US 4,718,440 AGranted

Non electric dishwasher

AssigneeAC Industries, Ltd.

InventorsBrian Hawker, Joseph Faggard

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Abstract

An improved water powered dishwasher uniquely adapted to be operated by a domestic water supply line of either high, low or medium pressure including a housing, a rack rotatably mounted within the housing, the rack being adapted to support articles to be washed and a water jet subassembly for directing jets of water in the direction of the rack to impart rotational movement thereto. The jet subassembly comprises a collimated jet for emitting a collimated stream of water in the direction of the lower periphery of the rack for initiating and assisting in sustaining the rotation thereof and a second spray jet for washing the articles and for urging forward rotation of the rack. The dishwasher also embodies a novel control mechanism, including a timer valve for controlling the period of time water flows toward the jet means and a diverter assembly for controlling the collimated jet so as to urge forward rotation of the rack in low water pressure conditions, or, alternatively, to accomplish braking of the rotation of the rack under high water pressure conditions.

Claims14

Dependent claims

A dishwasher adapted to be interconnected with a source of water under pressure, comprising:

(a) a base;
(b) a closure housing carried by said base said closure housing having a central axis and interconnected top and side walls;
(c) a rack adapted to support articles to be washed having upper and lower peripheral portions interconnected by upstanding portions;
(d) rack suspension means for supporting said rack for rotation within said closure housing about the central axis thereof comprising:
(1) a rigid generally vertically extending column coaxially aligned with said central axis of said housing;
(2) first bearing means carried by said base for rotatably supporting said column;
and
(3) second bearing means carried by said top wall of said closure housing for rotatably supporting said column said second bearing means comprising a supporting member for rotationally supporting the upper extremity of said vertically extending column said supporting member being spaced from said top wall of said closure;
(e) jet means interconnected with the source of water under pressure for directing jets of water in the direction of said rack to impart rotational movement thereto, said jet means comprising:
(1) a spray jet means for urging rotation of said rack, said means comprising a first conduit extending beneath said rack, a second generally vertically extending conduit interconnected with said first conduit and disposed proximate the periphery of said rack and a third conduit extending over said rack, a portion of said third conduit extending between said top wall of said closure and said supporting member whereby said third conduit can be superimposed over the central axis of said housing;
(2) a collimated jet means for emitting a collimated stream of water in the direction of said rack;
and
(3) control means comprising:
(i) valve means for regulating the flow of water from the source of water under pressure to said jet means;
and
(ii) diverter means disposed proximate the junction of said first and second conduits for selectively diverting the flow of water between said collimated jet means and said spray jet means said diverter means being adjustable to direct said collimated stream of water in a first direction urging counterclockwise rotation of said rack and in a second direction urging clockwise rotation of said rack.

13 more elements

A dishwasher adapted to be interconnected with a source of water under pressure, comprising:

(a) a base;
(b) a closure housing carried by said base said closure housing having interconnected top and side walls;
(c) a rack having upper and lower peripheral portions interconnected by upstanding portions adapted to support articles to be washed;
(d) rack suspension means for supporting said rack for rotation within said housing, comprising:
(1) a rigid generally vertically extending column having a journal portion at one end thereof and a male bearing portion at the opposite end thereof;
(2) a female bearing carried by said base for cooperative interaction with said male bearing portion of said column;
and
(3) bearing means carried by said top wall of said closure housing for cooperative interaction with said journal portion of said column;
(e) jet means interconnected with the source of water under pressure for directing jets of water in the direction of said rack to impart rotational movement thereto, said jet means comprising:
(1) a spray jet means for urging rotation of said rack, said means comprising a first conduit extending beneath said rack, a second generally vertically extending conduit interconnected with said first conduit and disposed proximate the periphery of said rack and a third conduit extending over said rack;
(2) a collimated jet means for emitting a collimated stream of water in the direction of said rack;
and
(3) control means comprising:
(i) valve means for regulating the flow of water from the source of water under pressure to said jet means;
and
(ii) diverter means for selectively diverting the flow of water between said collimated jet means and said spray jet means said diverter means being adjustable to direct said collimated stream of water in a first direction urging counterclockwise rotation of said rack and in a second direction urging clockwise rotation of said rack and being further adjustable to divert all of the flow of water to said spray jet means.

13 more elements

A dishwasher adapted to be interconnected with a source of water under pressure, comprising:

(a) a base;
(b) a closure housing carried by said base;
(c) a rack rotatably mounted within said housing, said rack having a lower peripheral portion and a plurality of circumferentially spaced vanes affixed to said lower peripheral portion;
(d) rack suspension means for supporting said rack for rotation within said closure housing about the central axis thereof, comprising:
(1) a rigid generally vertically extending column coaxially aligned with said central axis of said housing;
(2) first bearing means carried by said base for rotatably supporting said column;
and
(3) second bearing means carried by said top wall of said closure housing for rotatably supporting said column;
(e) jet means interconnected with the source of water under pressure for directing jets of water in the direction of said rack to impart rotational movement thereto, said jet means comprising:
(1) a spray jet means for directing a multiplicity of jets of water at said rack to urge rotation thereof, said spray jet means comprising a first conduit extending beneath said rack, a second generally vertically extending, angularly adjustable conduit interconnected with said first conduit and disposed proximate the periphery of said rack and a third conduit extending over said axis of rotation of said rack, each of said conduits being provided with a multiplicity of small holes located in a predetermined pattern to create a three dimensional water spray pattern within said closure housing to produce a scrubbing type action said second and third conduits being angularly adjustable to precisely control the direction of the spray jets relative to said rack;
(2) a collimated jet means for emitting a collimated stream of water in the direction of said vanes;
and
(3) control means comprising:
(i) valve means for regulating the flow of water from the source of water under pressure to said jet means;
and
(ii) diverter means for selectively dividing the flow of water between said collimated jet means and said spray jet means;
said diverter means being disposed proximate the junction of said first and second conduits and comprising:
(a) a section of said first conduit disposed proximate the periphery of said rack, said section of said first conduit being provided with first and second apertures;
and
(b) a control member having an aperture formed therein, said control member being movable relative to said section of said first conduit from a first position wherein said aperture therein is aligned with said first aperture in said section of said first conduit, to a second position wherein said member is blocking said first aperture and to a third position wherein said aperture therein is aligned with said second aperture.

17 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/777,174Filed 18 Sep 1985 · continuation in part
Priority: 31 May 1985
Granted: 12 Jan 1988
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

A47L 15/32
By rotating only: rotated by means of spraying water
A47L 15/0089
Washing or rinsing machines for crockery or tableware: of small size, e.g. portable mini dishwashers for small kitchens, office kitchens, boats,…
A47L 15/4219
Water supply, recirculation or discharge arrangements; Devices therefor: water recirculation
A47L 15/4289
Details: spray-pressure measuring or regulating arrangements