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. 24, 2010
Filed:
Sep. 03, 2002
Arjen Brandsma, Tilburg, NL;
Johannes Gerardus Ludovicus Maria Van Spijk, Drunen, NL;
Arjen Brandsma, Tilburg, NL;
Johannes Gerardus Ludovicus Maria Van Spijk, Drunen, NL;
Bosch Transmission Technology B.V., Tilburg, NL;
Abstract
Continuously variable transmission includes a set of pulleys, each pulley comprising two discs arranged relatively axially moveable on a central pulley shaft for clamping a transmission belt. The belt includes a continuous array of transverse elements, each having lateral pulley contact surfaces for contacting the belt contact surface of each of the pulley discs, and being provided slideably on an endless tensile element of the belt. Each pulley has a mechanical stiffness as incorporated in the transmission and a stiffness related feature of a pulley when expressed as a parameter Sag that indicates an amount of radial displacement of the belt between the discs in the transmission, occurring in response to imposing a maximum amount of axial force Fax during operation of the transmission, relative to a radial position of the belt in an unloaded state of the transmission, amounts to less than 1.2 mm but more than 0.5 mm.