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. 16, 1997
Filed:
May. 31, 1996
William Harvey Frearson, Letchworth, GB;
Terence Gilbert, Welwyn Garden, GB;
John William Saxon, Sawtry, GB;
Avdel Textron Limited, Welwyn Garden, GB;
Abstract
In a fastener installation tool, return of a head piston (22) is effected by the application of air under pressure to the rear side of the piston. The end of the head cylinder body on the rear side of the piston is provided with a removable end member (34) which is displaceable away from a position in which it is safely secured to the head cylinder body (14). Also, the tool further includes a safety device in the form of air vent means (64) which, if the end member is displaced beyond a predetermined amount, opens to vent air under pressure from the head cylinder body on the rear side of the head piston (22), thereby preventing the return of the head piston and thus the further operation of the tool.