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. 10, 1987
Filed:
Apr. 22, 1985
Helmut Muller, Heidenheim, DE;
J. M. Voith GmbH, , DE;
Abstract
A change spur gear of reducer unit design features two paths of force. The first path of force comprises a unit which provides gearing to high speed, a hydrodynamic torque converter and, following it, a multiple shift gear. The second path of force comprises as well a unit which provides gearing to high speed, on the high speed shaft of which there is a hydrodynamic servoclutch arranged. The secondary vane wheel connects through appropriate reducers with the transmission output. In shifting from one gear to another, the servoclutch is filled first, then the respective shift detent is disengaged under no load, the servoclutch is adjusted to the slip corresponding with the next gear thereby enabling a no-load shifting of the detent of the next gear. Upon emptying of the servoclutch, the engine moment is again assumed by the first path of force without any interruption of the traction force.