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. 15, 1989
Filed:
Sep. 02, 1988
Applicant:
Inventor:
Edward Wechner, Minnamura, AU;
Assignee:
Joy Technologies Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25B / ;
U.S. Cl.
CPC ...
81 5711 ; 81 55 ; 173 57 ;
Abstract
A mining roof bolt drill pot drive wherein the drill chuck and the bolt tightening socket are coaxially mounted and permanently coupled to and simultaneously driven by a drive motor. The drill chuck is directly driven by the drive motor and the bolt socket is driven via a reduction planetary gear box giving speed reduction and torque multiplication. An automatic valve for supplying cooling water to the drill during drilling and allowing excess water together with expended sheer pins to be discharged from the base of the drill pot is also described and claimed.