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:
Dec. 13, 1983
Filed:
Mar. 09, 1981
Applicant:
Inventor:
Gildas Le Pierres, Boutigny-sur-Essone, FR;
Assignee:
Vibrachoc, Saint Cloud, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F41F / ;
U.S. Cl.
CPC ...
89 4 / ; 89 4 / ;
Abstract
The recoil cushioning device comprises a recoiling member guided in a fixed member with cushioning means comprising a constant volume chamber placed between two diaphragms, said chamber being subdivided into three areas separated by constrictions. A recovery spring is compressed during recoil. When the recoil amplitude is adequate a bearing surface is applied against a cushion, which increases rigidity.