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:
Jan. 24, 1984
Filed:
Feb. 08, 1982
Applicant:
Inventors:
Vinod K Sarin, Lexington, MA (US);
Peter Oberhauser, Sudbury, MA (US);
Assignee:
GTE Laboratories, Inc., Waltham, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175413 ; 175410 ; 403348 ;
Abstract
In a mine tool of the type having a drive body holding a bit, the bit and drive body include complimentary and mating surfaces wherein one pair of surfaces are adapted to be in overlapping relationship when the bit is twisted in a direction opposite the rotational direction for detachably mounting the bit to the drive body.