Piston-type compressor

Details Piston-type compressor Piston-type compressor

1987-07-17

1988-07-05

Smith, Leonard E.

Pumps

Motor driven

Internal-combustion engine

417372, 137855, F04B 902, F04B 3902

Patent

active

047551100

ABSTRACT:
A piston-type compressor for gaseous media, e.g. a brake air compressor for automotive vehicles, particularly a compressor having capacity control means, is provided with an externally arranged lubricant pump for supplying the lubricant from a storage reservoir which is positioned below the compressor to a lubrication circuit of the compressor. A downwardly extending return line for the lubricant is provided between the otherwise enclosed crankcase of the compressor and the storage reservoir. In order to prevent a build-up of superatmospheric pressure in the crankcase, a self-acting check valve is installed in the return line the check valve serving to block flow of lubricant through the return duct toward the crankcase of the compressor.

REFERENCES:
patent: 1546570 (1925-07-01), Dennedy
patent: 1872805 (1932-08-01), Peterson
patent: 1927799 (1933-09-01), Mann
patent: 2646212 (1953-07-01), Kellie
patent: 2781632 (1957-02-01), Meijer

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