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:
Sep. 26, 1978
Filed:
Apr. 11, 1977
Applicant:
Inventors:
David John Sheffield, Hemel Hempstead, GB;
John William Saxon, Sawtry, GB;
Assignee:
Aerpat A.G., Zug, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21J / ;
U.S. Cl.
CPC ...
72391 ; 60585 ; 7245317 ;
Abstract
Hydraulic operated blind riveting apparatus includes a pneumatic/hydraulic intensifier 23 and a reservoir 45 of hydraulic fluid for making up loss of hydraulic fluid. The reservoir is connected to the hydraulic system by a quick acting priming valve 47, actuated by the pneumatic feed to the intensifier. This priming valve is arranged to open and close before there is any effective change in pressure in the hydraulic system due to the action of the intensifier.