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:
Nov. 13, 1984
Filed:
Jul. 21, 1983
Applicant:
Inventor:
Lee E Stump, Brooklyn Park, MN (US);
Assignee:
Timesavers, Inc., Minneapolis, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F15B / ;
U.S. Cl.
CPC ...
92-9 ; 92 12 ; 92143 ; 92DI / ; 188316 ;
Abstract
An improved double-acting fluid cylinder with primary and secondary chambers of tandem construction, wherein the primary chamber is utilized to provide ram motion in a first direction and wherein the tandemly arranged secondary chamber is provided with a resiliently biased secondary piston to buffer and control the rate of motion induced in the ram, and also to drive the ram in a direction opposite the first direction so as to control the ultimate amplitude or extent of motion induced in the ram in response to forces applied within the primary chamber.