Dispensing – Including timer – For timing dispensing period
Patent
1985-11-21
1987-03-24
Rolla, Joseph J.
Dispensing
Including timer
For timing dispensing period
222504, 251 16, 251 52, 13762411, B67D 508
Patent
active
046519076
ABSTRACT:
A preferred cleaning system (10) is disclosed which includes a hydraulic timer valve (22) which is in fluid communication with a cleaning chemical dispenser (14) and a water supply (12). The hydraulic timer valve (22) preferably includes a bearing arrangement (44) which is spring biased toward a first end (56) of a timer housing (52). When a water supply valve (20) is opened, water flows into housing (52) to cause the bearing arrangement (44) to move from its first position to a second position. When the bearing arrangement (44) reaches its second position, water flow from the water supply (12) to the chemical dispenser (14) is prevented. The movement of the bearing arrangement (44) from its first position to its second position takes a preselected period of time determined by the flow resistance produced by a control valve (35) which controls the flow of water to one side of the bearing arrangement (44) of valve (22). When the water supply (12) is blocked, the valve (22) automatically resets. The bearing arrangement (44) is moved from its second position to its first position and the water which formerly coerced the bearing arrangement (44) so as to block the flow of water to the dispenser (14) is forced out of the housing (52) through lines (24 and 38) and vented to the atmosphere.
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Economics Laboratory Inc.
Huppert Michael S.
Rolla Joseph J.
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