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:
Jul. 20, 1999
Filed:
May. 22, 1997
Johannes Braun, Buhl, DE;
Urban Panther, Seelbach, DE;
LuK Getriebe-Systeme GmbH, Buhl/Baden, DE;
Abstract
A fluid-operated system which can supply a pressurized fluid (e.g., oil) to one or more adjustable consumers (such as a clutch and/or a transmission) in a motor vehicle. The system employs one or more fluid pressurizing pumps and/or accumulators and an arrangement of valves in a path for pressurized fluid from the pressurizing unit(s) to the consumer(s). The valves can vary the fluid pressure in dependency upon at least one variable (such variable can be selected by a control unit in conjunction with an actor). In accordance with one presently preferred embodiment, the valves can cooperate with one or more flow restrictors to impart to the fluid in the path a first pressure within a first range of varying pressures as a first function of the at least one variable, and a second pressure within a second range of varying pressures as a different second function of the at least one variable. One of the valves can be embodied in or located outside of the mobile valving element and/or housing of another valve.