Harvesters – Motorized harvester – With randomly-operative control of motor
Patent
1975-08-25
1977-08-30
Eskovitz, Jay N.
Harvesters
Motorized harvester
With randomly-operative control of motor
200157, 200331, A01D 7520
Patent
active
040445321
ABSTRACT:
A safety switch for a cordless electric device such as a lawnmower or other gardening tool. The device includes a cutting or working implement such as a rotating blade, an electric motor, a battery power supply and an electric switch for connecting the battery to the motor. To prevent accidental operation of the device, a switch control lever is provided which requires two separate and independent motions to be made before the switch can be activated. A switch enclosure is provided which receives the switch operating lever in a close fitting manner. Structure is provided for permitting movement of the operating lever to a position external of the housing; from this position, it can be grasped and moved to the switch-actuation position by a separate motion. The structure permitting movement of the lever may comprise, for example, an access opening in the housing which is separate from the opening in which the lever rests or it may comprise an independent lever-operating member.
REFERENCES:
patent: 3131277 (1964-04-01), Brenzen
patent: 3212244 (1965-10-01), Wilgus
patent: 3564186 (1971-02-01), Mittelstadt et al.
patent: 3581480 (1971-06-01), O'Connor et al.
patent: 3603065 (1971-09-01), Weber
patent: 3849620 (1974-11-01), Melisz
Bloom Leonard
Eskovitz Jay N.
Murphy Edward D.
The Black and Decker Manufacturing Company
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