Extended spray pump
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 20, 1982
Grant Date -
N/A
app pub date -
Oct 31, 1980
filing date -
Oct 31, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A continuous, extended spray pump which has two opposing and coaxial chambers. The upper chamber is fitted with an upper and middle piston urged upwardly by a spring, and the lower chamber is fitted with an opposing piston urged upwardly by a spring. A port connects the space between the two upper pistons with the external atmosphere, and a one-way check valve controls the liquid flow between the upper and lower chambers.
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Family
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Cited Art Landscape
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