Pruner with power driven extension

Details Pruner with power driven extension Pruner with power driven extension

1989-03-15

1990-05-15

Yost, Frank T.

Cutlery

Cutting tools

With blade moving means

30276, 302961, 30383, A01G 308, B27B 1702

Patent

active

049245732

ABSTRACT:
An improved pruner having a housing assembly provided with telescoping sections, a telescoping drive shaft assembly contained within the housing, a cutting head at one of the drive shaft assembly, and a power source at the other end and further including, as an improvement, a power driven gear system including reduction gears and reversing gears, and a worm drive engaging a rack mounted upon the telescoping sections of the housing for extending or collapsing the housing and hence the pruner. A shift lever adjacent a pruner handle actuates the worm drive to extend or collapse the pruner to provide a pruner of desired length.

REFERENCES:
patent: 1364432 (1921-01-01), Georgelis
patent: 1858015 (1932-05-01), Hodgson
patent: 2462314 (1949-02-01), Fuqua
patent: 2777483 (1957-01-01), Cheren
patent: 4207675 (1980-06-01), Causey et al.
patent: 4347880 (1982-09-01), van der Merwe
patent: 4654471 (1987-04-01), Fettes et al.
patent: 4733471 (1988-03-01), Rahe

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