Housing and cutting line assembly for vegetation cutting apparat

Details Housing and cutting line assembly for vegetation cutting apparat Housing and cutting line assembly for vegetation cutting apparat

1979-07-26

1981-06-09

Peters, Jimmy C.

Cutlery

Blades

Rotary

56 127, A01D 5000

Patent

active

042715954

ABSTRACT:
A housing and cutting line assembly for a vegetation cutting apparatus of the type which cuts with rapidly moving lines extending from a rotating housing includes metallic line guides taking a configuration which addresses the effective guiding of the extending of the lines exteriorly of the housing and the dissipation of heat from the lines. The line guides each have a trailing side wall bearing surface for the associated line, which includes two linear surface portions angularly disposed with respect to one another, and a leading side wall bearing surface which includes a linear surface portion and a curvilinear surface portion. The linear leading side wall surface portion is substantially uniformly spaced from an inner, linear trailing side wall bearing surface portion, and the curvilinear surface portion of the leading side wall bearing surface curves away from this inner surface portion. In addition, the lines guides each in part define an air channel for moving air on the leading side of the associated line relative to the line guide to cool the line, and each further define an air cavity therein, located to trail the associated line, for conducting heat generated in the line away from the line.

REFERENCES:
patent: 4138810 (1979-02-01), Pittinger
patent: 4148141 (1979-04-01), Hoff
patent: 4190954 (1980-03-01), Walto

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