US3370869A - Support for rotatable spray member - Google Patents

Support for rotatable spray member Download PDF

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Publication number
US3370869A
US3370869A US335855A US33585564A US3370869A US 3370869 A US3370869 A US 3370869A US 335855 A US335855 A US 335855A US 33585564 A US33585564 A US 33585564A US 3370869 A US3370869 A US 3370869A
Authority
US
United States
Prior art keywords
hub
spray arm
seal
spray
annular
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
US335855A
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English (en)
Inventor
Ival G Dutcher
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.)
Whirlpool Corp
Original Assignee
Whirlpool Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Whirlpool Corp filed Critical Whirlpool Corp
Priority to US335855A priority Critical patent/US3370869A/en
Priority to CH1343364A priority patent/CH424118A/fr
Priority to BE655520A priority patent/BE655520A/xx
Priority to GB45974/64A priority patent/GB1033330A/en
Priority to NL6413166A priority patent/NL6413166A/xx
Priority to FR823A priority patent/FR1419473A/fr
Application granted granted Critical
Publication of US3370869A publication Critical patent/US3370869A/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
    • A47L15/42—Details

Definitions

  • This invention relates to spray devices and in particular to means for sealing rotatable spray arms to a supporting hub in apparatus such as dishwashers.
  • a spray arm is rotatably carried on a fixed hub at the bottom of a tub for spraying dish washing liquid upwardly into the tub to wash dishes and the like retained therein.
  • the present invention comprehends an improved means for carrying a spray arm on a hub and may be advantageously employed in such apparatus.
  • a principal feature of the present invention is the provision of a new and improved spray device.
  • Another feature of the invention is the provision of such a spray device having new and improved means for carrying a spray arm upon a hub.
  • a further feature of the invention is the provision of such a spray device having a hub, a flow passage through the hub having an outlet for discharging fluid laterally therefrom, and a hollow spray arm, including means for mounting the spray arm rotatably on the hub, annular retaining means on the hub, means on the spray arm cooperating with the support means for retaining the spray arm rotatably on the hub, annular means on the spray arm extending circumjacent the hub, and an annular seal having an inner portion sli-dably rotatably engaging the hub and an outer portion adapted to be held in sealing engagement with the annular means on the spray arm by fluid pressure within the arm.
  • Still another feature of the invention is the provision of such a spray arm mounting means wherein the seal is formed of a flexible material to accommodate eccentricity and irregularities in the portions of the spray device engaged thereby.
  • a yet further feature of the invention is the provision of such a spray device having new and improved seal means arranged to be held in sealing engagement by the pressure of the fluid delivered therethrough.
  • a yet further feature of the invention is the provision of such a spray device wherein the seal provides an effectively minimum bearing surface for facilitated rotation of the spray arm.
  • FIGURE 1 is a fragmentary diametric section of a dishwasher apparatus provided with a spray device embodying the invention
  • FIGURE 2 is a fragmentary enlarged transverse section taken substantially along the line 2-2 of FIGURE 1;
  • FIGURE 3 is a fragmentary vertical section taken substantially along the line 33 of FIGURE 2;
  • FIGURE 4 is a fragmentary section similar to that of a portion of FIGURE 3, but illustrating the installation of the seal on the spray arm.
  • a dishwasher apparatus generally designated is shown to comprise a tub 11 having a bottom wall 12 carrying a conventional pump 13 provided with an outlet 14 for delivering washing liquid under pressure upwardly therefrom.
  • a conventional electrical heating rod 15 may be installed above the bottom wall 12 for heating the washing liquid in the usual manner during selected cycles of operation of the dishwasher.
  • the dish washing liquid is dispersed into the dish washing chamber 16 defined by the tub 11 by means of a spray arm assembly generally designated 17.
  • the spray arm assembly is carried on a hub 18 upstanding from the outlet 14 of the pump.
  • the hub further carries a jet nozzle 19, as shown in FIGURE 3, the nozzle being provided at its upper end with a nozzle cap 29.
  • the spray arm 17 includes an upper nozzle plate 21 having a downturned inner annular flange 22 received in an upwardly opening annular groove 23 in an upper portion 24 of the hub 18.
  • the nozzle cap includes an annular depending portion 25 overlying the nozzle plate to retain the flange 22 within the groove 23.
  • the spray arm defines a hollow interior 26 into which washing liquid is delivered through outlet openings 27 in the hub 18, the hub being provided with an axial bore 28 for conducting the washing liquid from the pump outlet 14 to the jet nozzle 19 and to the outlets 27.
  • the spray arm is further provided with a bottom plate 29 defining a radially inner annular flange 30 having an inner diameter slightly larger than the outer diameter of a concentric lower portion 31 of the hub 18 below the outlets 27.
  • the flange 30 is sealingly connected to the hub portion 31 by means of an annular seal 32 formed of a material having a low coefficient of friction and having a radially extending portion 33 and an inner axial bearing surface 34.
  • the inner surface 34 facially engages the hub portion 31 and the upper portion 33 facially engages the flange 30,
  • the seal is preferably formed of a flexible material such as nylon and is provided with a plurality of L-shaped tabs 35, herein three, at degree circumferentially spaced positions on the lower end of the inner portion for retaining the seal in association with the flange 30 of the spray arm plate 29.
  • the seal is readily installed on the flange 30 by flexing the seal sufficiently to urge the tabs radially inwardly to clear the inner end of the flange 30 and permit axial movement of the seal to the final position shown in dotted lines on FIGURE 4.
  • the assembly of the apparatus is extremely simple. Firstly, the jet nozzle 19 is attached to the hub 13 and the assembled jet nozzle and hub are then threaded onto the pump outlet 14, as shown in FIGURE 3. The seal 32 is then installed on the spray arm flange 30, as discussed above, and the spray arm is installed on the hub with the seal in engagement with portion 31 thereof and the flange 22 received in the upwardly opening groove 23 at the upper portion of the hub. The nozzle cap 20 is then threaded onto the hub to lock the spray arm in association with the hub.
  • the axial length of seal leg portion 34 is preferably relatively small so that the areas of frictional engagement of the seal with the hub portion 31 is etfectively minimum, whereby improved facilitated rotation of the seal on the hub portion 31 is obtained.
  • the spray arm 17 is carried on the hub in a simple and economical manner by means of the improved seal structure 32.
  • the seal structure is extremely simple and economical while yet assuring long trouble-free life and improved facilitated rotation of the spray arm in operation of the dishwasher. Still further, the spray device structure may be readily assembled and disassembled for facilitated maintenance.
  • a spray device having a hub, a flow passage through the hub having an outlet for discharging fluid laterally therefrom, and a hollow spray arm, means for supporting the spray'arm rotatably on the hub, comprising:
  • annular retaining means on the hub
  • annular seal formed of a flexible material and having an inner portion slidably rotatably engaging the hub and extending between the hub and said annular flange, and an outer portion within said spray arm arranged to be held in sealing engagement with said annular flange on the spray arm directly by fluid pressure within said arm;
  • seal retaining means includes one leg extending axially from said inner portion and a distal leg extending radially outwardly in axially spaced relation to said outer portion.
  • said seal retaining means includes a plurality of tabs each including a portion resiliently joined to said inner portion and a distal portion adapted to engage releasably the spray arm. 4. The spray device of claim 3 wherein said distal leg is radially shorter than said outer portion for facilitated installation of the seal on said annular flange.
  • seal retaining means includes one leg extending axially from said inner portion and a distal leg extending radially outwardly in axially spaced relation to said outer portion
  • said axial leg of the seal having an outer diameter slightly less than the inner diameter of said annular flange on the spray arm.
  • seal retaining means includes one leg extending axially from said inner portion and a distal leg extending radially outwardly in axially spaced relation to said outer portion, the axial length of said axial leg of the retaining portion being small.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
US335855A 1964-01-06 1964-01-06 Support for rotatable spray member Expired - Lifetime US3370869A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US335855A US3370869A (en) 1964-01-06 1964-01-06 Support for rotatable spray member
CH1343364A CH424118A (fr) 1964-01-06 1964-10-16 Dispositif pulvérisateur rotatif, notamment pour machine à laver la vaisselle
BE655520A BE655520A (en)van) 1964-01-06 1964-11-09
GB45974/64A GB1033330A (en) 1964-01-06 1964-11-11 Improvements in or relating to spray devices
NL6413166A NL6413166A (en)van) 1964-01-06 1964-11-12
FR823A FR1419473A (fr) 1964-01-06 1965-01-05 Support pour bras rotatif d'aspersion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US335855A US3370869A (en) 1964-01-06 1964-01-06 Support for rotatable spray member

Publications (1)

Publication Number Publication Date
US3370869A true US3370869A (en) 1968-02-27

Family

ID=23313512

Family Applications (1)

Application Number Title Priority Date Filing Date
US335855A Expired - Lifetime US3370869A (en) 1964-01-06 1964-01-06 Support for rotatable spray member

Country Status (6)

Country Link
US (1) US3370869A (en)van)
BE (1) BE655520A (en)van)
CH (1) CH424118A (en)van)
FR (1) FR1419473A (en)van)
GB (1) GB1033330A (en)van)
NL (1) NL6413166A (en)van)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3709236A (en) * 1969-12-08 1973-01-09 Jenn Air Corp Dishwasher
US3776465A (en) * 1972-08-17 1973-12-04 Gen Electric Liquid spray device
US3951683A (en) * 1974-08-05 1976-04-20 Whirlpool Corporation Water distribution system for dishwashing appliance
US3953276A (en) * 1972-10-26 1976-04-27 Zenith Radio Corporation Etching apparatus with plural nozzle arrangements
US4014467A (en) * 1975-11-03 1977-03-29 Duff-Norton Company, Inc. Dishwasher and coupling
US5211190A (en) * 1991-12-09 1993-05-18 Maytag Corporation Wash arm attachment
US5752533A (en) * 1996-06-11 1998-05-19 White Consolidated Industries, Inc. Jet spray nozzle with third level wash arm
US6035872A (en) * 1995-11-14 2000-03-14 Hans Werner Hees Rotary distributor rotating apparatus for handling of objects, in particular containers, with a revolving joint for the transport of fluid between a stationary assembly and a rotating assembly
US20090159101A1 (en) * 2007-12-21 2009-06-25 Wolf Appliance, Inc. Fluid supply system for appliance

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4028908C2 (de) * 1990-09-12 1996-09-26 Miele & Cie Geschirrspülmaschine mit einem Sprüharm über einem Geschirrkorb

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1180167A (en) * 1913-09-18 1916-04-18 Robert Mcmullan Irrigator-sprinkler.
GB234455A (en) * 1924-05-20 1925-11-15 Herbert Edwin Merseles Improvements in and relating to washing machines
US1705016A (en) * 1921-09-02 1929-03-12 Gen Motors Corp Pump construction
US1776714A (en) * 1929-01-29 1930-09-23 Armstrong Electric And Mfg Cor Lawn sprinkler
US2266223A (en) * 1940-04-05 1941-12-16 Dorr Co Inc Liquid distributor
US2520896A (en) * 1943-06-25 1950-08-29 Productive Inventions Inc Fluid transmission connection
US2586517A (en) * 1948-05-04 1952-02-19 Skinner Irrigation Company Water distributing device
US2647002A (en) * 1950-07-20 1953-07-28 Brummer Olin Oil seal means or the like
US2987260A (en) * 1959-11-18 1961-06-06 Gen Electric Top spray dishwasher
US2992781A (en) * 1958-05-19 1961-07-18 C E Howard Corp Tank washing device
US3064665A (en) * 1960-12-01 1962-11-20 Gen Electric Dishwashing apparatus
US3064984A (en) * 1959-08-20 1962-11-20 Gen Motors Corp Sealing grommet
US3084701A (en) * 1961-05-05 1963-04-09 Gen Electric Pumping mechanism and pump inlet cover for use therein

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1180167A (en) * 1913-09-18 1916-04-18 Robert Mcmullan Irrigator-sprinkler.
US1705016A (en) * 1921-09-02 1929-03-12 Gen Motors Corp Pump construction
GB234455A (en) * 1924-05-20 1925-11-15 Herbert Edwin Merseles Improvements in and relating to washing machines
US1776714A (en) * 1929-01-29 1930-09-23 Armstrong Electric And Mfg Cor Lawn sprinkler
US2266223A (en) * 1940-04-05 1941-12-16 Dorr Co Inc Liquid distributor
US2520896A (en) * 1943-06-25 1950-08-29 Productive Inventions Inc Fluid transmission connection
US2586517A (en) * 1948-05-04 1952-02-19 Skinner Irrigation Company Water distributing device
US2647002A (en) * 1950-07-20 1953-07-28 Brummer Olin Oil seal means or the like
US2992781A (en) * 1958-05-19 1961-07-18 C E Howard Corp Tank washing device
US3064984A (en) * 1959-08-20 1962-11-20 Gen Motors Corp Sealing grommet
US2987260A (en) * 1959-11-18 1961-06-06 Gen Electric Top spray dishwasher
US3064665A (en) * 1960-12-01 1962-11-20 Gen Electric Dishwashing apparatus
US3084701A (en) * 1961-05-05 1963-04-09 Gen Electric Pumping mechanism and pump inlet cover for use therein

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3709236A (en) * 1969-12-08 1973-01-09 Jenn Air Corp Dishwasher
US3776465A (en) * 1972-08-17 1973-12-04 Gen Electric Liquid spray device
US3953276A (en) * 1972-10-26 1976-04-27 Zenith Radio Corporation Etching apparatus with plural nozzle arrangements
US3951683A (en) * 1974-08-05 1976-04-20 Whirlpool Corporation Water distribution system for dishwashing appliance
US4014467A (en) * 1975-11-03 1977-03-29 Duff-Norton Company, Inc. Dishwasher and coupling
US5211190A (en) * 1991-12-09 1993-05-18 Maytag Corporation Wash arm attachment
US6035872A (en) * 1995-11-14 2000-03-14 Hans Werner Hees Rotary distributor rotating apparatus for handling of objects, in particular containers, with a revolving joint for the transport of fluid between a stationary assembly and a rotating assembly
US5752533A (en) * 1996-06-11 1998-05-19 White Consolidated Industries, Inc. Jet spray nozzle with third level wash arm
US20090159101A1 (en) * 2007-12-21 2009-06-25 Wolf Appliance, Inc. Fluid supply system for appliance
US8166983B2 (en) 2007-12-21 2012-05-01 Wolf Appliance, Inc. Fluid supply system for appliance

Also Published As

Publication number Publication date
NL6413166A (en)van) 1965-07-07
GB1033330A (en) 1966-06-22
CH424118A (fr) 1966-11-15
FR1419473A (fr) 1965-11-26
BE655520A (en)van) 1965-03-01

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