Rotary expansible chamber devices – With mechanical sealing – Seal element between abutment and cylinder or working member
Patent
1976-06-17
1978-04-25
Vrablik, John J.
Rotary expansible chamber devices
With mechanical sealing
Seal element between abutment and cylinder or working member
418147, 418248, 418249, F01C 1904, F01C 100, F04C 2700
Patent
active
040860426
ABSTRACT:
A rotary compressor is provided in which the space between the rotor and the encompassing housing wall is separated into suction and discharge spaces by reciprocating vane assemblies, each of which includes a blade portion having a distal end portion carrying a pivotal shoe, the joint between the shoe and blade being of cylinder and socket character with the blade end forming the cylinder part of the joint and the shoe having a socket cavity for receiving the cylinder. In other forms, the shoe has a generally channel shape in transverse cross section with the leg of the channel facing the compression side having vent holes which reduces the turning movement applied to the shoe under conditions of high differential pressures between one side of the shoe and the other. This arrangement promotes stability and reduces the possibility of loss of equilibrium of the shoe against the moving surface.
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Arenz E. C.
Vrablik John J.
Westinghouse Electric Corporation
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