Oil pump

Details Oil pump Oil pump

1985-12-20

1987-07-07

Smith, Leonard E.

Pumps

Expansible chamber type

Pumping member position controlled port

92 137, 74 22R, 74838, 74501R, F04B 706, F16N 1320, F15B 1624, F16C 110

Patent

active

046784110

ABSTRACT:
An oil pump is disclosed for a motor-driven apparatus and in particular for lubricating the cutting chain of a chain saw. The oil pump has a pump piston that is rotatable about its longitudinal axis and has a control cam for its axial reciprocation, which as it revolves comes into contact engagement with a control bolt. A control slide upon which a biasing force is exerted is associated with the pump piston. The stroke of the pump piston is limited during normal operation by means of the control slide. If an increased amount of lubricating oil is required, the limitation on the piston stroke effected by the control slide is overcome by moving the control slide away from the pump piston counter to its biasing force, so that the pump piston can move through its maximum total stroke as predetermined by the control cam.

REFERENCES:
patent: 2056434 (1936-10-01), Multer
patent: 4000790 (1977-01-01), Seufer
patent: 4023435 (1977-05-01), LaDue
patent: 4034830 (1977-07-01), Mukai
patent: 4486155 (1984-12-01), Roca-Nierga

Affiliated with

Also associated with

Rating

Oil pump does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Oil pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oil pump will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1660106