The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 28, 1999
Filed:
Jan. 12, 1998
Applicant:
Inventors:
Donald D Foster, St. Charles, MO (US);
John Patrick Hinson, St. Charles, MO (US);
Assignee:
Continental Sprayers International, Inc., St. Peters, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B67D / ;
U.S. Cl.
CPC ...
22215313 ; 2223219 ;
Abstract
A manually operated reciprocating liquid pump of the type comprising a plunger that reciprocates vertically in a pump chamber to dispense liquid from a container to which the pump is attached includes a vent opening to vent air to the interior of the container as liquid is drawn from the container by the pump. The pump plunger locks in its vertically downward position in the pump chamber and is provided with a stopper that plugs the vent opening and prevents liquid in the container from passing through the vent opening when the plunger is in its locked position.