Hydraulic motor and hydrostatic power transmission using such motor
AssigneeCompagnie de Construction Mecanique Sulzer
InventorsJose Mallen-Herrero, Daniel Leroy
Life of this patent
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Abstract
A hydraulic motor comprises vanes slidable axially in lodgings of a rotor against a continuous stator bottom surface. The motor works with a hydrostatic transmission of power applied to rolling stock. The bottom surface has recesses formed therein on movable elements of stator wherein a constant pilot pressure is fed to said movable elements and the motor is a self regulated variable capacity motor since the capacity thereof results from the depth of the recesses due to the opposition of two forces, one from the pilot pressure and the other from a pressure coming from the resisting torque.
Claims19
A hydrulic motor usable with a hydrostatic power transmission applied to underground or aerial rolling stock, both on rails and roads comprising
- a stator having a continuous bottom surface with recesses,
- a rotor having lodgings therein,
- vanes axially slidable in said rotor lodgings against said continuous bottom surface,
- said stator having movable elements forming said recesses,
- means to deliver a constant pilot pressure behind said stator movable elements to reduce the capacity of the motor,
- means to produce an active pressure increased by the resisting torque of a load between said rotor and said movable elements of said stator whereby the force of the active pressure will overcome the force of the pilot pressure to increase the capacity of the motor including said vanes and said movable elements with motor capacity determined by the depth of said recesses,
- the motor being self-regulated of variable capacity working at constant pressure through variations of its capacity.
Dependencies are inferred from the claim text.