Powered pump assembly with selective relief valve
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United States of America Patent
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Nov 23, 2004
Grant Date -
Sep 23, 2004
app pub date -
Mar 17, 2003
filing date -
Mar 17, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides a powered pumping system for filling various batch application tools with a viscous material. The system includes a motor mounted on a wheeled frame. The motor drives a slider-crank mechanism attached to a displacement pump. Affixed to the pump outlet is a relief valve having a plurality of predetermined relief pressure settings. The relief valve serves as a conduit between the pump and any one of various batch application tools while the tool is being filled with the viscous material. To initiate pumping, operators connect a filler valve of the tool to a relief valve outlet and actuate a switch. The relief valve of the present invention automatically selects a relief pressure appropriate for the particular tool based on certain physical characteristics of the particular tool. The selection of the appropriate relief pressure requires no operator intervention. Releasing the switch stops the pumping action.
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