Oilless pump
United States Patent 2616615
US Patent References:
Compressor and vacuum pump
- - 1854692

Compressor
- - 2004563

Rotary pump, compressor, and the like
- - 2020525

Pump for refrigerating means
- - 2057381

Rotary compressor
- - 2251784


Inventors:
Scott, Walter A.
Publication Date:
11/04/1952
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Assignee:
LAVAL SEPARATOR CO DE
Primary Class:
418/152
Other Classes:
417/DIG.001, 418/236
International Classes:
F01C21/08; F04C29/06; F01C21/00
US Patent References:
2272926Pump
Foreign References:
CH125787A
CH147225A
GB294653A
FR620045A
FR846828A