Rotary mechanism having at least two camming elements

• Main Author: GROVE; LESLIE H
• Format: Patent
• Language: English
• Published: 07.10.1975
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; STEAM ENGINES; WEAPONS

Rotary mechanisms for fluid power motors or pumps or speed changers which have two or more camming elements. In a 2-element rotary mechanism, one camming element has a simple cam profile and the other has follower rollers. A 3-element mechanism has a third camming element to provide two sets of cam profiles and follower rollers. When used as a fluid pressure device, it is mounted in either of two ways: (a) with each of the three elements on a unique fixed axis or (b) with the outer and inner elements on common fixed axes and the intermediate element floating, its axis orbiting said common axes. For valving the latter arrangement, at least one inboard rotary valve plate turns with the intermediate element, and an outboard, usually stationary, valve plate is attached to the outer element adjacent each rotary plate.