Expansible chamber devices – Piston – With fluid passage in piston face
Patent
1990-03-09
1991-05-21
Kwon, John T.
Expansible chamber devices
Piston
With fluid passage in piston face
92206, 92207, 92247, 2988807, 29888073, 277173, 277176, 277168, 277 74, 277 78, F01B 3100
Patent
active
050165240
ABSTRACT:
A continuous seal ring member fitted in a ring groove of a piston of a compressor. The seal ring member has a washer-like initial shape with an internal diameter smaller than an outer diameter of the piston, whereby the inner peripheral portion of the seal ring member is expanded when the seal ring member is fitted in the ring groove. The outer peripheral portion of the ring seal member is then axially and inwardly collapsed relative to the inner peripheral portion thereof so that one of the side surfaces of the initial seal ring member constitutes an outer sealing surface for engagement with the cylinder bore and the outer peripheral portion in the original shape is arranged on the side of said compression chamber. A backup ring member fitted in the ring groove on the side of the continuous seal ring member remote from the compression chamber has a surface area abutting against the side surface of the ring groove on the side remote from the compression chamber and sufficient to retain the continuous seal ring member in the ring groove.
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Ikeda Hayato
Ishihara Shinichi
Kawai Katsunori
Kawai Toshihiro
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
Kwon John T.
Ryznic John
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