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:
Aug. 25, 1998
Filed:
Mar. 26, 1997
Roland Almeras, Tournon, FR;
Patrick Herelier, Tournon, FR;
Societe de Prospection et d'Inventions Techniques (S.P.I.T.), Bourg-les-Valence, FR;
Abstract
The apparatus comprises along the riser (10) a return chamber with a front space (30) and a rear space (22) adapted to communicate with the combustion chamber (15) following a first displacement of the riser (10). Once the two spaces (30, 22) have been brought into communication with one another, they are separated from one another and the riser (10) is returned towards the rear in the barrel (9). The two spaces (30) and (22) communicate with one another during the displacement of the riser (10) and the rear space (22) is separated from, the front space (30) following a second forward displacement of the riser (10). As the rear space (22) communicates with the exterior of the apparatus, the expansion of the combustion gases trapped in the front space (30) then returns the riser (10) towards the rear into the firing position. The apparatus serves to fix components to a support material.