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. 11, 1976
Filed:
Dec. 16, 1974
Applicant:
Inventor:
Rene Pornin, Arthez-de-Bearn, FR;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16F / ;
U.S. Cl.
CPC ...
188313 ; 188299 ; 272130 ;
Abstract
A liquid-operated tubular shock-absorber capable of exerting an adjustable force, comprises two concentric tubes fixed one inside the other with a narrow annular spacing between their walls, and a piston provided with a spindle sliding in sealing-tight relationship in the inner tube to define two chambers therein; in the end regions the spacing between the tubes communicates with both chambers inside the inner tube to form a closed circuit which is filled with liquid. A needle valve for regulating the flow of liquid are provided. The shock-absorber is particularly useful in physical training as a very reliable exerciser which operates in both compression and traction.