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:
Sep. 19, 1978
Filed:
Dec. 10, 1976
Applicant:
Inventor:
Edward J Bouplon, Streetsboro, OH (US);
Assignee:
Chicago Pneumatic Tool Company, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175 84 ; 64 235 ; 166 82 ;
Abstract
A drill rod table bushing arrangement which supresses drill steel whip while drilling under high thrust loads, and also prevents drill cuttings from accumulating on the drill table. A power operated ball wedge is operative to engage a drill rod, while high pressure air jets prevent drill cuttings from getting into the bushing.