Cutlery – Combined cutlery or combined with ancillary feature – With means to apply transient fluid to tool
Patent
1992-03-05
1993-02-09
Watts, Douglas D.
Cutlery
Combined cutlery or combined with ancillary feature
With means to apply transient fluid to tool
30382, 83169, B23D 5904, B23D 5702, B26D 708
Patent
active
051844036
ABSTRACT:
The invention is directed to a motor-driven chain saw having a drive motor which drives a saw chain via a sprocket with the saw chain running around the periphery of the cutter bar in a guide groove formed in this periphery. A brake device is provided to bring the saw chain to standstill which is actuated by a brake lever. In addition, the drive motor continuously drives a lubricating-oil pump which is mounted in a feed line between the supply tank and a outlet opening of the guide groove. The supply of lubricating oil is interrupted when the saw chain is brought to standstill. This is achieved by providing a blocking valve in the feed line which is closed during idle operation of the drive motor and is opened during load operation of the drive motor.
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patent: 4847999 (1989-07-01), Nagashima
Heyrana Sr. Paul M.
Ottesen Walter
Stihl Andreas
Watts Douglas D.
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