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:
May. 11, 1976
Filed:
Dec. 30, 1974
Applicant:
Inventors:
Richard L Markus, Bridgeport, CT (US);
William P Hidden, Wenham, MA (US);
Daniel F Hefler, Concord, MA (US);
Assignee:
The Milford Rivet & Machine Company, Milford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21J / ;
U.S. Cl.
CPC ...
227-1 ; 227 51 ; 60539 ;
Abstract
A hydraulically actuated power cylinder reciprocates a driver to exert a compressive force to upset a rivet with the power cylinder's movement being made to correspond to the movement of a pump cylinder by a fluid connection therebetween. The pump cylinder's movements are mechanically actuated according to a programmed cam and actuation is made to occur only during the riveting cycle by a control circuit operating a clutch and brake with the circuit inhibiting operation upon the sensing of a malfunction.