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:
Jun. 13, 1978
Filed:
Nov. 18, 1976
Applicant:
Inventor:
George Cecil Derbyshire, Sheffield, EN;
Assignee:
The Jacobs Manufacturing Company, Limited, Sheffield, EN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23B / ;
U.S. Cl.
CPC ...
279 62 ; 279 16 ;
Abstract
A drill chuck including a main body part having jaws slidably mounted for converging movement in respective guides. A nut member is rotatably mounted on said main body part and has screwthreaded engagement with the jaws. A cylindrical sleeve is connected at one end to the nut member and at its other end surrounds a portion of a further body part. The further body part, which is provided with mounting means for connecting the chuck to a power tool driving spindle, has an initial degree of co-axial alignment with the main body part but a self-centering action is allowed when drilling.