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:
Nov. 30, 1999
Filed:
Apr. 09, 1998
David R Sullivan, Corona, CA (US);
Other;
Abstract
A safety apparatus for use in connection with motor driven machine tools such as engine lathes of the character used to dress the brake shoe and brake pad engaging surface of automobile brake drums and rotors. The safety apparatus can be quickly and easily attached to conventional brake drum/disc dressing lathes without the necessity of substantially modifying the lathes, does not interfere with the normal machining processes and yet fully protects the operator from accidentally contacting the rotating work pieces during the dressing operation. The apparatus includes novel safety switch mechanisms which positively prevent energization of a motor of the lathe using the factory installed 'on-off' switch of the machine so long as the safety guard is in a raised position. Accordingly, required work piece set-up operations can be accomplished only through use of a specially wired foot switch which permits controlled, intermittent energization of the lathe motor by the operator.