Rotary expansible chamber devices – Non-metallic working member – cylinder or partition
Patent
1991-07-15
1992-02-11
Bertsch, Richard A.
Rotary expansible chamber devices
Non-metallic working member, cylinder or partition
418178, 418179, 418133, F04C 2344
Patent
active
050871803
ABSTRACT:
A fluid powered vane motor for operation with a minimum of externally supplied lubrication has a motor chamber made up of a cylinder with an eccentric cylindrical bore and end plates abutting the ends of the cylinder. A rotor with a plurality of axially oriented radial slots on its circumferential surface is supported on bearing means within the chamber. Radially slidable vanes are disposed in the radial slots of the rotor so that they form a moving seal between the rotor surface and the cylinder wall. Pressurized fluid introduced to the motor chamber acts upon the vanes of the rotor and imparts rotary motion thereto. Operation with a limited amount of externally supplied lubrication is accomplished by making end plates of inherently lubricious material such as fiber-reinforced polymeric material, and by coating the innner bore of the cylinder with a soft coating having lubricious properties in contact with the selected vane material.
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Bertsch Richard A.
Cavanaugh David L.
Ingersoll-Rand Company
Palermo Robert F.
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