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:
Jul. 07, 1992
Filed:
Nov. 01, 1991
James M Broadbent, Wilbraham, MA (US);
John Kapusta, Florence, MA (US);
Keith P Paquette, Granby, MA (US);
Smith & Wesson Corp., Springfield, MA (US);
Abstract
Quality control attachment adapted to be fitted onto a threaded depth control bar of a drill press machine includes a sleeve having an axial opening for fitting onto the control bar and being longitudinally movable relative to the bar. The sleeve carries a pawl and an elastic O-ring which urges an edge portion of the pawl into engagement with the threads of the control bar for enabling one-way movement of the control bar downwardly through the sleeve. An actuator pin is slidably disposed in a bore which extends through the sleeve and is movable downwardly in response to contact with a stop-nut disposed on the bar when the drill press has advanced to a preset depth represented by the position of the stop-nut. The attachment serves to prevent retraction of the drill from a hole unless the control bar, which tracks axial movement of the drill, has moved downward sufficiently for the actuator pin to contact the stop-nut and shift the pawl outwardly of the control bar thereby ensuring that the hole has been drilled to its preset depth.