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. 22, 2009
Filed:
Nov. 10, 2006
Gunther Petrzik, St. Georgen, DE;
Andreas Wild, Unterensingen, DE;
Lothar Wolf, München, DE;
Thomas Kress, Dachau, DE;
Gunther Petrzik, St. Georgen, DE;
Andreas Wild, Unterensingen, DE;
Lothar Wolf, München, DE;
Thomas Kress, Dachau, DE;
GETRAG Getriebe-und Zahnradfabrik Hermann Hagenmeyer GmbH, Untergruppenbach, DE;
Cie KG and Bayerische Motorenwerke Aktiengesellschaft, Untergruppenbach, DE;
Abstract
A hydraulic circuit for a toroidal transmission comprises: a) a single pump, b) a main pressure controller connected to the pump to generate a main line pressure in a main line, c) a roller controller connected to the main line to generate two roller control pressures from the main line pressure, d) at least one hydraulic roller actuator for adjusting a roller in a toroidal space set up by two disks, the roller actuator being connected to the roller controller, e) a disk controller connected to the main line, a disk control pressure being generated in the disk controller from the main line pressure, and f) at least one hydraulic disk actuator for axially adjusting at least one of the disks, the disk actuator being connected to the disk controller.