Cover for rotary blade of power pruner

Details Cover for rotary blade of power pruner Cover for rotary blade of power pruner

1989-06-28

1990-11-27

Watts, Douglas D.

Cutlery

Cutting tools

With blade moving means

302961, 83821, 144251R, B26B 700, B26B 2700, B26D 500, B26G 1900

Patent

active

049725866

ABSTRACT:
A cover for a rotary blade of a power pruner having a grip portion connected to a transmission shaft for transmitting the torque of an internal combustion engine, and a rotary blade for pruning being disposed at the front end of the grip portion. The rotary blade cover has a cover portion facing at least a portion of a cutting edge of the rotary blade on the side of the grip portion and partially covering the upper and lower surfaces and the outer peripheral edge of the rotary blade so as to form a cavity in which a rotary air flow is formed.

REFERENCES:
patent: 2730803 (1956-01-01), Kimbal
patent: 3453732 (1969-07-01), Wilkin
patent: 3805639 (1974-04-01), Peter
patent: 3961548 (1976-06-01), Claassen
patent: 4218853 (1980-08-01), Willoughby et al.
patent: 4343115 (1982-08-01), Staabler et al.
patent: 4696108 (1987-09-01), Zerrer et al.

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