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:
Sep. 22, 1992
Filed:
Aug. 16, 1991
James R Gordon, Benton, IL (US);
Gordon Belt Scrapers, Inc., Benton, IL (US);
Abstract
A resilient rotational bias device that is continuously adjustable to supply any preselected rotational bias force to a shaft, within a wide range, by rotation of a multi-step shaft retention member, usually a gear, by a simple drive such as a worm gear that engages the shaft retention member; the shaft retention member an the drive are mounted in a housing that is affixed to one end of a resilient torsion member, the other end of the torsion member being affixed to a stationary frame. All elements of the device other than the torsion member, but including a connector for connecting the shaft retention member to the end of a biased shaft, are mounted in the housing. All elements of the device, except a drive shaft for th worm gear, are usually formed of the same molding resin, preferably polyurethane.