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:
May. 31, 1994
Filed:
Feb. 22, 1993
Applicant:
Inventor:
John L Vaphiadis, Birmingham, MI (US);
Assignee:
Litton Industrial Automation Systems, Inc., Warren, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16F / ;
U.S. Cl.
CPC ...
267 6424 ; 267 6419 ; 92 9 / ;
Abstract
A counterbalance actuator is disclosed for reducing the energy required in weight lifting operations. The counterbalance actuator includes a piston and a flexible bellows attached to the piston. A bellows extension is attached to the top of the bellows with a gas impervious seal. The bellows extension permits the counterbalance actuator to achieve an extended stroke while allowing the counterbalance actuator to be collapsed to a reduced size.