Cutlery – Cutting tools – Saw
Patent
1986-04-11
1987-08-04
Kazenske, E. R.
Cutlery
Cutting tools
Saw
30383, 184 151, 417500, F16N 1314
Patent
active
046836594
ABSTRACT:
A chain saw is provided with an oil pump for supplying oil to the saw chain. The pump includes a piston immersed in a chamber formed in the housing of the saw and rotatable by a gear rigidly connected to the piston and rotated by another gear driven by a motor. The gear connected to the piston has an inclined end face which wobbles upon the rotation of the gear and is pressed by a helical spring against a supporting ball which is positioned in a recess of a flange bolt manually turnable from the outside of the housing. The path of adjustment of the supporting ball is greater than the diameter of the piston. The working pressure generated by the spring is translated directly to the piston.
REFERENCES:
patent: 1747245 (1930-02-01), Johanson et al.
patent: 2104590 (1938-01-01), Hill
patent: 2896459 (1959-07-01), Jemison et al.
patent: 3068961 (1962-12-01), Stihl et al.
patent: 3844380 (1974-10-01), Batson
patent: 4231716 (1980-11-01), Kubota et al.
Schneider Helmut
Wunsch Steffen
Zilly Gunter
Folkerts Michael D.
Kazenske E. R.
Robert & Bosch GmbH
Striker Michael J.
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