Patent Number: 6,296,455

Title: Pump enable system and method

Abstract: A pump enable system includes a variable-displacement piston pump having a displacement control device. The displacement control device controls displacement of pistons in the pump based on a position thereof, and a position control system in the pump controls a position of the displacement control device based on a load on the pump. An over-ride system selectively over-rides the position control system such that the displacement control device assumes a position which reduces displacement of the pistons in the pump.

Inventors: Backer; Robert D. (Rouzerville, PA), Hall; David Alan (Hagerstown, MD), Johnston; Robert William (Greencastle, PA)

Assignee: Grove U.S. L.L.C.

International Classification: F04B 49/06 (20060101); F04B 49/02 (20060101); F04B 49/03 (20060101); F04B 049/00 ()

Expiration Date: 10/02/2018