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. 29, 1981
Filed:
Oct. 09, 1979
Manfred Rattunde, Bad Homburg, DE;
P.I.V. Antrieb Werner Reimers Kommanditgesellschaft, Bad Homburg, DE;
Abstract
An infinitely variable cone-pulley transmission of the type including two pairs of cone pulley sheaves, each mounted on a respective shaft, a transmission member circulating between the pairs of pulley sheaves, a pressure cylinder at least partly defined by one pulley sheave of each pair and including a piston, a control valve supplying hydraulic pressure medium to each cylinder chamber, with the pressure being distributed between the two cylinder chambers in order to control the transmission ratio between the pulley sheave pairs, and a torque sensor associated with one of the shafts and active to control the hydraulic pressure in one of the chambers as a function of the torque on that one of the shafts, is supplemented by a two-part presser device which responds to the torque on one of the shafts in order to press one of the pulley sheaves on that shaft against the transmission member with a force which is a function of that torque.