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:
Feb. 14, 1989
Filed:
Feb. 24, 1988
Applicant:
Inventor:
Carl E Hunt, Davisburg, MI (US);
Assignee:
GTE Valenite Corporation, Troy, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23C / ;
U.S. Cl.
CPC ...
409233 ; 279 87 ; 279 89 ;
Abstract
Central drawbar operated tooling connection system wherein a pair of wedges are positively driven laterally outward and retracted by reciprocation of a central drawbar. Mechanical advantage of a key slot between drawbar and wedges plus mechanical advantage of the wedge angle amplifies a drawbar force for producing axial loading in the order of 5:1. Alternative forms of drawbar actuation such as by screw thread feed, preloaded spring with hydraulic release are optional.