Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Patent
1996-03-27
1999-02-02
Matecki, Katherine
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
254266, 212285, 415 5, B66D 100
Patent
active
058654267
ABSTRACT:
A human power amplifier includes an end-effector which is grasped by a human operator and applied to a load. The end-effector is suspended, via a rope, from a take-up pulley, winch or drum which is driven by an actuator to lift or lower the load. The end-effector includes a force sensor which measures the vertical force imposed on the end-effector by the operator and delivers a signal to a controller. The controller and actuator are structured in such a way that a predetermined percentage of the force necessary to lift or lower the load is applied by the actuator, with the remaining force being supplied by the operator. The load thus feels lighter to the operator, but the operator does not lose the sense of lifting against both the gravitation and inertial forces originating in the load. The operator has direct contact with the load (through the end-effector) there need be no switches, valves, keyboards, teach pendents, or pushbuttons in the human power amplifier to control the lifting speed of the load.
REFERENCES:
patent: 2940608 (1960-06-01), Underwood et al.
patent: 3921959 (1975-11-01), Ulbing
patent: 3940110 (1976-02-01), Motoda
patent: 4557659 (1985-12-01), Scaglia
patent: 5489032 (1996-02-01), Mayhall, Jr. et al.
Matecki Katherine
Steuber David E.
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