Patent ID: 11953032
Assignee: CATERPILLAR INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A hydraulic pump or motor with a mounting configuration for transferring torque, comprising:
a shaft defining a longitudinal axis, a Y-axis extending upwardly and orthogonally from the longitudinal axis, and an X-axis extending orthogonally to the longitudinal axis, and the Y-axis;
a housing defining a first longitudinal end, a second longitudinal end, and a cavity that extends from the first longitudinal end to the second longitudinal end;
a plurality of mechanical components including one hydraulic interacting component that are disposed in the cavity; and
a manifold cap attached to the second longitudinal end that defines an inlet and an outlet;
wherein a mounting flange is disposed at the first longitudinal end of the housing, the shaft extends from the cavity past the first longitudinal end of the housing and through the mounting flange, the mounting flange defining 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, the mounting flange further defines a pilot projection comprising an O-ring groove arranged along a length of the pilot projection and facing laterally to receive an O-ring, the pilot projection configured for aligning the pump or motor with a recess in an adjoining device and sealing a joint between the pump or motor and the adjoining device against passage of fluid, the pilot projection extending longitudinally away from the mounting flange, defining a pilot projection diameter, and a ratio of the X dimension to the pilot projection diameter ranges from 1.1 to 1.5.