Vacuum actuated pump
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 28, 1989
Grant Date -
N/A
app pub date -
Mar 27, 1987
filing date -
Mar 27, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vacuum actuated chemical dispenser. The dispenser includes a chemical chamber and a vacuum chamber. The dispenser further includes a chemical chamber piston and a vacuum chamber piston located and movable within their respective chambers. A coil spring associated with the pistons returns the pistons to a pre-vacuum actuated position. The pistons are adjustable in order to adjust the measured amount of chemical to be dispensed from the chemical chamber.
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Cited Art Landscape
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