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. 27, 2001
Filed:
Apr. 16, 1999
Applicant:
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B67D 5/46 ;
U.S. Cl.
CPC ...
B67D 5/46 ;
Abstract
A piston for dispensing material from a commodity container includes a nose section connected to a piston shaft. A recessed channel is located between the nose section and piston shaft. In the channel, there is a seal lifter over which a solid wiping seal is placed. Upon inflation, the seal lifter forcers the wiping seal to extend beyond the periphery of the piston to come into sealing contact with the interior wall of the container.