structure according to the invention has the great advantage over all other suspension and supporting structures which have previously been developed especially for washing machines with high-speed spinning gears that it not only is of a much greater simplicity of construction, one which can hardly be surpassed, but especially that it results in a quietness and steadiness of operation of the machine which is even considerably better than that of a machine which is freely oscillating by being supported on at lea-st three spring legs.
  • vibration damping means As in other resilient supporting structures, it may be advisable and in certain cases even necessary also to provide the two-leg support according to the invention with vibration damping means. It has, however, been found that a single vibration damper will generally be sufficient and that it is immaterial whether it is of a mechanical, hydraulic or pneumatic type.
  • the location and arrangement of the vibration damper relative to the machine unit is of considerable importance. Since contrary to a three or four-leg support as previously employed only two spring legs participate in each oscillating movement of the machine unit, the oscillating system is relatively yielding within the plane of the two spring legs so that the oscillation ellipse has a relatively long axis. Accord in-g'to the invention it is therefore advisable to mount the vibration damper and connect it to the machine unit at such an angle that its maximum damping effect will extend in the direction of the long axis of oscillations. Although the vibration damper could be built directly into at least one of the spring legs, it is more advisable for the reasons as already stated to provide it as a separate component which is mounted at an angle as prescribed above. This, however, does not exclude the possibility of providing an additional vibration damper within at least one of the spring legs, preferably in the form of a friction damper which may be easily installed therein and will then result in an increased damping of the oscillations.
  • each spring leg is pivotably mounted on the machine housing by means of a-ball-and-socket connection and is connected to the machine base by one or two rubber blocks, and that the machine unit will then swing toward one side within the plane of the spring legs, that is, within the gravity plane of the machine unit, the rubber blocks will then be compressed and tend to return the stored energy as a resetting force.
  • This resetting force is, of course, increased if both ends of each spring leg are clamped in rubber blocks.
  • centering springs for example, in the form of leaf springs, which may be relatively soft and act directly upon the machine housing within the plane of oscillation, while their lower ends are secured to the machine base.
  • centering springs are not only more expensive but they also do not seem to have any particular advantage over the use of rubber blocks for mounting the spring legs.
  • each spring leg should preferably be mounted in such a manner that each spring leg can also carry out a kind of wobbling motion which under certain operating conditions may be caused by an imbalance of the machine unit.
  • the machine unit should therefore also have a certain resilience n the axial direction of its drum since a rigid mounting in this direction may easily lead to excessive stresses.
  • the oscillating system is composed of the washer drum which revolves at a high speed, the housing containing this drum, and the driving motor, the transmission gear, and other parts which are mounted on this housing
  • a gravity plane may be determined within which or closely adjacent to which the spring legs should be located.
  • the laundry within the drum forms an eccentric mass. If the washing machine is constructed so that this eccentric mass will likewise be located within the gravity plane, the axis of the drum will move during each oscillation substantially parallel to its normal position along a circle or an ellipse. This applies substantially to a machine which is filled through an opening in its peripheral wall. In such a machine, the vibration damper would therefore have to be mounted within or closely adjacent to the gravity plane.
  • the washing machine If the washing machine is to be filled through an opening in one of its end walls, it will be more likely that the laundry will be accumulated in the vicinity of this end wall and that the eccentric weight will be displaced from the gravity plane toward the front.
  • the axis of the machine unit will then not carry out a movement parallel to its normal position but a conical movement. In such a case it will therefore be necessary also to mount the vibration damper in front of the gravity plane since it then has not only the purpose to take up the actual oscillations of the machine but the conical movement as well.
  • the opposite conditions apply if the machine is designed so that an accumulation of the laundry may be expected behind the gravity plane.
  • the vibration damper would then have to be connected to the machine housing behind the gravity plane.
  • the machine unit which is supported by two spring legs is not supported in the direction of the drum axis, that is, transversely to the plane of the spring legs, it might be able to oscillate in this direction around the lower connecting points of the spring legs. It could pivot, for example, in the direction toward the rear wall of the housing when the laundry is filled into the drum. This would generally not be a serious disadvantage since a buffer could be provided on the rear wall of the housing on which the drum may engage. This will, however, also be unnecessary if the ends of the spring legs are clamped between rubber blocks since these blocks may also be deformed in the direction parallel to the axis of the drum and will therefore counteract a swinging of the housing in the axial direction of the drum.
  • the oscillating machine unit is supported on at least three points on the machine base by each of two spring legs so as to be freely oscillatable. At least one of these points is connected to the swinging machine unit, while the two other points are spaced from each other in the direction parallel to the axis of the drum and are connected to the machine base.
  • each spring leg is pivotably connected to the machine unit, while its lower end is connected to the machine base but at two points which are laterally spaced from each other in a direction parallel to the axis of the drum and are resiliently connected to the machine base.
  • the particular construction of this connection is of secondary importance, provided the machine unit can still carry out freely its natural oscillating motion.
  • each of the two spring legs which is mounted at three points acts like one which is connected at only two points. The new effect occurs when the machine unit moves in the direction of the drum axis.
  • each spring leg will generally be adequate. In certain cases it may, however, be necessary also to mount the upper end of each spring leg at two points which are spaced from each other in the axial direction of the drum. Since near the point of connection of each spring leg to the machine housing the same kind of forces are produced as at its point of connection to the machine base, the stabilizing effect of the spring legs will be further increased.
  • the usually most suitable arrangement of the two spring legs relative to the machine unit is the symmetrical arrangement in which the spring legs are located and connected to the machine housing substantially within a central plane of the latter which extends at a right angle to the axis of the drum.
  • This is by no means the only suitable arrangement since there may be cases in which it is more advisable to mount the two spring legs within two different planes which extend parallel to the central plane so that one spring leg is located in front of the central plane, as seen from the inlet side of the drum, while the other spring leg is located behind the central plane.
  • This arrangement may be preferred over the symmetrical arrangement especially when it is to be expected that the laundry will not be distributed substantially equally at both sides of the central plane but be located more toward one end wall or the other so that certain transverse forces will be produced which may result in a wobbling motion of the machine unit.
  • By offsetting the two spring legs relative to the central plane it is possible to counteract such wobbling movements very effectively.
  • each spring leg may be formed by rubber elements which are clamped by separate bolts between the machine base and the lower end of the spring leg.
  • a more simple and effective construction consists, however, in providing the two connecting points at both sides of the central axis of each spring leg in the form of one continuous elongated rubber block or, according to a modification of the invention, in the form of two superimposed elongated rubber blocks.
  • FIG. 1 shows a side view of a washing machine with a supporting structure according to the invention
  • FIG. 2 shows a front view thereof
  • FIG. 3 shows a front view of a washing machine similar to that as shown in FIGURE 2 with a supporting structure according to a modification of the invention
  • FIG. 4 shows a side view similar to FIG. 1 of a washing machine with a supporting structure according to a further modification of the invention
  • FIG. 5 shows an enlarged view of the lower end of a Spring leg according to FIG. 4 and of the resilient supporting means thereof;
  • FIG. 6 shows, partly in cross section, a further modification of the upper end lower parts of a spring leg and their resilient supporting means
  • FIG. 7 shows a perspective view of a modification of a structural detail of the device as shown in FIG. 6.
  • the washing machine as illustrated diagrammatically consists of a machine unit comprising a housing 1 in which a drum (not shown) is rotatably mounted, an electric motor 2 which is mounted on the housing 1, and a V- belt drive 3 for driving the drum within the housing about a normally horizontal axis as indicated by the line 4.
  • This washing machine is of a conventional type wherein the drum is adapted to be filled with laundry when a hinged cover on one end wall of housing 1 is opened.
  • this machine unit is resiliently supported by only two telescopic spring legs 7 and 8 on a base 5 which may consist of a plate or frame and may be provided with adjustable feet 6. As shown particularly in FIG.
  • the two telescopic spring legs 7 and 8 are located within the same vertical plane which is determined by the plane S of the center of gravity of the machine unit 1 to 3 which may be easily ascertained by suspending this unit on a hook and by shifting the point of connection of this hook to the housing 1 until it is in a state of balance and its axis extends horizontally.
  • this operation needs to be carried out only once on a prototype of the particular machine model since the structural details of the machines which are built thereafter will remain the same. In the washing machine as actually used, the suspension hook is therefore omitted.
  • the spring legs 7 and 8 are therefore located and connected to housing 1 within this plane S or vertically to the horizontal base 5 but are inclined thereto at an angle or so that the extensions 7' and 8' of the axes of these spring legs 7 and 8 intersect at a point P within the plane S above the machine housing 1.
  • the resetting force which tends to return the machine unit during its oscillating movement to its normal position in which the central axial plane of housing 1 extends horizontally and at a fixed distance from the base 5 is produced by the resilience of rubber blocks 10 and 11 which connect the opposite ends of spring legs 7 and 8 to the housing 1 and base 5.
  • the upper ends of spring legs 7 and 8 are mounted on rubber blocks 10 which, in turn, are secured to brackets 12 which are welded to housing 1, while the lower ends of the spring legs are mounted on rubber blocks 11 which, in turn, are connected to brackets 13 on the base 5.
  • the machine unit 1 to 3 is supported by a vibration damper 15 of any suitable type and construction which is pivotably connected to the housing 1 at a point 16 and to the base 5 at the point 14.
  • a vibration damper 15 of any suitable type and construction which is pivotably connected to the housing 1 at a point 16 and to the base 5 at the point 14.
  • no rubber blocks are provided as on the spring legs, but link pins with a rubber lining.
  • the machine unit may yield easily on the general direction of the arrow F since there are no further supporting means except those within the gravity plane.
  • the ellipse of oscillation therefore has a relatively long axes in this general direction.
  • the vibration damper 15 is connected to the housing 1 and the base 5 so as to be inclined to the latter at an angle 6 which is smaller than the angle a. If the damping force is divided into a horizontal component and a vertical component, it is possible by making the angle I ⁇ 3 of a suitable size to produce a greater damping effect in the direction of the arrow F than vertically thereto. It would be inadvisable to extend the vibration damper too much in accordance with the long axis of the ellipse since the component which extends vertically thereto and should likewise contribute to the damping action would then be too small.
  • FIG. 3 illustrates a machine unit similar to that as shown in FIGS. 1 and 2 which, however, is provided with a difierent supporting structure insofar as the spring legs are pivotably connected to the housing 1 and to the base 5 by ball-and-socket joints 17 and 18 and the resilient resetting or centering means are not provided in the form of rubber blocks or the like on the spring legs themselves but in the form of leaf springs 19 and 20 the lower ends of which are secured to the base 5, while their upper ends act upon the opposite sides of housing 1.
  • the vibration damper as shown in FIGS. 1 and 2 has in this case been omitted so as to indicate that the new supporting system is not absolutely dependent upon the presence of a vibration damper, although generally it is advisable and may sometimes even be necessary to provide it.
  • FIGS. 4 to 7 The further embodiment of the invention as illustrated in FIGS. 4 to 7 is designed according to the same principles as the embodiment according to FIGS. 1 and 2, although. it diifers structurally therefrom by the fact that the lower ends of the spring legs 7 and 8 are supported at two points A and B which are spaced at a distance a from each other, as indicated in FIG. 4, only diagrammatically by dotted lines. If connecting lines are drawn between the points A and B and the clamped upper end of each spring leg, a triangle is formed. The machine unit is therefore no longer supported merely on straight legs at two points but so-tospeak on triangular supports and can therefore tilt only if its center of gravity swings beyond one of the points A or B which can occur only under unusual operating conditions. As long as during the oscillatory movements of the machine unit its center of gravity does not swing beyond one of the points A or B, it will after each of these movements be automatically returned to its original central position.
  • each spring leg 7 and 8 must be connected to the base 5 so as to permit the machine unit to oscillate freely.
  • the two points of connection of the lower end of each spring leg to the base 5 are formed by two pairs of rubber bushes 26, 27 and 2-8, 29 which are inserted between a plate 30 which is secured to the part 31 of the spring leg by a nut 36, a plate 32 on the bracket 13 which is secured to the base 5, and a further plate 33 and are clamped together with these plates by bolts and nuts 34 and 35.
  • FIG. 5 therefore forms a threepoint support of the oscillating machine unit by each of two spring legs.
  • FIG. 6 illustrates a further improvement of this supporting device which consists in replacing the three screwed connections 34, 35, and 36 by a single nut 37 which is screwed upon the threaded end 38 of the part 31 of the spring leg, and in replacing the separate rubber bushes 26, 28 and 27, 29 by two elongated rubber blocks 39 and 40 which are of a substantially rectangular shape and extend substantially parallel to the axis of housing 1.
  • the support on two separate surfaces according to FIG. 5 is replaced in FIG. 6 by a support on two surfaces which are located at both sides of the axis of the spring leg.
  • each spring leg 6 is, however, equal in principle insofar as the lines A and B extend through the centers of the two support points and are spaced at a distance a from each other.
  • the lower end of each spring leg is therefore again mounted so that a triangular support is formed as previously described with reference to FIG. 4.
  • the device according to FIG. 6 has the special advantage that the relatively large rubber blocks have a greater deformation capacity.
  • the supporting device according to FIG. 6 is composed of a pair of plates 41 and 42 on the part 31 of the spring leg which clamp the two elongated rubber blocks 38 and 39 together and against the opposite sides of the part 32 of the bracket 13 by means of a nut 37 which is screwed upon the threaded end 38 of the part 31 of the spring leg. Since there is only one screw connection 37, 38 for securing the spring leg including the rubber blocks 39 and 40 to the bracket 13 on the base 5, the device according to FIG. 6 may be more easily assembled than the device according to FIG. 5
  • the rubber blocks 39 and 40 according to FIG. 6 are further provided with projections 43 which engage into corresponding recesses in the plates 41 and 42 and in the bracket part 32 of the base 5.
  • the different parts are thus nonrotatably connected to each other and therefore cannot shift relative to each other while being assembled.
  • FIG. 7 Another manner of nonrotatably securing these parts to each other is illustrated in FIG. 7.
  • plate 41 is made of a U-shaped cross section and thus provided with lateral webs 44, while on the part 31 of the spring leg a hexagonal part is secured the opposite surfaces of which are spaced from each other at a distance substantially equal to the distance between the webs 44.
  • the hexagonal part 45 is inserted between the webs 44 on plate 41, the part 31 of the spring legs is prevented from turning relative to plate 41 and thus also relative to the rubber blocks 39' and 40' and bracket 13 which is rigidly secured to or forms a part of the base 5.
  • both spring legs 7 and 8- so as not to extend within the gravity plane S, as shown in FIG. 1, but at a small distance from the opposite sides of this plane so that, for example, the spring leg 7 will be located more toward the front wall and the other spring leg 8 more toward the rear wall of the housing 1.
  • a resilient supporting structure for an unrestrained oscillating washing machine unit comprising a housing, a drum rotatably mounted in said housing and having a normally horizontal axis, and means for driving said drum, said supporting structure comprising a base and only two telescopic spring legs connected at their opposite ends to opposite lateral sides of said housing and to said base and extending closely adjacent and substantially parallel to a vertical plane passing through the center of gravity of said unit and being inclined relative to said leg at least to said base so as to be movable in all directions relative to said base.
  • each telescopic spring leg comprises a threaded lower end portion, a plate mounted to said end portion, at a distance from its lower extremity, and resilient means comprising at least one elongated rubber block extending to the opposite sides of the axis of said telescopic spring leg and having a substantially central aperture, said threaded end portion extending through said aperture and through an aperture in a flat part of said base, said threaded end portion further including a nut for clamping said rubber block between said plate and said base.
  • said resilient means comprise a pair of said elongated rubber blocks on the upper and lower sides of said flat base part, said threaded end portion of said telescoping spring leg extending through said apertures in said rubber blocks and in said base part, a second plate on the lower side of said base part, and a nut on said threaded end portion for clamping said rubber blocks between said plates to said base point.
  • a supporting structure as defined in claim 7 further comprising a polygonal member secured to said threaded lower end portion, said first plate having wall portions projecting from the upper side thereof, said polygonal member adapted to engage between said wall portions so as to prevent said telescopic spring leg from turning about its axis relative to said base.
  • a supporting structure as defined in claim 1, wherein said resetting means comprise leaf springs each secured at one end to said base and at the other end acting upon said housing.
  • a supporting structure as defined in claim 1 further comprising at least one vibrator damper connected to said housing and to said base and having an axis extending at a smaller angle to said base than the axis of each of said telescopic spring legs.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
US671785A 1966-10-05 1967-09-29 Supporting structure for a washing machine Expired - Lifetime US3509742A (en)

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DES0106369 1966-10-05
DES0109678 1967-04-29

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FR (1) FR1577234A (enrdf_load_stackoverflow)
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US3703091A (en) * 1971-03-18 1972-11-21 Hoover Co Centrifugal extraction machines
US3863902A (en) * 1973-03-26 1975-02-04 Chicago Bridge & Iron Co Flexible linkage wheel supported rotatable drum
US4015715A (en) * 1974-01-23 1977-04-05 The United States Of America As Represented By The Secretary Of The Navy Stable platform shipping container
US4071961A (en) * 1971-07-23 1978-02-07 Braunschweigische Maschinenbauanstalt Drying drum for fluid materials
US4079882A (en) * 1977-03-18 1978-03-21 Kabushiki Kaisha Kubota Seisakusho Vibration-isolating apparatus for a centrifuge
US4170098A (en) * 1977-08-02 1979-10-09 Castro Mario J M Apparatus for harvesting sugar cane
USD256192S (en) 1978-08-03 1980-08-05 Game Time, Inc. Park bench with spring support
US4343452A (en) * 1978-08-30 1982-08-10 Suspa Federungstechnik Fritz Bauer & Shone Ohg Spring support strut for drum-type washing machine
US4351515A (en) * 1979-07-02 1982-09-28 Toyota Jidosha Kogyo Kabushiki Kaisha Feedback control type shock absorbing suspension system
US4664156A (en) * 1985-01-31 1987-05-12 Lindauer Dornier Gesellschaft Mbh Device for isolating vibrations of heavy equipment
US4709860A (en) * 1984-05-31 1987-12-01 Omni Spray, Inc. System for applying pesticides without drift
US4836099A (en) * 1987-02-05 1989-06-06 Pierre Thirode Device for pickling meat by mixing under vacuum
US4991412A (en) * 1982-10-12 1991-02-12 Fritz Bauer & Shone Ohg Oscillatory support for drum washing machines
US5248132A (en) * 1989-12-30 1993-09-28 Samsung Electronics Co., Ltd. Air spring structure free from the shakes of a suspended rotator
US5289703A (en) * 1989-06-16 1994-03-01 Mitsubishi Jukogyo Kabushiki Kaisha Drum type washing machine
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US5907880A (en) * 1997-05-15 1999-06-01 Electrolux Zanussi S.P.A. Method for providing active damping of the vibrations generated by the washing assembly of washing machines and washing machine implementing said method
WO2000068488A1 (de) * 1999-05-07 2000-11-16 Suspa Holding Gmbh Anlenk-vorrichtung zur anlenkung eines reibungsdämpfers an einem maschinengestell einer waschmaschine
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US20040123631A1 (en) * 2002-12-27 2004-07-01 Jae-Won Chang Drum type washing machine
US20040244436A1 (en) * 2003-03-26 2004-12-09 Park Gwan Ryong Damper mounting structure for washing machine
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US20060053838A1 (en) * 2004-09-13 2006-03-16 Matsushita Electric Industrial Co., Ltd. Drum type washing machine
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US20080295545A1 (en) * 2007-05-29 2008-12-04 Lg Electronics Inc. Dynamic Vibration Absorber
US20080307833A1 (en) * 2004-07-20 2008-12-18 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US20090044574A1 (en) * 2005-09-30 2009-02-19 Lg Electronics Inc. Drum-type washing machine
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
WO2010137893A3 (en) * 2009-05-28 2011-01-27 Lg Electronics Inc. Laundry machine
US20110214455A1 (en) * 2010-03-08 2011-09-08 Kabushiki Kaisha Toshiba Vibration control device for washing machine
US20120060350A1 (en) * 2009-05-28 2012-03-15 Kwon Ig Geun Manufacturing method of laundry machine
JP2012170684A (ja) * 2011-02-23 2012-09-10 Panasonic Corp ドラム式洗濯機
JP2012170678A (ja) * 2011-02-23 2012-09-10 Panasonic Corp ドラム式洗濯機
US8800165B2 (en) 2009-05-28 2014-08-12 Lg Electronics Inc. Laundry machine having a drying function
EP2843097A1 (en) * 2013-08-27 2015-03-04 Panasonic Corporation Front-loading-type washing machine
JP2015043801A (ja) * 2013-08-27 2015-03-12 パナソニックIpマネジメント株式会社 ドラム式洗濯機
US9051679B2 (en) 2009-05-28 2015-06-09 Lg Electronics Inc. Laundry machine
US9103063B2 (en) 2009-05-28 2015-08-11 Lg Electronics Inc. Laundry machine with suspension assembly
US9284677B2 (en) 2009-05-28 2016-03-15 Lg Electronics Inc. Laundry machine
US9447534B2 (en) 2008-12-30 2016-09-20 Lg Electronics Inc. Laundry machine
US9828715B2 (en) 2009-05-28 2017-11-28 Lg Electronics Inc. Laundry maching having a drying function

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GB1355177A (en) * 1970-03-02 1974-06-05 Hoover Ltd Wash and or centrifugal extraction machines
GB1390498A (en) * 1971-04-16 1975-04-16 Hoover Ltd Washing machines
US3729960A (en) * 1971-12-27 1973-05-01 Whirlpool Co Leaf spring suspension for automatic washer
NZ207317A (en) * 1984-02-29 1987-06-30 Fisher & Paykel Resilient mounting for washing machine
DE3604286A1 (de) * 1985-03-26 1986-10-09 Fritz Bauer + Söhne oHG, 8503 Altdorf Reibungsdaempfer, insbesondere fuer waschmaschinen mit schleudergang

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