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:
Jul. 23, 2002
Filed:
Jun. 27, 2001
Applicant:
Inventors:
Michael Stiefel, Skokie, IL (US);
Jacques E. Hoffman, Lincolnwood, IL (US);
Assignee:
Intertech Corporation, Skokie, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23Q 3/08 ;
U.S. Cl.
CPC ...
B23Q 3/08 ;
Abstract
A hydraulically driven extending clamp is disclosed having a pivoting main body which includes an extendable clamping rod disposed therein. The clamping rod extends above the pivot and is extended by air pressure and retracted by a spring internal to the clamping rod. A retaining member extends through a slot in the clamping rod and forms a travel limit stop as well as a retraction spring contact point. A hydraulic cylinder pivots the main body in seesaw-like fashion to apply clamping forces.