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. 06, 1983
Filed:
Feb. 25, 1981
Applicant:
Inventors:
Richard P Adams, Dewey Rose, GA (US);
Charles Christian, Jasper, GA (US);
Assignee:
Royston Manufacturing Corporation, Royston, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16P / ;
U.S. Cl.
CPC ...
192134 ; 100 53 ; 1921 / ; 403 31 ;
Abstract
In a mechanical press brake, a photoelectric sensor causes extension of an air cylinder in the linkage between the operating pedal and the clutch lever, thereby disabling the pedal whenever the operator's hand or arm is in dangerous proximity to the machine's ram. The piston of the air cylinder is connected to the pedal through a lost-motion, and the pedal is continuously urged toward its rest position by a spring. The lost-motion and spring prevent repeated extension and retraction of the cylinder from causing dangerous and annoying operation of the pedal during preparation for a forming operation.