Caterpillar Inc.

Ramalho Stive

Justin Douglas Speichinger

Paul Alan Rousseau

Darren Joseph Hopf

Aurelien Herve Bernard

Ernest Everett Stoops

Travis Neale Richards

Dwanz Mwalimu Mwasi

Matthew David Roley

Michael Lemoyne Repscher

Michael Robert Kunde

Charles Eric Nail

Bart Jerome Bradford

A hydraulic pump or motor includes a mounting flange that is disposed at the first end of the housing. The mounting flange defines a pair of bolt receiving slots that are disposed along the X-axis on either side of the shaft. The pair of bolt receiving slots each define a radius center that are spaced away from each other a X dimension, and a pilot projection extends longitudinally away from the mounting flange, defining a pilot projection diameter. A ratio of the X dimension to the pilot projection diameter ranges from 1.1 to 1.5.

Hydraulic pump or motor with mounting configuration for increased torque

A hydraulic circuit for a pair of cylinders of an articulation system includes a pump, a reservoir, a directional control valve (DCV), a pair of actuator valves (AVs) and an articulation charge circuit (ACC). The DCV is fluidly coupled to the pump, the reservoir and the pair of cylinders via a supply line, a fluid return line and a pair of cylinder supply lines (CSLs) respectively. Each CSL has a load check valve (LCV) therein. The AVs are fluidly coupled with the DCV and the pump via a pilot supply line (PSL) for actuating movement of the DCV. The ACC, associated with the PSL and each cylinder supply line downstream of the associated LCV, charges a corresponding CSL with fluid from the PSL for increasing a pressure in the corresponding CSL when the pressure in the corresponding CSL falls below the pressure of fluid associated with the PSL.

Articulation system for an earthmoving machine

Growing community of inventors

Isle d'Abeau, France

Ramalho Stive