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:
Mar. 09, 1999
Filed:
Jul. 09, 1997
Applicant:
Inventor:
David E Boring, East Berlin, PA (US);
Assignee:
Sunoco Products Company, Hartsville, SC (US);
Primary Examiner:
Int. Cl.
CPC ...
B67D / ;
U.S. Cl.
CPC ...
222387 ; 222386 ;
Abstract
A self-venting cartridge plunger including openings defined therein and forming through air passages, each opening having an associated valve flap hinge-joined to the plunger and movable to close the opening upon the plunger encountering a greater resistance to movement than the flow of evacuating air.
Boring, David. (1999). Self venting plunger (U.S. Patent No. 5878922). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5878922
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile