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. 11, 1995
Filed:
Jul. 25, 1994
John S Agapiou, Sterling Heights, MI (US);
Robert B Trent, Farmington Hills, MI (US);
Craig R Brooks, Harrison Twp., MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An adjustable boring bar assembly is provided in which the cutting radius can be altered by predetermined increments simply by releasing and turning the bar within a sleeve of a hydraulic holder. The holder sleeve is slightly eccentrically located relative to the spindle axis, so that turning of the bar effectively changes the working radius of the cutting point. Slots on the holder, arrayed about the sleeve, are located at discrete angular positions to produce the desired radial increments. A pin on the boring bar disengages from one slot and re seats in another when the bar is released, withdrawn, turned, reinserted and re-gripped.