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:
Oct. 18, 2016
Filed:
Jan. 27, 2014
Applicant:
Plas-pak Industries Inc., Norwich, CT (US);
Inventor:
Charles M. Frey, Groton, CT (US);
Assignee:
PLAS-PAK INDUSTRIES INC, Norwich, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 45/40 (2006.01); B05C 17/005 (2006.01); B65D 83/00 (2006.01);
U.S. Cl.
CPC ...
B29C 45/40 (2013.01); B05C 17/00579 (2013.01); B65D 83/005 (2013.01); B65D 2205/04 (2013.01);
Abstract
A piston has a one-piece body having a first portion and a second portion. The second portion is integrally formed with the first portion, is flexibly movable between a first position and a second position relative to the first portion, and is biased toward the first position. The first portion has an orifice, and the second portion has a seal member. When the second portion is disposed in the first position, the seal member is disposed in a sealed arrangement with the orifice, and when the second portion is disposed in the second position, the seal member is disposed in an unsealed arrangement with the orifice.