Cleaning and liquid contact with solids – Apparatus – With means to movably mount or movably support the work or...
Patent
1979-10-12
1981-05-12
Bleutge, Robert L.
Cleaning and liquid contact with solids
Apparatus
With means to movably mount or movably support the work or...
134154, 134176, 239259, 308 72, B08B 302
Patent
active
042665655
ABSTRACT:
An upper spray arm is mounted to the underside of the upper dish rack of a dishwasher and rotates in response to a jet of water supplied through the lower spray arm. The upper spray arm mounting is provided with a self-aligning bearing which includes a stationary mounting platform attached to the upper dish rack and a flanged, cylindrical bearing connected to the spray arm. An enlarged bore in the mounting platform accommodates the bearing cylinder and permits radial movement of the bearing cylinder relative to the platform. The bearing flange transmits thrust forces to the stationary platform and slides radially relative to the platform to the extent the platform bore is larger than the bearing cylinder. Impetus for radial movement of the bearing and spray arm is produced by a bell shaped receiver located on the underside of the spray arm. An angular wall is presented to the water jet if the jet and arm should be misaligned producing a sidewardly directed force which causes corrective movement of the upper spray arm and attached bearing relative to the stationary mount and upper dish rack.
REFERENCES:
patent: 1053715 (1913-02-01), Cromwell
patent: 1977763 (1934-10-01), Gordon
patent: 3091400 (1963-05-01), Aubert
patent: 3180348 (1965-04-01), Clearman
patent: 3363950 (1968-01-01), Cole
patent: 3854762 (1974-12-01), Spiegel
patent: 3951684 (1976-04-01), LaPrad et al.
patent: 4174723 (1979-11-01), Long
Bleutge Robert L.
Whirpool Corporation
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