Rotary expansible chamber devices – With mechanical sealing
Patent
1989-05-23
1991-10-08
Bertsch, Richard A.
Rotary expansible chamber devices
With mechanical sealing
277 94, 277235B, 277 5B, F16J 1532, F04C 2700
Patent
active
050550152
ABSTRACT:
A seal structure comprises a combination of a dynamic seal assembly which is active while a rotary body is rotating and a static seal assembly which is active while the rotary body is not rotating. The dynamic seal assembly includes a seal member mode of low friction material. On the other hand, the static seal assembly has an elastically deformable seal member. A rotary receptacle bore has two different diameter sections. The dynamic seal assembly is designed and sized to be installed in a smaller diameter section of the bore and the static seal assembly is designed and sized to be installed in a larger diameter section. The seal structure is assembled by inserting the dynamic seal between the smaller diameter bore section via the larger diameter section. Subsequently, the static seal is inserted into the larger diameter section.
REFERENCES:
patent: 3608914 (1971-09-01), Harby
patent: 3825272 (1974-07-01), Townsend
patent: 4737087 (1988-04-01), Hertell
patent: 4743184 (1988-05-01), Sumikawa et al.
patent: 4755115 (1988-07-01), Akaike
patent: 4781553 (1988-11-01), Nomura et al.
Atsugi Motor Parts Company Limited
Bertsch Richard A.
Cavanaugh D. L.
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