Rotary screw machine with two intermeshing gate rotors and two i

Details Rotary screw machine with two intermeshing gate rotors and two i Rotary screw machine with two intermeshing gate rotors and two i

1979-03-19

1981-04-14

Vrablik, John J.

Pumps

Expansible chamber type

Having separate noncyclic valve

418195, 418196, F04B 4902, F01C 112, F01C 2112, F04C 2908

Patent

active

042616913

ABSTRACT:
This invention relates to a rotary fluid machine (e.g. a compressor) of the single screw type, the single screw cooperating with rotary toothed gate rotors to define fluid-filled chambers whose volumes vary as the screw rotates. The invention is concerned with the provision of two or more capacity-regulating valves provided for the chambers of such a machine, the operating members of such valves being arranged such that one member can be moved independently of the other or others.

REFERENCES:
patent: 1989552 (1935-01-01), Good
patent: 3205874 (1965-09-01), Renshaw
patent: 3756753 (1973-09-01), Persson et al.
patent: 4028016 (1977-06-01), Keijer
patent: 4043704 (1977-08-01), Zimmern
patent: 4074957 (1978-02-01), Clarke et al.

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