US3077200A - Multiple spray structure for dishwashers and the like - Google Patents

Multiple spray structure for dishwashers and the like Download PDF

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Publication number
US3077200A
US3077200A US107987A US10798761A US3077200A US 3077200 A US3077200 A US 3077200A US 107987 A US107987 A US 107987A US 10798761 A US10798761 A US 10798761A US 3077200 A US3077200 A US 3077200A
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United States
Prior art keywords
arm
spray
liquid
rack
tube
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
US107987A
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English (en)
Inventor
Lauren W Guth
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.)
General Electric Co
Original Assignee
General Electric Co
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 to NL278053D priority Critical patent/NL278053A/xx
Application filed by General Electric Co filed Critical General Electric Co
Priority to US107987A priority patent/US3077200A/en
Priority to GB16834/62A priority patent/GB981728A/en
Priority to CH537462A priority patent/CH392796A/de
Priority to DEG34896A priority patent/DE1265365B/de
Priority to FR896419A priority patent/FR1320698A/fr
Application granted granted Critical
Publication of US3077200A publication Critical patent/US3077200A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • A47L15/23—Rotary spraying devices moved by means of the sprays
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements

Definitions

  • Automatic dishwashers of the domestic type are generally designed to employ an operating cycle including a series of separate washing and rinsing operations in each of which a comparatively small amount of water is admitted to the washing compartment, circulated therein, and then discharged from the machine.
  • the washing water is generally sprayed upon the dishes in a plurality of spray streams under a pressure head provided by a pumping mechanism or impeller contained in the dishwasher housing, and another mechanism serves to provide a rapid draining of the soiled water from the dishwasher at the appropriate time in the cycle of dishwashing operation.
  • the effectiveness of the Washing action is related not only to the amount of water employed and the number of times it contacts the dishes, but also to the force of the sprays, the directions of the sprays, and the interrelation of these sprays so that all parts of the dishes will receive a thorough washing treatment.
  • This invention was conceived during the development of three and four levels of Washing or spraying action to obtain maximum washability without endangering fine china and crystal by overturning and breakage.
  • a general object of the present invention is to provide a multiple spray structure which employs the available wash liquid in an efiicient manner and which gives a substantially uniform washing action at different levels within the machine for a given amount of liquid without interfering with the loading of the dish racks or the movement of the lower rack in the case of a front opening drop door machine.
  • Another object is to provide a multiple spray structure having both rotating and sliding or extensible parts whose movement is caused by the How of the washing liquid under pressure through the spray structure.
  • a further object is to provide a multiple non-clogging spray structure that is mounted on a rotatable spray arm and has an extensible and retractable member arranged to occupy a retracted position during loading of the dishes into a dishwasher and to occupy an extended position during washing of the dishes.
  • a horizontally rotatable spray arm disposed beneath the lower rack of dishes in the dishwasher and rotatable under the reactive force of liquid discharged from that arm.
  • a tubular housing afiixed to the rotatable spray arm adjacent the pivotal axis thereof and extending upwardly therefrom also receives liquid and has telescopically mounted thereon a spray tube or other extensible means which moves to an extended position under pressure of liquid entering that housing.
  • the spray tube in turn has one or more orifices arranged to direct rotating sprays of liquid against an upper rack of dishes, and which sprays are interrelated not only to each other but also to the spray from the lower rotatable spray arm, all
  • FIGURE 1 is a side elevation view, with parts broken away and parts in section, of a portable automatic dishwasher incorporating the present invention
  • FIGURE 2 is a top plan view of the central portion of the rotatable spray arm and with the vertical spray tube in retracted position;
  • FIGURE 3 is a sectional view taken on line 3-3 of FIGURE 2;
  • FIGURE 4 is a sectional view taken on line 4--4 of F FIGURE 3 and with the spray tube in fully extended position;
  • FIGURE 5 is a fragmentary sectional view of the upper end of the spray tube when it is in its raised position showing the nature of the dissimilar sprays issuing therefrom.
  • FIGURE 1 of the drawing there is shown a portable automatic dishwasher comprising a tub 9 defined by side walls 10, 11, 12 and 13 and having a bottom wall 14 sloping downwardly to form a sump space 15 for the collection of washing liquid.
  • This liquid is supplied to the machine by any suitable means, not shown, and which supply forms no part of the present invention.
  • the tub is closed at its top by a cover 16 hinged at 17, although the invention as will be understood, is in no way limited to a dishwasher having this type of access opening.
  • a suitable latch 18 may be provided at the front edge of the access cover for locking the cover in closed position during the operation of the dishwasher, and a cover push plate 19 serves to assist in the opening and closing of the cover.
  • Within the front panel 20 of the cabinet structure the controls of the machine may conveniently be mounted, and a handle 21 for moving the machine on its casters 22 may likewise be mounted on this front panel.
  • a pumping mechanism 26 is mounted in the sump 15 through the bottom wall of the tub 9 and includes a reversible electric motor 30 beneath the tub for driving an axial flow pump (not shown) located within the upper pump housing 31 and discharging into a rotatable spray arm 32 later to be described.
  • the single shaft of the motor likewise drives a centrifugal pump (not shown) located within the lower pump housing 33 and discharging into either the recirculating spray conduit 34 or the drain conduit 35, depending upon the direction of the motor rotation.
  • Liquid pumped into conduit 34 serves a wash ing purpose and passes through a riser conduit 36 into a rotatable spray means 37 mounted to spray downwardly upon the dishes in the upper rack 23, as best disclosed in the co-pending application of Russell M. Sasnett, Serial No. 853,894, now Patent No. 2,987,260, filed November 18, 1959, that is likewise assigned to the same assignee as is the present invention.
  • the liquid enters the pump mechanism 26 through an annular screen 27 that also separates the top axial flow pump from the lower centrifugal pump.
  • the rotatable spray arm 32 is fabricated of light sheet metal and includes an upper hollow portion 410 and a lower hollow portion 41 joined at their respective peripheral edges by a rolled seam 42.
  • the spray arm is provided with a centrally located round aperture in its lower portion 41 having a rolled over rim 43-. This rim is assembled over a cylindrical bearing 44 formed upon the top surface of the upper pump housing 31. From the inner surface ofthat housing a plurality of thin arch-like webs 45, '46 and 47 spaced from each other, extend upwardly and support at their tops a stationary boss 48.
  • a diffuser which is part of the axial flow pump mechanism has a shank 51 which fits between the radial webs 45, 46 and 47. At the top of this boss is a flat portion 49 from which extends a vertical bolt 50 suitably threaded thereto. At its lower end the bolt supports the shank 51 of a stationary diffuser element enclosed within the upper pump housing 31 on the downstream side of the axial flow pump and serving to direct the flow of liquid toward the spray arm in a generally axial flow from that housing. At its upper end the bolt 51 supports a flanged nut 52 overlying the outer face of the upper portion 49 of the spray arm. The nut also includes a cylindrical portion 51' which extends into a close fitting aperture 28 in the spray arm.
  • a fiber washer 29 underlies the flanged head of the nut 52 to function as the main bearing of the rotating spray arm.
  • a reinforcing disc 53- surrounding the bolt is fastened on the underside of upper portion 40 of the spray arm and is provided with apertures 38 in register with similar apertures in that upper portion of the spray arm. This disc serves as an abutment to which fastening bolts 54 and S of the tubular housing 39 of the spray structure may be attached.
  • the composite spray arm 32 preferably extends equal lateral distances from its central mounting and a plurality of outwardly bulged portions of the. upper arm portion 40,-here shown as five such bulges at 56, 57, 58, 59 and 60, each having an orifice 61 therein, are so arranged asrto cause rotation of the arm under the reactive force of liquid discharged from those orifices and at the same time to direct the spray from those orifices against the dishes with an efficient washing action.
  • the bulge 58 having orifice 61 therein provides a spray such as that seen, for example, at A in FIGURE 4.
  • the five rotating sprays thus furnished by the spray arm 32 afford a thorough washing in a lower level of the confines of the tub 9 and the rotating spray provided by the spray means 37 under the cover 16 affords a thorough washing in an upper level of that tub.
  • the present invention also provides a thorough washing at an intermediate or third and fourth level, as will become apparent by reference to FIGURES 3 and 4.
  • a hollow tubular housing 39 having a cylindrical wall 63- is furnished with a flange 64 at its base through which the bolts 54 and 55 extend for fastening the housing to the rotatable spray arm.
  • the housing At its upper end the housing includes an inwardly directed shoulder 65.
  • a hollow-spray tube 66 Telescopically mounted within this housing is a hollow-spray tube 66 at the lower end of which is an outwardly extending flange 67 of sufiicient diameter to engage against the shoulder 65 when the spray tube is fully'extended.
  • This lower end of the spray tube forms also a piston portion movable within the cylinder formed by the wall 63 of the tubular housing and this piston portion further serves to limit retracting movement of the spray tube by engagement against the upper surface of the arm portion 40 clamped by bolt 50.
  • the dimensions of the parts moreover are so chosen that the spray tube will fall promptly by gravity to fully retracted position when liquid flow the-reinto ceases.
  • the upper portion of the extensible tube 66 has parallel, flattened sides 66' of reduced spacing.
  • the spray tube 66 Adjacent its lower end the spray tube 66 is enlarged and formed with diametrically opposed webs 68 and 69 having upwardly slanting, and preferably symmetrical, notches or orifices '70 and 71, respectively, located therein. These orifices are uncovered when the spray tube 66 is fully extended and serve in turn to provide a spray B shown in FIGURE 4 at an intermediate level within the tub.
  • the spray tube 66 is formed with an orifice having one or more orifice portions through which additional liquid may be sprayed.
  • a preferred form of this last-mentioned orifice produces a subdivision of the sprayed liquid into two dissimilar patterns, and for this purpose the upper end of the spray tube is formed with a restriction 72 having an inwardly directed off-center bafile thereon and containing a curved flow-directing surface '73. Facing this curved surface is a slit orifice portion '74 from which a spray C of liquid as seen in FIGURE 5 is directed generally laterally of the spray tube. Opposite the concave surface is another slit orifice portion 75 extending generally from the vertical axis of the spray tube to a horizontal plane and through which a fan-shaped or thin sheet spray D is emitted.
  • the extensible member into which the water passes upwardly from the spray arm may be mounted on that arm so as to be extended or raised by rotation of the arm and biased to fall to retracted position when the arm ceases rotation, or may be made of soft resilient tubular material of rubber, plastic or fabric which is extensible under the pressure of water entering the same and retractable when water fiow ceases, or may take other equivalent forms.
  • the discharge end of the extensible member will have a nozzle or restric tion to form the spray into a thin stream of sheet form.
  • orifices arranged to spray that liquid from the intermediate level within the tub will be employed.
  • the spray arm 32 is the lower level spray
  • the rotating spinner or nozzle 37 under the cover is the upper level spray
  • the spray tube provides a third and fourth level of spray to direct streams of water at all of the necessary areas in the tub where food soil is to be removed from the dishes.
  • a dishwashing apparatus comprising a washing tub
  • an upper and a lower dish rack supported in said tub and a multiple spray structure for said racks comprising a horizontally rotatable spray arm positioned below the lower rack and having a plurality of orifices therein for spraying liquid from a lower elevation, means for supplying liquid under pressure to said arm, said arm and said means for supplying liquid under pressure being formed so that liquid discharging from the orifices provides sufficient reaction force to rotate the arm, a tubular housing mounted on the spray arm adjacent the pivotal axis thereof for rotation therewith and receiving liquid from said arm, a hollow spray tube telescopically mounted within said housing and having a hollow piston adjacent the lower end of said tube and movable upwardly within said housing, said tube having a lower position in which its upper end is approximately at the level of said lower rack and an upper position in which its upper end extends up a substantial part of the distance between said lower rack and said upper rack, means adjacent the upper end of said housing for limiting the extensible movement of said tube under the pressure of liquid acting upon said piston when said tube
  • a dishwashing apparatus as recited in claim 2 wherein the lower end of the hollow spray tube is provided with a pair of orifices having upwardly sloping surfaces directing the liquid to the sides of the tub adjacent the lower edge of the upper rack.
  • an automatic dishwashiug machine as recited in claim 3 wherein the extensible member comprises a hollow housing fixed to the upper surface of the spray arm and a telescopic tube that fits within the housing in the lowered position and rises partially out of the housing to the raised position, the upper end of the telescopic tube having flow restricting means with an off-center battle to provide a double orifice having different. flow characteristics to obtain two thin sheets of liquid spraying upwardly against the bottom of the upper rack.
  • An automatic dishwashing machine as recited in claim 4 wherein the lower end of the telescopic tube is provided with a pair of diametrically opposed slots formed therein, said lower end of said tube being formed with walls of substantial thickness, said slots sloping upwardly through said walls to direct the liquid toward the outer edges of the bottom of the upper rack.
  • Dishwashing apparatus comprising a washing tub, an upper dish rack and a lower dish rack supported in said tub, and a multiple spray structure for said racks comprising a horizontally rotatable spray arm positioned below said lower rack and having a plurality of orifices therein for spraying liquid from a lower elevation, means for supplying liquid under pressure to said arm, said arm and said means for supplying liquid under pressure being formed so that liquid discharging from the orifices provides suflicient reaction force to rotate said arm, a hollow extensible member mounted on said arm adjacent the pivotal axis thereof and receiving liquid from said arm, said extensible member having an upper end with at least a pair of orifices asymmetrically formed therein thereby to provide different flow characteristics to obtain two thin sheets of liquid spraying upwardly in difierent patterns against the bottom of said upper rack, said extensible member having a lower position in which its upper end is approximately at the level of said lower rack and an upper position in which its upper end extends up a substantial part of the distance between said lower

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  • Washing And Drying Of Tableware (AREA)
US107987A 1961-05-05 1961-05-05 Multiple spray structure for dishwashers and the like Expired - Lifetime US3077200A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL278053D NL278053A (ja) 1961-05-05
US107987A US3077200A (en) 1961-05-05 1961-05-05 Multiple spray structure for dishwashers and the like
GB16834/62A GB981728A (en) 1961-05-05 1962-05-02 Improvements in multiple spray structure for dishwashers
CH537462A CH392796A (de) 1961-05-05 1962-05-04 Geschirrwaschmaschine
DEG34896A DE1265365B (de) 1961-05-05 1962-05-04 Spritzrohranordnung fuer eine Geschirrspuelmaschine
FR896419A FR1320698A (fr) 1961-05-05 1962-05-04 Dispositif à jets multiples pour machines à laver la vaisselle et similaires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US107987A US3077200A (en) 1961-05-05 1961-05-05 Multiple spray structure for dishwashers and the like

Publications (1)

Publication Number Publication Date
US3077200A true US3077200A (en) 1963-02-12

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US107987A Expired - Lifetime US3077200A (en) 1961-05-05 1961-05-05 Multiple spray structure for dishwashers and the like

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US (1) US3077200A (ja)
CH (1) CH392796A (ja)
DE (1) DE1265365B (ja)
GB (1) GB981728A (ja)
NL (1) NL278053A (ja)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3169541A (en) * 1963-12-26 1965-02-16 Gen Electric Washing machine having improved closure member sealing means
US3169540A (en) * 1963-12-26 1965-02-16 Gen Electric Washing machine having improved closure member sealing means
US3213866A (en) * 1963-12-20 1965-10-26 Gen Electric Dishwashing apparatus with conical spray device means
US3288156A (en) * 1964-11-19 1966-11-29 Waste King Corp Dishwasher with upwardly extensible distributor
US3288155A (en) * 1964-09-28 1966-11-29 Gen Electric Silverware washing system
US3312232A (en) * 1965-01-22 1967-04-04 Gen Electric Pump impeller and reaction-type spray device having an inlet disposed in the same plane
US3375835A (en) * 1965-09-23 1968-04-02 Whirlpool Co Article washing apparatus
US3529773A (en) * 1967-07-28 1970-09-22 Sybron Corp Washing machine transfer valve
US3612074A (en) * 1970-05-20 1971-10-12 Gen Electric Cleaning agent dispensing device in a dishwasher
US3648931A (en) * 1970-09-08 1972-03-14 Gen Motors Corp Dishwasher with selectable levels of wash
US3776465A (en) * 1972-08-17 1973-12-04 Gen Electric Liquid spray device
US3903911A (en) * 1973-11-21 1975-09-09 Gen Electric Dishwasher spray system
US3989054A (en) * 1975-10-28 1976-11-02 General Motors Corporation Dishwasher system
FR2543427A1 (fr) * 1983-03-29 1984-10-05 Gen Electric Ensemble formant palier pour bras d'aspersion
FR2549363A1 (fr) * 1983-07-20 1985-01-25 Gen Electric Systeme de distribution multijet pour machine a laver la vaisselle
US4991611A (en) * 1989-06-08 1991-02-12 Whirlpool Corporation Lower spray arm for dishwasher
US5241975A (en) * 1991-03-05 1993-09-07 Kabushiki Kaisha Toshiba Dishwasher
US5727581A (en) * 1996-10-02 1998-03-17 General Electric Company Dishwasher spray-arm assembly
US5937880A (en) * 1997-10-03 1999-08-17 Tca, Inc. Under counter dish washing machine
US20080057173A1 (en) * 2006-08-30 2008-03-06 Soon Bong Kim Apparatus for drying food waste
EP1980273A1 (de) * 2007-04-03 2008-10-15 DBK David + Baader GmbH Entkeimungsvorrichtung und Verfahren zum Desinfizieren von Prothesenlinern
US20090178664A1 (en) * 2008-01-15 2009-07-16 Valentine Richard D Rotisserie oven with lifting wash arm
US10631708B2 (en) 2018-09-14 2020-04-28 Midea Group Co., Ltd. Dishwasher with docking arrangement for elevation-adjustable rack
US10765291B2 (en) 2018-09-14 2020-09-08 Midea Group Co., Ltd. Dishwasher with check valve in rotatable docking port
US11000176B2 (en) 2018-09-14 2021-05-11 Midea Group Co., Ltd. Dishwasher with rotatable diverter valve
US11045066B2 (en) 2019-03-11 2021-06-29 Midea Group Co., Ltd. Dishwasher with keyed coupling to rack-mounted conduit
US11058279B2 (en) 2017-09-29 2021-07-13 Midea Group Co., Ltd. Dishwasher with discretely directable tubular spray elements
US11071440B2 (en) 2018-09-14 2021-07-27 Midea Group Co., Ltd. Dishwasher with rack-mounted conduit return mechanism
US11412912B2 (en) 2020-09-21 2022-08-16 Midea Group Co., Ltd. Dishwasher with tubular spray element slip ring alignment
US11484180B2 (en) 2020-11-11 2022-11-01 Midea Group Co., Ltd. Dishwasher with tubular spray element including multiple selectable spray patterns
US11497374B2 (en) 2020-02-19 2022-11-15 Midea Group Co., Ltd. Dishwasher with wall-mounted rotatable conduit
US11826001B2 (en) 2022-02-15 2023-11-28 Midea Group Co., Ltd. Dishwasher with tubular spray element including elongated metal tube and retaining tab for mounting support member thereto

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58155833A (ja) * 1982-03-11 1983-09-16 オリンパス光学工業株式会社 内視鏡用洗浄装置
DE3540238C2 (de) * 1985-11-13 1995-06-29 Blomberg Werke Kg Geschirrspülmaschine

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US1940615A (en) * 1931-08-07 1933-12-19 Webster Ralph Waldo Machine for cleaning bottles
US1954222A (en) * 1931-02-13 1934-04-10 Olson Bennett Can sterilizer and cleaner
GB453610A (en) * 1935-04-08 1936-09-15 Walter Orbell Green Improved construction of apparatus for cleansing the insides of casks, barrels and the like
US2664903A (en) * 1952-09-10 1954-01-05 Gen Electric Dishwasher
US2943633A (en) * 1957-08-27 1960-07-05 Westinghouse Electric Corp Dishwashing apparatus
FR1236023A (fr) * 1959-06-02 1960-07-15 Esswein & Cie Machine à laver la vaisselle
US3009470A (en) * 1957-09-23 1961-11-21 Gen Electric Domestic appliance

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US1681322A (en) * 1922-05-17 1928-08-21 Fuller Brush Co Washing machine
US2380090A (en) * 1942-06-11 1945-07-10 Hobart Mfg Co Washing machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1954222A (en) * 1931-02-13 1934-04-10 Olson Bennett Can sterilizer and cleaner
US1940615A (en) * 1931-08-07 1933-12-19 Webster Ralph Waldo Machine for cleaning bottles
GB453610A (en) * 1935-04-08 1936-09-15 Walter Orbell Green Improved construction of apparatus for cleansing the insides of casks, barrels and the like
US2664903A (en) * 1952-09-10 1954-01-05 Gen Electric Dishwasher
US2943633A (en) * 1957-08-27 1960-07-05 Westinghouse Electric Corp Dishwashing apparatus
US3009470A (en) * 1957-09-23 1961-11-21 Gen Electric Domestic appliance
FR1236023A (fr) * 1959-06-02 1960-07-15 Esswein & Cie Machine à laver la vaisselle

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3213866A (en) * 1963-12-20 1965-10-26 Gen Electric Dishwashing apparatus with conical spray device means
US3169541A (en) * 1963-12-26 1965-02-16 Gen Electric Washing machine having improved closure member sealing means
US3169540A (en) * 1963-12-26 1965-02-16 Gen Electric Washing machine having improved closure member sealing means
US3288155A (en) * 1964-09-28 1966-11-29 Gen Electric Silverware washing system
US3288156A (en) * 1964-11-19 1966-11-29 Waste King Corp Dishwasher with upwardly extensible distributor
US3312232A (en) * 1965-01-22 1967-04-04 Gen Electric Pump impeller and reaction-type spray device having an inlet disposed in the same plane
US3375835A (en) * 1965-09-23 1968-04-02 Whirlpool Co Article washing apparatus
US3529773A (en) * 1967-07-28 1970-09-22 Sybron Corp Washing machine transfer valve
US3612074A (en) * 1970-05-20 1971-10-12 Gen Electric Cleaning agent dispensing device in a dishwasher
US3648931A (en) * 1970-09-08 1972-03-14 Gen Motors Corp Dishwasher with selectable levels of wash
US3776465A (en) * 1972-08-17 1973-12-04 Gen Electric Liquid spray device
US3903911A (en) * 1973-11-21 1975-09-09 Gen Electric Dishwasher spray system
US3989054A (en) * 1975-10-28 1976-11-02 General Motors Corporation Dishwasher system
FR2543427A1 (fr) * 1983-03-29 1984-10-05 Gen Electric Ensemble formant palier pour bras d'aspersion
FR2549363A1 (fr) * 1983-07-20 1985-01-25 Gen Electric Systeme de distribution multijet pour machine a laver la vaisselle
US4991611A (en) * 1989-06-08 1991-02-12 Whirlpool Corporation Lower spray arm for dishwasher
US5241975A (en) * 1991-03-05 1993-09-07 Kabushiki Kaisha Toshiba Dishwasher
US5727581A (en) * 1996-10-02 1998-03-17 General Electric Company Dishwasher spray-arm assembly
US5937880A (en) * 1997-10-03 1999-08-17 Tca, Inc. Under counter dish washing machine
US20080057173A1 (en) * 2006-08-30 2008-03-06 Soon Bong Kim Apparatus for drying food waste
EP1980273A1 (de) * 2007-04-03 2008-10-15 DBK David + Baader GmbH Entkeimungsvorrichtung und Verfahren zum Desinfizieren von Prothesenlinern
US20090178664A1 (en) * 2008-01-15 2009-07-16 Valentine Richard D Rotisserie oven with lifting wash arm
US8752538B2 (en) * 2008-01-15 2014-06-17 Premark Feg L.L.C. Rotisserie oven with lifting wash arm
US11800963B2 (en) 2017-09-29 2023-10-31 Midea Group Co., Ltd. Dishwasher with discretely directable tubular spray elements
US11058279B2 (en) 2017-09-29 2021-07-13 Midea Group Co., Ltd. Dishwasher with discretely directable tubular spray elements
US11000176B2 (en) 2018-09-14 2021-05-11 Midea Group Co., Ltd. Dishwasher with rotatable diverter valve
US10765291B2 (en) 2018-09-14 2020-09-08 Midea Group Co., Ltd. Dishwasher with check valve in rotatable docking port
US11071440B2 (en) 2018-09-14 2021-07-27 Midea Group Co., Ltd. Dishwasher with rack-mounted conduit return mechanism
US10631708B2 (en) 2018-09-14 2020-04-28 Midea Group Co., Ltd. Dishwasher with docking arrangement for elevation-adjustable rack
US11045066B2 (en) 2019-03-11 2021-06-29 Midea Group Co., Ltd. Dishwasher with keyed coupling to rack-mounted conduit
US11497374B2 (en) 2020-02-19 2022-11-15 Midea Group Co., Ltd. Dishwasher with wall-mounted rotatable conduit
US11412912B2 (en) 2020-09-21 2022-08-16 Midea Group Co., Ltd. Dishwasher with tubular spray element slip ring alignment
US11484180B2 (en) 2020-11-11 2022-11-01 Midea Group Co., Ltd. Dishwasher with tubular spray element including multiple selectable spray patterns
US11826001B2 (en) 2022-02-15 2023-11-28 Midea Group Co., Ltd. Dishwasher with tubular spray element including elongated metal tube and retaining tab for mounting support member thereto

Also Published As

Publication number Publication date
NL278053A (ja)
GB981728A (en) 1965-01-27
DE1265365B (de) 1968-04-04
CH392796A (de) 1965-05-31

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