Lawn mower blade safety assembly

Details Lawn mower blade safety assembly Lawn mower blade safety assembly

1986-02-05

1987-09-29

Novosad, Stephen J.

Harvesters

Cutting

Cutter members

A01D 5518

Patent

active

046961534

ABSTRACT:
A fail-safe system for a power-driven rotary lawn mower having a conventional, propeller-like blade utilizes a bearing assembly mounted upon the drive shaft and connected to the blade by cables. Upon accidental disconnection of the blade from the shaft during operation of the machine, the cables will catch the blade and prevent its ejection, and will thrust the bearing assembly against a retaining collar rigidly mounted upon the shaft outwardly thereof. The bearing will permit free-wheeling action of the blade while retarding rotation relative to the shaft, thereby safely retaining it until the operator has an opportunity to stop the machine.

REFERENCES:
patent: 3157978 (1964-11-01), McMullen
patent: 3252304 (1966-05-01), Moody
patent: 3481124 (1969-12-01), Machovina
patent: 3545189 (1970-12-01), Gillaspie et al.
patent: 4189905 (1980-02-01), Frantello
patent: 4205510 (1980-06-01), Raniero
patent: 4357789 (1982-11-01), Rodish
patent: 4413468 (1983-11-01), Hockersmith
patent: 4428184 (1984-01-01), Hoff

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