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:
Mar. 01, 1977
Filed:
Nov. 24, 1975
Applicant:
Inventor:
Walter Wallace, Kensington, CT (US);
Assignee:
Cushman Industries, Incorporated, Hartford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B / ;
U.S. Cl.
CPC ...
279 / ; 279-4 ; 279119 ;
Abstract
A chuck having radially movable jaws and axially extending jaw-operating levers pivotally mounted intermediate their ends to form shorter and longer arms, of which the shorter arms are operatively connected with the jaws, and the longer arms provide counterbalances for the jaws and are in follower engagement with wedge surfaces on an inward flange formation on a sleeve piston in an outer ring-shaped power cylinder which lengthwise is more or less coextensive with the jaw-operating levers.