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. 23, 1976
Filed:
Mar. 27, 1975
Applicant:
Inventor:
Donaldee Brewer, Muscatine, IA (US);
Assignee:
Bandag, Incorporated, Muscatine, IA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29H / ; B24B / ;
U.S. Cl.
CPC ...
157 13 ; 51248 ; 82 49 ;
Abstract
A sharpening device for the rotatable cutting rasp of a tire buffing machine comprises a cylindrical rotatable sharpening stone carried at the free end of an arm which is pivoted to the frame of the machine to allow the operator to bring the stone into contact with the rotating rasps. Engagement of the edge of the rasp with the periphery of the stone causes the stone to rotate at lower speed than the rasp due to an adjustable spring-biased brake acting on the stone. An adjustable stop arrangement prevents over-sharpening.