Hydraulic priority circuit

Details Hydraulic priority circuit Hydraulic priority circuit

F - Mech Eng,Light,Heat,Weapons

15

B

138/71.1

F15B 11/16 (2006.01) F15B 13/02 (2006.01)

Patent

CA 1044568

HYDRAULIC PRIORITY CIRCUIT Abstract of the Disclosure A hydraulic priority circuit for a fork lift truck or the like includes a variable output pump controlled by a motor. The speed of the motor is controlled by feedback from a demand indicator in a primary work system, such as a hydraulic steering system, and from a demand indicator in a secondary work system, including, for example, tilt and lift hydraulic circuits. A valve means, including a priority control valve, a sequence valve, and pressure compensated flow control orifices, is provided to regulate the fluid flow requirements of the primary work system on a priority demand basis, with the excess fluid flow being coupled to the secondary work system.

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