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. 18, 1986
Filed:
Feb. 27, 1985
Applicant:
Inventor:
Lawther O Smith, Doylestown, PA (US);
Assignee:
Fichtel & Sachs Industries, Inc., Colmar, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16F / ;
U.S. Cl.
CPC ...
267 34 ; 16289 ; 16306 ; 267120 ; 267121 ;
Abstract
A gas spring-assisted counterbalance system for a closure member, e.g., the rear door of a hatchback automobile, includes a mechanical spring connected in series with a gas spring. The system is arranged so that the gas spring reaches its fully retracted position before the door is fully closed, after which the door is closed against the force of the mechanical spring. Longitudinal vibrations or short movements of the system which otherwise would impart undesired short stroke cycles to the gas spring are absorbed by the mechanical spring, thereby enhancing the operating lifetime of the gas spring.