Atomizing pump dispenser
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jun 23, 1981
Issued Date -
N/A
app pub date -
Feb 8, 1977
filing date -
Apr 30, 1976
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A pump which will atomize a liquid without dribble is formed of a pump body having a pump chamber with a throat at the bottom thereof; a pump stem and piston assembly disposed in the chamber for reciprocal motion therein, an axial bore being formed through the bottom of said piston and stem terminating in an axial outlet port; a valve member having a top section sealing against said axial port and a bottom section passing through and sealing said throat after the initial operation when said pump is operated; and a spring biasing said valve member upward. The sealing area at the axial port is selected so as to be less than the sealing area at the throat at the bottom of the chamber whereby when a predetermined pressure is reached within the pump chamber the net force exerted on the valve member acts against the spring to open the axial port to the stem causing material to be dispensed at the predetermined pressure without dribbling.
First Claim
Other Claims data not available
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International Classification(s)
- 1977 Application Filing Year
- B05B Class
- 64 Applications Filed
- 1 Patents Issued To-Date
- 1.57 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 62 Citation Count
- B05B Class
- 0 % this patent is cited more than
- 44 Age