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. 14, 1993
Filed:
Jul. 24, 1992
Ronald Billett, Sunnyvale, CA (US);
Other;
Abstract
A cylindrical pulley over which a belt or web is looped is composed of a series of flat, annular discs, each of which rotates about its own individual axis, all discs closely adjacent to its neighbors so that the aggregate of discs forms the cylindrical pulley. All rotating disc axes are parallel and all are inclined at a chosen angle to the aggregate pulley axis creating a belt contact surface that moves laterally as well as peripherally. All discs revolve about bearing carriers that are rotated together in outboard bearings to change the orientation of the angled discs with respect to the traveling belt. Thus a belt wrapped about the pulley can be made to move in a direction perpendicular to its travel direction at a rate defined by the degree to which the individual discs deviate from the aggregate pulley axis. More importantly the belt can be made to reverse its direction of lateral travel by opposite positioning of the disc carrier group for which purpose several operating means are shown.