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:
Mar. 27, 1990
Filed:
Jan. 30, 1989
Charles E Kraus, Austin, TX (US);
Excelermatic Inc., Austin, TX (US);
Abstract
In an infinitely variable transmission wherein two toric traction discs are rotatably supported in a housing opposite one another so as to define therebetween a toric cavity in which at least two motion transmitting traction rollers are disposed in engagement with the toric discs and supported by pivot trunnions, each pivot trunnion is provided with a single support roller disposed on a track section and has an axial control end which is supported so as to be slightly movable in a plane normal to the axis of the toric discs and hydraulic control means are provided for controllably moving the trunnion control ends for initiation of a transmission ratio change and a feedback structure is further associated with the trunnion ends and with the hydraulic control means for terminating ratio changing tilting of the trunnions when the necessary transmission ratio change has been executed.