Rotary expansible chamber devices – With mechanical sealing – Seal element between working member and cylinder
Patent
1994-01-13
1995-09-26
Bertsch, Richard A.
Rotary expansible chamber devices
With mechanical sealing
Seal element between working member and cylinder
418 1, 418179, 277 26, F01C 1908
Patent
active
054529972
ABSTRACT:
A rotary device in which a seal is formed between the rotor and the stator end members by a sealing material having a coefficient of thermal expansion which is greater than that of the material of the end member in which said sealing material is located. When exposed to normal service temperatures, the sealing material bulges out of the parent material to fill in the gap between the end member and the rotor. The sealing material is wearable such that as it expands into engagement with the rotor, it will eventually wear until it no longer contacts the mating surface and a small gap or "minimal clearance" exists.
REFERENCES:
patent: 3464362 (1969-09-01), Ross
patent: 3612545 (1971-10-01), Storms
patent: 4449422 (1984-05-01), Fuehrer et al.
patent: 4560332 (1985-12-01), Yokoyama et al.
patent: 4923377 (1990-05-01), Cavalleri
patent: 5169298 (1992-12-01), Hekman et al.
patent: 5181843 (1993-01-01), Hekman et al.
Exhibit A is a photocopy of Devcon package for "Plastic Steel Putty (A)".
Exhibit B is a photocopy of Devcon package for "Putty Hardener 0200".
Exhibit C is a photocopy of Devcon product data bulletin for "Plastic Steel Putty (A)".
Hekman Edward W.
Hekman Frederick A.
Autocam Corporation
Bertsch Richard A.
Freay Charles G.
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