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. 11, 2002
Filed:
Jul. 25, 2001
Charles T. Webb, Burleson, TX (US);
Roy L. Chandler, Arlington, TX (US);
Other;
Abstract
The apparatus includes an annular cam rotatably located in a housing with a drill shaft extending through the cam and housing. The shaft can be rotated for drilling purposes and be moved longitudinally in the housing for shifting purposes. The cam has grooves in its outer surface for receiving a cam follower carried by the shaft which rotates the cam as the shaft is moved longitudinally for shifting purposes. The shaft may be moved longitudinally in one direction to a position to engage members of a clutch such that when the shaft rotates, it rotates the housing. The shaft is movable in an opposite direction to disengage the clutch members and then is movable to locate the cam follower in the groove at different positions to allow the operator to control the longitudinal position of the shaft for turning purposes or for drilling straight.