Rescue spreading tool

Details Rescue spreading tool Rescue spreading tool

1992-09-29

1994-03-29

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Single throw lever

Mechanically actuated

72705, B66F 300

Patent

active

052977803

ABSTRACT:
A light weight, quiet and emergency safe, portable "jaws of life" spreading tool actuated by an electric motor. Full high torque at any position, with spreading or cutting motions under high loads is achieved by the use of a rotary, multiple stage, speed reducing gearbox driven by the motor. The gearbox contains an input stage from the electric motor running on a 12 volt DC power supply, and a compound planetary output stage. The arms or jaws of the device are separately driven by the planetary or spindle gears and, for convenience, are attached to external rings on the gears, by heavy duty pins.

REFERENCES:
patent: 2580829 (1952-01-01), Peck
patent: 4333330 (1982-06-01), Porter
patent: 4721016 (1988-01-01), Burandt
patent: 4742730 (1988-05-01), Dorn et al.
patent: 4825723 (1989-05-01), Martin
patent: 4842249 (1989-06-01), Weigand
patent: 4896862 (1990-01-01), Ganley
patent: 5085407 (1992-02-01), Lonon
patent: 5106354 (1992-04-01), Russ et al.
patent: 5120285 (1992-06-01), Grimm

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