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:
Jun. 09, 1992
Filed:
Mar. 06, 1990
Minoru Yamaguchi, Ichinomiya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A roller driving apparatus in a roller hearth kiln which has a plurality of ceramic rollers arranged across a kiln tunnel. The ceramic rollers rotate to move articles to be heat treated while conveying them. A rotary drive shaft connects the ceramic roller through a holder and a cylindrical metallic connection pipe which is mounted on the other end of the holder and which includes a positioning aperture formed therein. A leaf spring is fixedly mounted with one end on the holder, and the other end being engageable with the positioning aperture of the connection pipe. The opposite driven end of the ceramic roller is supported on a pair of metallic receiver rollers through a metallic coil spring which is wound on the driven end of the ceramic roller.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile