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:
Feb. 13, 2007
Filed:
Jun. 29, 2001
Johannes Gerardus Ludovicus Maria Van Spijk, Drunen, NL;
Hendrikus Adrianus Arnoldus Pelders, Warwickshire, GB;
Johannes Gerardus Ludovicus Maria Van Spijk, Drunen, NL;
Hendrikus Adrianus Arnoldus Pelders, Warwickshire, GB;
Van Doorne's Transmissie B.V., Tilburg, NL;
Abstract
A hydraulically controllable constant speed drive, includes an input shaft () provided with an input pulley (), an output shaft () provided with an output pulley () and a drive belt (). Each pulley () is provided with two pulley sheaves () that are mutually axially displaceable under the influence of a hydraulic pressure to be exerted in a piston-cylinder assembly () associated with the pulley () and that define a tapered groove of variable axial width wherein the drive belt () is accommodated. An input spring () is provided that realizes an axial force urging the pulley sheaves () of the input pulley () towards each other to prevent slip of the drive belt () when the hydraulic pressure is negligible.