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. 12, 1988
Filed:
Mar. 18, 1987
Werner Tischer, Heubach-Lautern, DE;
Zahnradfabrik Friedrichshafen, AG., Friedrichshafen, DE;
Abstract
In a flow divider valve for pressure feed to a hydraulic circuit for auxiliary power steering and to a hydraulic circuit for a power take-off the interior of a hollow regulator piston receives pressure feed for distribution to the hydraulic circuits. For one such circuit, preferably the power take-off, flow passes via multiple bores and coacting flow control grooves of the regulator piston and a housing in which it reciprocates. Accordingly, a desired flow quantity and pressure advantages are achieved, in comparison with use of a single flow control bore which would require a larger piston traverse causing delays in pressure build-up as well as oscillations and strong flow pulses and energy loss.