Dry air rotary pump or compressor

Details Dry air rotary pump or compressor Dry air rotary pump or compressor

1976-01-30

1977-09-27

Husar, C. J.

Rotary expansible chamber devices

With mechanical sealing

Axially movable end wall or end wall portion

252 12, 418152, 418153, 418179, F04C 1500

Patent

active

040508552

ABSTRACT:
A dry air rotary pump or compressor comprises a pair of flexible diaphragm type sealing plates which are clamped on the opposite ends of a stator housing by end heads to form a cylindrical pump cavity and to be pressedly contacted with the opposite end faces of a rotor driven within the pump cavity so as to provide the sealing between the suction and compression chambers of the pump or compressor. Each of the sealing plates is made of a composite consisting essentially, by weight, of 10.0 - 75.0% carbon and/or graphite, 0.1 - 60.0% molybdenum disulfide, 1.0 - 20.0% fluorine resin and the remainder, which is greater than 25.0% of the total composition by weight, being heat resistant synthetic resin without fluorine resin to have a coefficient of elasticity greater than 200 Kg/cm.sup.2.

REFERENCES:
patent: 2662483 (1953-12-01), Smith et al.
patent: 2665056 (1954-01-01), Orban
patent: 2833465 (1958-05-01), Cable
patent: 3050009 (1962-08-01), Lowry
patent: 3187993 (1965-06-01), Rhodes
patent: 3191852 (1965-06-01), Kaatz et al.
patent: 3193190 (1965-07-01), Lindberg
patent: 3233524 (1966-02-01), Charlson
patent: 3282222 (1966-11-01), Raufeisen et al.
patent: 3433166 (1969-03-01), Birkmeier
patent: 3776845 (1973-12-01), Watanabe et al.
patent: 3808130 (1974-04-01), Schifer et al.

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