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:
Jul. 02, 1991
Filed:
Mar. 06, 1990
Applicant:
Inventor:
Jean-Jacques Graffin, La Ferte Bernard, FR;
Assignee:
Etablissements A. Bertaud, Vitrolles, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D / ; F16D / ;
U.S. Cl.
CPC ...
192 / ; 192150 ;
Abstract
A tightening device of the invention comprises a transmission device comprising a first transmission member, a second transmission member mounted coaxially with the first transmission member between an abutment and a thrust member, at least one torque limiter member disposed between the second transmission member and the abutment or the thrust member, a first adjustable resilient member acting on the thrust member, and a second adjustable resilient member acting on the thrust member independently of the first resilient member and in the same direction as the first resilient member.