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:
May. 20, 1980
Filed:
Oct. 20, 1978
Horst Muschelknautz, Crailsheim, DE;
Voith Turbo GmbH & Co., KG, Crailsheim, DE;
Abstract
A hydrodynamic control coupling having a toroidal working chamber defined by a primary bladed wheel connected with a driving motor and a secondary bladed wheel connected to the driven element; a draining device for draining working fluid from the working chamber; a filling pump supplies working fluid to the working chamber; a valve varies the filling flow to the working chamber; the valve is a flow divider comprised of two interconnected valves including respective valve elements mounted in tandem on a common shaft which is shiftable axially; each of the interconnected valves includes a respective valve seat; as one valve element is moved away from its valve seat; the other valve element is simultaneously moved toward its valve seat; at least one of the valve elements and its seat is tapered to an acute cone angle, with other conically tapered shapes also being disclosed for one or both of the valve element and/or valve seat; one valve chamber supplies working fluid to the working chamber; the other valve chamber delivers the working fluid outside the working chamber.