Cutlery – Cutting tools – Plural cooperating blades
Patent
1998-03-12
1999-11-23
Watts, Douglas D.
Cutlery
Cutting tools
Plural cooperating blades
30249, B26B 1500
Patent
active
059877545
ABSTRACT:
An electric cable cutter is provided which can shorten the working time period, which allows the cutting work to be performed with a rotational torque corresponding to the kind of a work piece, and which has a clutch mechanism that, when a torque repulsion force of a predetermined level or higher is exerted, can cut off a power transmission mechanism.
In a configuration wherein the rotational torque of an electric motor is transmitted to a cutter unit via a planetary gear reduction mechanism, the torque is transmitted via a plurality of gears (a constrained-gear train) which are rotatably disposed on a stationary portion and function as means for transmitting the rotational torque from a driving gear disposed in the final stage of the planetary gear reduction mechanism to a rotary blade. In the planetary gear reduction mechanism, projections are disposed on a side face of an internal gear constituting the planetary gear reduction mechanism, and a clutch mechanism is disposed in which a ball urged by a spring is abutted against a position between the projections. The cutter unit is configured by a stationary blade, and the rotary blade in which a sector gear is formed on the outer periphery.
REFERENCES:
patent: 4898249 (1990-02-01), Ohmuri
patent: 5067240 (1991-11-01), You
patent: 5642566 (1997-07-01), Hirabayashi
patent: 5897454 (1999-04-01), Cannalirto
Hirabayashi Shigeru
Isobe Masashi
Makita Toyoji
Izumi Products Company
Japan Storage Co., Ltd.
Watts Douglas D.
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