Oil pump for hand rail chain saw machines

Details Oil pump for hand rail chain saw machines Oil pump for hand rail chain saw machines

1983-07-07

1984-08-14

Smith, Leonard E.

Pumps

Expansible chamber type

Pumping member position controlled port

92158, F04B 2100

Patent

active

044654405

ABSTRACT:
The invention relates to an oil pump for hand rail chain saw machines in which a pump plunger has an annular groove at its end remote from the drive and which is connected via a duct to the pump oil pressure channel, so that the sucking in of secondary air, high wear and an undefined lubrication are avoided.

REFERENCES:
patent: 1958395 (1934-05-01), Renfrew
patent: 2117474 (1947-03-01), Feroy
patent: 2146184 (1939-02-01), High
patent: 3118384 (1964-01-01), Sence et al.
patent: 4231716 (1980-11-01), Kubota et al.

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