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. 25, 1977
Filed:
Jan. 27, 1976
Applicant:
Inventors:
Bernt Soren Liljekvist, Sandviken, SW;
Anders Persson, Sandviken, SW;
Assignee:
Sandvik Aktiebolag, Sandviken, SW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175364 ; 175 53 ; 308 18 ; 308 31 ;
Abstract
In the saddle structure of the improved drill bit cutter assembly of the invention both spaced-apart legs are provided with bores each extending through the leg to receive a clamping bolt. These bores extend in directions including between them an angle of up to 90.degree.. The shaft-receiving recess, between the legs, has a polygonal shape complementing that of the end portion of the shaft.