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:
Aug. 04, 1987
Filed:
Jan. 31, 1986
Applicant:
Inventor:
George C Derbyshire, Sheffield, GB;
Assignee:
The Jacobs Manufacturing Company, Limited, Sheffield, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B / ; B23P / ;
U.S. Cl.
CPC ...
279 62 ; 29243 ; 29438 ; 29444 ;
Abstract
A drill chuck having a cylindrical sleeve connected to its bevel gear element and a rearward part of the sleeve being rotatable on a cylindrical portion of the chuck body, the chuck body being formed with a number of localized swellings at the surface of the cylindrical portion to retain the sleeve in position, the swellings having been formed by plastic deformation of the metal of the body part.