US3178916A - Machine for washing and centrifuging textile - Google Patents

Machine for washing and centrifuging textile Download PDF

Info

Publication number
US3178916A
US3178916A US260646A US26064663A US3178916A US 3178916 A US3178916 A US 3178916A US 260646 A US260646 A US 260646A US 26064663 A US26064663 A US 26064663A US 3178916 A US3178916 A US 3178916A
Authority
US
United States
Prior art keywords
masses
drum
washing
compartment
speed
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
US260646A
Other languages
English (en)
Inventor
Belaieff James Frank
Berthier Jacques Michel
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.)
Frame SA
Original Assignee
Frame SA
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
Application filed by Frame SA filed Critical Frame SA
Application granted granted Critical
Publication of US3178916A publication Critical patent/US3178916A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • D06F37/225—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets

Definitions

  • This invention relates to machines for washing and centrifuging textile, comprising a rotary container with perforated walls, provided with a balancing device, which container is suspended on the frame or on the tub of the machine and has a rotary shaft which is positioned in one direction or the other, but preferably horizontally.
  • the balancing device is intended more particularly for a washing machine comprising a rotary drum with perforated walls which is displaceable in at least two directions at right angles to the frame of the machine, and the tub of which has an upwardly directed opening, the drum having, in addition, a little door fitted on its peripheral surface.
  • the present invention relates to a machine for washing and centrifuging textile, comprising a rotary container with perforated walls, provided with a balancing device having two closed compartments which are positioned symmetrically relative to the transverse plane of symmetry of the container and concentrically of its axis of rotation and which are rigidly connected to said container, and it is characterized in that each compartment of the balancing device contains at least two eccentric masses which can rotate freely about the axis of revolution of the container and in that each compartment is partly filled with a viscous liquid which constitutes a means for transferring the movement of the compartment to the said masses the driving action of which is greater at rotational speeds of the container which are almost equal to, but higher than its rotational speed during washing, than at rotational speeds of the container which are almost equal to, but lower than a so-called balancing rotational speed of the container, which speed itself is lower than the rotational speed during centrifuging.
  • FIG. 1 is an elevational view of such a machine equipped with the balancing device, several parts being omitted and others being shown in section;
  • FIG. 2 is a plan view of the machine shown in FIG. 1, in which likewise several parts are omitted and others shown in section;
  • FIG. 3 is a side view of a closed compartment of a first embodiment of the balancing device, several parts being omitted and others being shown in section;
  • FIG. 4 is a sectional view, taken on the line IVIV of FIG. 3.
  • FIG. 5 is a side view of a closed compartment of a second embodiment of the balancing device, several parts being omitted and others being shown in section;
  • FIG. 6 is a sectional view, taken on the line VI-VI of FIG. 5.
  • FIG. 7 is a side view of a closed compartment of a third embodiment of the balancing device, several parts being omitted and others being shown in section;
  • FIG. 8 is a sectional view, taken on the line VIII-VIII of FIG. 7;
  • FIG. 9 is an elevational view of the first embodiment, with the cover removed, of a closed compartment which illustrates the position of the balancing masses at the moment when driven through the liquid;
  • FIG. 10 is an elevational view of the first embodiment, with the cover removed, of a closed compartment which illustrates the position of the balancing masses when occupying their active balancing positions;
  • FIG. 11 is an elevational view of a variant, with the cover removed from the compartment, which illustrates the position of the masses when occupying their active balancing positions.
  • the washing machine shown comprises a rotary drum 1 with perforated walls, provided with a driving shaft 2, which is synonymous with its rotary shaft, which shaft 2 is placed horizontally and the ends of which are journalled in bearings 3 located outside a tub 4 of the washing machine.
  • Flexible connections 5 ensure the tightness of the tub 4 at the areas where the shaft 2 is passed through the walls.
  • the tub 4 is rigidly secured to a frame 6 of the washing machine, while the drum is mounted to be slidable relative to the frame 6, that is to say displaceable in at least two directions at right angles thereto, and is subject to the action of backsetting springs 7 and damping springs 8 which form the connections between the drum 7 and the frame 6 of the washing machine.
  • the tub 4 has, at the top, an opening which can be closed by means of a cover 9 hinged to the frame 6 of the washing machine.
  • the drum 1 has a door 10 giving access to the drum, which door is fitted on a peripheral surface 11 of the drum and serves to introduce and remove the washing into and out of the drum respectively.
  • the balancing device comprises two identical combinations of parts arranged one on each side of the drum.
  • Each combination comprises a closed compartment 12 which, in the example shown, is formed by a cover 13 which is rigidly secured to a side wall 14 of the drum 1.
  • the compartment 12 is arranged concentrically of the driving shaft 2 of the drum, which shaft is passed through it.
  • Outer ends 15 of the drawing shaft 2 are journalled in bearings 3 which are mechanically connected to the frame 6 of the washing machine.
  • Each of the closed compartments 12 contains at least two masses 16 located eccentrically of the driving shaft of the drum, each mass being rotatable about said shaft and immersed in a viscous liquid 17, for example oil, which partly fills the closed compartment 12. Said liquid constitutes a means of transferring the movement of the compartment to the balancing masses.
  • the balancing device thus comprises, on the one hand, two closed compartments 12 the envelopes or covers 13 of which are integral with the drum and, on the other hand masses 16 which are divided over said compartments and are rotatable about the driving shaft 2 of the drum and hence movable relative thereto.
  • each closed compartment 12 comprises a bottom formed directly by the side Wall 14 of the drum 1, and a cover or envelope 13 which is rigidly secured to said bottom,
  • This compartment has two openings (not shown) which are usually located diametrically in opposition and are closed, for example, by means of threaded caps. Said openings serve to fill and empty the compartment 12 with viscous liquid 17.
  • Each of the closed compartments 12 contains three masses 16 each having a radial arm 19 which is rotatable about the rotary shaft 2 of the drum 1.
  • Each of the three masses 16 is identical with the other two and thus has the same dimensions, the same weight, etc.
  • the three masses 16 are located in the same plane at right angles to the shaft 2 and thus are at an angle to one another in the rest position (-FIG. 3). It will be evident that for structural reasons, the radial arms 19 of the masses 16 are located in difierent planes to permit free rotation of the masses about the shaft 2.
  • the radial arms 19 rotate about the shaft 2 through slide bearings. It will be evident, however, that other types of bearings may be used as well, for example ball bearings or roller bearings, etc.
  • each of the masses 16 has the general form of a crown-shaped sector the external diameter of which is distinctly smaller (1 to 4 ems.) than the internal diameter of the compartment 12.
  • Each mass 16 has a damper 20 which is provided on one of its edges 21 and serves, on the one hand, to damp the impacts between the masses, especially upon stopping the drum 1 when the masses fall back to their rest position and on the other hand to prevent the edges of the masses 16 from adhering to one another due to the action of surface tensions of molecular films of liquid which might arise between said edges if they would not be mechanically maintained spaced apart.
  • Said dampers have a height of about 0.1 to 3 mms. and may be made of any arbitrary material, but especially suitable therefor are plastics since such materials form an acoustic as well as a mechanical damper because of their properties.
  • Each of the masses 16, has in addition, driving members which, in this example, are formed by one or more driving fins 22 which project from the largest diameter and have dimensions such that the outer edge of each fin lies in direct proximity of the circular inner surface 23 of the cover 13.
  • the weight of the masses 16 is determined as a function of the maximum value of the washing that must be capable of being balanced.
  • each mass is such that, if the masses are located in the compartment 12 in their operating position, channels 24 are formed between the inner side walls of the compartment and the sides of the masses.
  • the thickness a of the channels 24 determines, for a given filling liquid of the compartment with a given viscosity and at a given relative speed between the masses and the compartment, the driving force which, due to friction of the liquid and because of its resistance to flow, acts upon the masses 16 in order to set them into rotation when the drum passes from its rotational speed during washing to its rotational speed during centrifuging.
  • the distance b between the circular inner surface 23 of the compartment 12 and the outer edge of a mass 16 is such that, when the drum 1 and hence the compartment 12 are driven at a rotational speed which is sufiicient, but lower than the speed of centrifuging, the liquid in this compartment is already thrown against the wall 23 of the compartment due to centrifugal force and the masses 16 already come, at least in part, out of contact with said liquid.
  • the driving fins 22 are invariably immersed in the liquid in order to ensure that the masses are driven in synchronism with the compartment, although the masses then have great freedom of motion and can be displaced very rapidly at an angle, in order to compensate for any modification in the washing.
  • the drum rotates at its washing speed which usually lies between 45 and 55 rev/min. -At this washing speed, the driving forces transferred to the masses 16 by the liquid 17 present in the compartments 12 are not sufficient to impart rotation to the said masses. Thus, the compartment 12 rotates during washing, but the masses 16 remain in the positions shown in FIG. 3.
  • the channels between the masses 16 and the side walls of the compartment 12 have a cross-section sufficient to pass the amount of liquid corresponding to this speed of the drum, without any appreciable loss of power being involved.
  • the washing water is heated during washing so that the whole of the drum is brought to a high temperature of the order of 70 C. to C. Said heat-ing causes a decrease in the viscosity of the liquid 17 in the compartments 12 so that the driving forces resulting from friction of the masses 16 decreases still further.
  • the liquid 17 has regained its normal viscosity compatible with the driving of the masses 16.
  • the speed of the drum is comparatively low, for example lower than rev/min.
  • the geometrical axis of the drum lies between the center of gravity of the washing in the drum and the shaft about which the drum actually rotates. At these low speeds of revolution of the drum, the washing has a tendency to describe as large a periphery as possible.
  • the third phase of the acceleration of the drum, or balancing phase is reached and the masses rotatable about the shaft 2, which have great freedom of motion, move automatically and almost immediately the balancing position (FIGS. and 11) at which the centrifugal forces corresponding to the masses 16 compensate for the forces associated with the masses of washing.
  • the actual rotary shaft of the drum is thus synonymous with its geometrical axis and the masses 16 lie opposite the washing so that the centrifugal forces resulting therefrom are balanced.
  • the masses of washing soaked with water are divided regularly or symmetrically along the inner wall of the drum, the masses 16 are divided evenly, regularly or symmetrically around the driving shaft 2 from the moment when the masses are released, that is to say at the moment when the drum has reached its balancing speed.
  • the masses 16 are automatically placed opposite said masses so as to balance them.
  • a so-called stationary balancing is thus obtained whereby the centrifuged liquid 17 is thrown against the peripheral wall 23.
  • the masses 16 lie partly or wholly outside the liquid 17 so that the driving forces of the masses are highly decreased.
  • the fins 22, however, are still immersed in the liquid 17 and serve to maintain the masses 16 at the speed of the drum. The forces required therefore may be low since the masses are already in motion.
  • the drum Since the drum has two closed compartments provided with balancing masses, which compartments are located one on each side of the transverse plane of symmetry of the drum and at the same distance from this plane, the balancing obtained is substantially perfect. From then onwards, it is possible to drive the drum without a risk of damage to the bearings or dangerous actions upon the frame, at very high speeds of the order of from 700 to 1000 rev./min. in order to obtain eflicacious centrifuging of the washing. From this it follows that, after a short period of time, the user can stop the driving motor of the drum, open the door 10 and remove the washing therefrom which has been centrifuged sufficiently to be ironed without preliminary drying.
  • the tests carried out with such household washing machines have also shown that the second phase of the acceleration of the drum is reached after a few revolutions of the drum, which corresponds to a speed of the drum of, for example, 120 to 150 rev/min. allowance being made for its acceleration.
  • the third phase of acceleration or effective balancing phase is obtained at a speed of the drum of, for example, 200 to 300 rev./min. that is to say before the drum performs dangerous movements of deflection.
  • the dimension a of the channel 24, the distance b between the outer periphery of the masses and the peripheral surface 23 of the closed compartment, the viscosity and the amount of the liquid 17, and also the weight of the masses 16 are determinative of the driving forces of the masses. At any rate, these parameters must be matched so that said driving forces are not sufficient for driving the masses 16 when the drum 1 rotates at its washing speed. However, said driving forces must be sufficient for driving the masses 16 at a speed of the drum which is higher than, but almost equal to its washing speed, but which is lower than its balancing speed, in order to guarantee the driving of the masses, and must then fall off to a low value when the speed of the drum is almost equal to, but still lower than its balancing speed.
  • the amount of liquid 17 may be varied within certain limits and makes it possible to change inter alia the manner in which the masses fall back to their rest position when the drum is stopped.
  • the amount of liquid also permits of varying the value of the forces for maintaining the masses in rotation, since these forces are dependent upon the surface area of each of the masses 16 which is still immersed in the liquid during centrifuging.
  • the balancing device comprises only two balancing masses 16 and the dampers 20 are formed by impact edges, for example of plastic.
  • the balancing device comprises compartments 12 which are identical with those of the two embodiments already described, but the balancing masses have a difierent shape.
  • this third embodiment has compartments 12 each containing two masses 26 which are positioned side by side in the transverse direction of the compartment 12.
  • Each of the masses has a general semi-circular shape and an axle 27 with a bearing formed in it, which in the example shown is a ball or roller bearing 28, so that the mass can rotate about the driving shaft 2.
  • each of the masses 26 In the rest position shown in FIG. 7 and 8, the two masses 26 are located side by side in the lower portion of the compartment 12. Each of the masses also has a fin 22 which has a similar function to that in the first two embodiments.
  • the masses 26 occupy positions which are at an angle to one another dependent upon the positioning and the volume of the washing.
  • the operation of this embodiment of the device is similar to that of the other embodiments.
  • the amount of liquid 17 in a compartment 12 is distinctly less than in the other embodiments described and so this liquid finds itself, on being centrifuged, substantially within an annular channel 31 present between the wall 23 of the compartment and the outer edge of the masses 26 so that these masses are kept in rotation only by the driving forces corresponding to the fins 22.
  • one of the masses of each compartment could be matched so that, at the beginning of the acceleration of the drum, it is driven by higher driving forces than are the others.
  • one of the masses is thrown before the others and it is prevented that during the second phase of the acceleration of the drum during which the masses are arbitrarily spread, the two masses are in too closely adjacent angular positions so that the weight of the washing could be increased during a certain period of time when the said two masses would be located close to the masses of washing.
  • a preferred drive it is possible to provide, for example, a channel between the compartment and one of the masses which is narrower than that between the compartment and the other mass. It is necessary, however, that the dynamic effect of each mass of a compartment is the same.
  • the preferred drive of one mass with respect to the other could alternatively be obtained by means of different diameters of the masses, or by adding driving fins to only one of the masses.
  • the diameter and the shape of the cover 13 of the compartment 12 could be different, as well as the shape of the masses 16.
  • each of the described embodiments can have driving fins or not, insofar in the latter case the balancing masses are still in contact with the centrifuged liquid 17 in their balancing position.
  • the driving fins could have the form of protuberances, projections or other driving elements which are provided on the perphery of the masses and manufactured, for example, integrally therewith.
  • FIG. 11 illustrates a balancing device which has no driving fins 22.
  • the radius of curvature of the external peripheral surface of a mass is smaller than that of the peripheral surface 23 of the compartment, resulting in an arc the top of which remains immersed in the liquid 17 during centrifuging, even when the liquid is centrifuged.
  • a washing and centrifugal drying machine comprising a drum rotatable about an axis, means for rotating said drum at washing speed and at centrifuging speed, a closed compartment connected with said drum at each end thereof, each said compartments being positioned symmetrically relative to the transverse plane of symmetry of said drum and concentric with said axis, at least one pair of eccentric masses dimensioned to be freely moveable in each said compartment, means mounting said masses for free rotation about said axis within said compartments, and a viscous fluid only partly filling each said compartment, the quantity of said fluid being sufficient to submerge said masses substantially completely at said washing speed.
  • a washing and centrifuging machine according to claim 2 wherein said eccentric masses in the same compartment are in the same plane at right angles to the axis of rotation of the drum and are displaced at an angle relative to one another.
  • each balancing mass has an elastic damper separating each mass from its adjacent masses.
  • a washing and centrifugal drying machine comprising a drum, a shaft mounting said drum for rotation, means for driving said drum at washing speed and at centrifuging speed, a closed chamber at each end of said drum symmetrical relative to the transverse plane of symmetry of said drum and concentric with said shaft, at least one pair of eccentric masses in each said chamber dimensioned for free movement within said chamber and means mounting said masses for rotation about said shaft within said chambers, a viscous fluid in each said chamber for only partly filling said chamber, and said chamber and masses being dimensioned for substantially complete submersion of said masses in said fluid at the said washing speed of said drum and said masses being substantially completely free of said liquid at the said centrifugal speed of said drums.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
US260646A 1962-02-26 1963-02-25 Machine for washing and centrifuging textile Expired - Lifetime US3178916A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH236562A CH383911A (fr) 1962-02-26 1962-02-26 Machine à laver et à essorer le linge

Publications (1)

Publication Number Publication Date
US3178916A true US3178916A (en) 1965-04-20

Family

ID=4232077

Family Applications (1)

Application Number Title Priority Date Filing Date
US260646A Expired - Lifetime US3178916A (en) 1962-02-26 1963-02-25 Machine for washing and centrifuging textile

Country Status (5)

Country Link
US (1) US3178916A (da)
AT (1) AT239731B (da)
CH (1) CH383911A (da)
DK (1) DK104838C (da)
GB (1) GB1035033A (da)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3356222A (en) * 1965-04-20 1967-12-05 Frame Sa Locking and release mechanism for a washing machine balancing device
US5345792A (en) * 1992-12-28 1994-09-13 Whirlpool Corporation Balancer for an automatic washer
WO2003098070A1 (en) * 2002-05-22 2003-11-27 Dyson Technology Limited Automatic balancing device
US20040123631A1 (en) * 2002-12-27 2004-07-01 Jae-Won Chang Drum type washing machine
US20070017261A1 (en) * 2004-07-20 2007-01-25 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US20070074543A1 (en) * 2005-09-30 2007-04-05 Lg Electronics Inc. Bearing housing assembly of drum-type washing machine and drum-type washing machine with the same
US20070227200A1 (en) * 2006-03-29 2007-10-04 Lg Electronics Inc. Drum type washing machine
US20080034917A1 (en) * 2004-11-17 2008-02-14 Dyson Technolohy Limited Automatic Balancing Device
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
WO2010105313A1 (en) * 2009-03-20 2010-09-23 Safedin Zelic Inertial auto balancing mechanism
US20110107527A1 (en) * 2009-11-11 2011-05-12 De Buzzaccarini Francesco Cleaning method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0211706D0 (en) * 2002-05-22 2002-07-03 Dyson Ltd Automatic balancing device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE26464C (de) * C. H. WEISBACH in Chemnitz Gewichts-Regulatoren für Schleudermaschinen
US2904185A (en) * 1953-02-03 1959-09-15 George M Gibson Laundering machines
US2984094A (en) * 1957-11-08 1961-05-16 Frame Sa Washing machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE26464C (de) * C. H. WEISBACH in Chemnitz Gewichts-Regulatoren für Schleudermaschinen
US2904185A (en) * 1953-02-03 1959-09-15 George M Gibson Laundering machines
US2984094A (en) * 1957-11-08 1961-05-16 Frame Sa Washing machine

Cited By (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3356222A (en) * 1965-04-20 1967-12-05 Frame Sa Locking and release mechanism for a washing machine balancing device
US5345792A (en) * 1992-12-28 1994-09-13 Whirlpool Corporation Balancer for an automatic washer
AU2003233877B2 (en) * 2002-05-22 2007-02-01 Dyson Technology Limited Automatic balancing device
RU2302569C2 (ru) * 2002-05-22 2007-07-10 Дайсон Текнолоджи Лимитед Устройство автоматической балансировки
US20050144736A1 (en) * 2002-05-22 2005-07-07 Jones David M. Automatic balancing device
US7509825B2 (en) 2002-05-22 2009-03-31 Dyson Technology Limited Automatic balancing device
WO2003098070A1 (en) * 2002-05-22 2003-11-27 Dyson Technology Limited Automatic balancing device
CN100378368C (zh) * 2002-05-22 2008-04-02 戴森技术有限公司 自动平衡装置
US20100018261A1 (en) * 2002-12-27 2010-01-28 Jae Won Chang Drum type washing machine
US8341983B2 (en) 2002-12-27 2013-01-01 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
US8087267B2 (en) 2002-12-27 2012-01-03 Lg Electronics Inc. Drum type washing machine
US8616027B2 (en) * 2002-12-27 2013-12-31 Lg Electronics Inc. Drum type washing machine
US8887537B2 (en) 2002-12-27 2014-11-18 Lg Electronics Inc. Drum-type washing machine
US20090071200A1 (en) * 2002-12-27 2009-03-19 Jae-Won Chang Drum type washing machine
US20040123631A1 (en) * 2002-12-27 2004-07-01 Jae-Won Chang 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
US8671719B2 (en) 2002-12-27 2014-03-18 Lg Electronics Inc. Drum type washing machine
US7571625B2 (en) 2002-12-27 2009-08-11 Lg Electronics Inc. Drum type washing machine
US7533548B2 (en) 2002-12-27 2009-05-19 Lg Electronics Inc. Drum type washing machine
US20100089102A1 (en) * 2002-12-27 2010-04-15 Jae-Won Chang Drum type washing machine
US20100095714A1 (en) * 2002-12-27 2010-04-22 Jae-Won Chang Drum type washing machine
US8336340B2 (en) 2002-12-27 2012-12-25 Lg Electronics Inc. Drum-type washing machine
US8336339B2 (en) 2002-12-27 2012-12-25 Lg Electronics Inc. Drum type washing machine
US8322170B2 (en) 2002-12-27 2012-12-04 Lg Electronics Inc. Drum-type washing machine
US8302434B2 (en) 2002-12-27 2012-11-06 Lg Electronics Inc. Drum-type washing machine
US8156770B2 (en) 2002-12-27 2012-04-17 Lg Electronics, Inc. Drum type washing machine
US7930910B2 (en) 2002-12-27 2011-04-26 Lg Electronics Inc. Drum type washing machine
US20110094272A1 (en) * 2002-12-27 2011-04-28 Lg Electronics Inc. Drum type washing machine
US8429938B2 (en) 2004-07-20 2013-04-30 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
US20080307833A1 (en) * 2004-07-20 2008-12-18 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8726702B2 (en) 2004-07-20 2014-05-20 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
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
US7568366B2 (en) * 2004-07-20 2009-08-04 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
US20070017261A1 (en) * 2004-07-20 2007-01-25 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
US8286531B2 (en) * 2004-11-17 2012-10-16 Dyson Technology Limited Automatic balancing device
US20080034917A1 (en) * 2004-11-17 2008-02-14 Dyson Technolohy Limited Automatic Balancing Device
US20090044574A1 (en) * 2005-09-30 2009-02-19 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
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
US8671718B2 (en) 2005-09-30 2014-03-18 Lg Electronics Inc. Drum-type washing machine
US20110041566A1 (en) * 2005-09-30 2011-02-24 Lg Electronics Inc. Drum-type washing machine
US20120047963A1 (en) * 2005-09-30 2012-03-01 Lg Electronics Inc. Drum-type washing machine
US20120006074A1 (en) * 2005-09-30 2012-01-12 Lg Electronics Inc. Drum-type washing machine
US20120006075A1 (en) * 2005-09-30 2012-01-12 Lg Electronics Inc. Drum-type washing machine
US7841220B2 (en) 2005-09-30 2010-11-30 Lg Electronics Inc. Drum-type washing machine
US20070074543A1 (en) * 2005-09-30 2007-04-05 Lg Electronics Inc. Bearing housing assembly of drum-type washing machine and drum-type washing machine with the same
US7536882B2 (en) * 2006-03-29 2009-05-26 Lg Electronics Inc. Drum type washing machine
USRE44795E1 (en) 2006-03-29 2014-03-11 Lg Electronics Inc. Drum type washing machine
US20070227200A1 (en) * 2006-03-29 2007-10-04 Lg Electronics Inc. Drum type washing machine
USRE44674E1 (en) 2006-03-29 2013-12-31 Lg Electronics Inc. Drum type washing machine
USRE44511E1 (en) 2006-03-29 2013-10-01 Lg Electronics Inc. Drum type washing machine
USRE44028E1 (en) 2006-03-29 2013-02-26 Lg Electronics Inc. Drum type washing machine
USRE43625E1 (en) 2006-03-29 2012-09-04 Lg Electronics Inc. Drum type washing machine
WO2010105313A1 (en) * 2009-03-20 2010-09-23 Safedin Zelic Inertial auto balancing mechanism
US8449626B2 (en) * 2009-11-11 2013-05-28 The Procter & Gamble Company Cleaning method
US20110107527A1 (en) * 2009-11-11 2011-05-12 De Buzzaccarini Francesco Cleaning method

Also Published As

Publication number Publication date
DK104838C (da) 1966-07-11
CH383911A (fr) 1964-11-15
AT239731B (de) 1965-04-26
GB1035033A (en) 1966-07-06

Similar Documents

Publication Publication Date Title
US2984094A (en) Washing machine
JP2957146B2 (ja) バランサを有する洗濯機
JPS6326674B2 (da)
US5345792A (en) Balancer for an automatic washer
US2538246A (en) Washing machine
JP2957144B2 (ja) 洗濯機用ボールバランサ
JPH08215473A (ja) ドラム型洗濯機の洗濯槽
EP0810389A1 (en) Balancing device
GB1598399A (en) Drum type automatic electric washing machine
US3356222A (en) Locking and release mechanism for a washing machine balancing device
US1847159A (en) Extractor
EP2708628B1 (en) Washing machine
US2886979A (en) Balancing mechanism for washing machines
US2346668A (en) Washing machine
US2995023A (en) Pulsator mechanism for washing machines
CN106811923B (zh) 洗衣机及用于洗衣机的平衡环
JPS5837353A (ja) 遠心回転機用バランサ
US2580435A (en) Washing machine
JPS54120957A (en) Centrifugal dehydrator
US3321997A (en) Load equalizer
US2775883A (en) Centrifugal extracting and washing machine
KR100807256B1 (ko) 밸런서를 구비한 세탁기
US3026701A (en) Combined washing and centrifuging machine with vibration-isolating suspension system
US3116813A (en) Vibration damping mechanism
JP3973571B2 (ja) ドラム式洗濯機