Cleaning and liquid contact with solids – Apparatus – With alarm – signal – indicating – testing – inspecting,...
Patent
1997-08-22
1998-11-24
Gutierrez, Diego F.F.
Cleaning and liquid contact with solids
Apparatus
With alarm, signal, indicating, testing, inspecting,...
116216, 116221, A47L 1542
Patent
active
058394583
ABSTRACT:
A dishwasher clean/dirty indicator is disclosed for showing a user whether dishes in a dishwasher are clean or dirty. The indicator is configured either as a portable or built-in device. The portable configuration is described in this abstract which begins with a frame (32), containing bearing surfaces. The frame rests within a dish rack (60) of a dishwasher (58). A release arm (44) with vertical and horizontal sections, pivots on the frame bearing surfaces. A drinking glass (62) or similar dish is placed on the horizontal section of the release arm when the dishwasher is loaded, holding the release arm in the loaded position. A release spring (54) retracts the release arm to the unloaded position when the dishwasher is emptied. A latch (48) is pivotably connected to the vertical section of the release arm. Affixed to the frame is a faceplate (34) including sign members (39) with the words clean and dirty, and a spring housing (38). Within the spring housing is a bimetallic spring (36) comprising a shaft (64). Affixed to the shaft is an indicating pointer (40). In the loaded position, the latch is in close proximity with the indicating pointer. As dishes are washed, heat introduced to the dishwasher during a normal dishwasher cycle causes the bimetallic spring to rotate the pointer toward the clean position. The latch tilts as the pointer rotates past it. Once cleared, gravity returns the latch to its upright position, latching the pointer in the clean position. The pointer remains in the clean position until the dishwasher is emptied. Emptying the dishwasher releases the release arm to the unloaded position causing the latch to move away from the pointer, which automatically re-sets the indicator to the dirty position.
REFERENCES:
patent: 3608514 (1971-09-01), Dunn
patent: 3813942 (1974-06-01), Guth
patent: 4081999 (1978-04-01), Lenken
patent: 4129954 (1978-12-01), Hulteen
patent: 4653423 (1987-03-01), Schafer
patent: 5143453 (1992-09-01), Weynant Nee Girones
patent: 5302028 (1994-04-01), Carey
Gutierrez Diego F.F.
Hirshfeld Andrew
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