Lubricating-oil pump control

Details Lubricating-oil pump control Lubricating-oil pump control

1988-05-31

1990-11-06

Smith, Leonard E.

Pumps

Expansible chamber type

Pumping member position controlled port

184 33, F04B 4900

Patent

active

049682300

ABSTRACT:
The invention is directed to a motor-driven apparatus such as a motor-driven chain saw and the like having a lubricating-oil pump and an oil supply for a work tool and to apparatus for varying the reciprocatory stroke distance of the oil piston or pumping member to thereby provide selective regulation of oil flow from full flow to through no flow in response to the stroke distance of the pumping member.

REFERENCES:
patent: 2070203 (1937-02-01), Gregg
patent: 2347364 (1944-04-01), Palumbo
patent: 2688989 (1954-09-01), Smith
patent: 3486455 (1969-12-01), Jemison
patent: 3914073 (1975-10-01), Fusco
patent: 4636147 (1987-01-01), Schweitzer et al.
patent: 4644658 (1987-02-01), Dolata et al.
patent: 4678411 (1987-07-01), Weiland
patent: 4797073 (1989-01-01), Kubato

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