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:
Jan. 05, 1982
Filed:
Feb. 11, 1980
Donald J Parquet, Burlington, IA (US);
Donald R King, Burlington, IA (US);
J. I. Case Company, Racine, WI (US);
Abstract
A priority flow divider is disclosed for dividing hydraulic fluid flow between a steering circuit and an auxiliary circuit thereby providing better efficiency and greater productivity for the auxiliary circuit. The priority flow divider includes a cylindrical housing having a slidable spool valve therein, and the housing further includes an inlet port connected to the steering pump in the steering circuit, a discharge port connected to the steering valve, in the steering circuit, and a discharge port connected to the auxiliary hydraulic circuit. The spool valve has enlarged cylindrical portions which are connected by recessed connecting portions of a reduced diameter. When the steering valve is in its neutral or non-steering position, the enlarged cylindrical portions of the spool valve selectively engage interior wall portions of the cylindrical housing to define an interior fluid connecting chamber between the inlet port from the steering pump and the discharge port to the auxiliary circuit whereby the fluid flow from the steering pump is diverted to the auxiliary circuit except for a small pilot flow. Actuation of the steering valve causes the spool valve to be shifted to define an interior fluid connecting chamber between the inlet port from the steering pump and the discharge port to the steering valve whereby all of the fluid flow is directed to the steering valve and none to the auxiliary circuit.