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. 29, 1979
Filed:
Nov. 23, 1977
Applicant:
Inventor:
Fritz Bauer, Altdorf, DE;
Assignee:
Suspa Federungstechnik Fritz Bauer & Sohne OhG, Nuremberg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16F / ;
U.S. Cl.
CPC ...
267120 ; 267 / ; 296146 ;
Abstract
A gas spring suitable as a lifting means for a car hatchback includes a device to hold the gas spring piston rod in its extended position with the hatchback fully open. Such holding device comprises a pair of check valves associated with the guide piston of the gas spring whereby one such check valve is spring-biased closed so that a substantial closing force is required to initiate closing of the hatchback.