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:
Aug. 03, 1999
Filed:
Mar. 18, 1997
Robert W Britzke, Rogers, AR (US);
H Alan King, Rogers, AR (US);
Rogers Tool Works, Inc., Rogers, AR (US);
Abstract
A wear prevention device for use with roadmilling or trenching machine blocks which hold rotatable cutting bits. The wear prevention device includes a substantially cylindrical retainer sleeve with a longitudinally directed slot running the length of the sleeve. The wear prevention device also includes a substantially circular wear washer with a radially inwardly directed key which is adapted to fit within the sleeve slot, thereby interlocking the sleeve and the wear washer. The retainer sleeve is adapted to receive a shank of a cutting bit and is placed within a bore in a machine block. The machine block bore may further include a keyway, or the machine block may include a boss surrounding the machine block bore with the keyway The retainer sleeve may further include a radially outwardly directed key adapted to fit within the machine block bore keyway, thereby further interlocking the retainer sleeve with the machine block.