Method for energy storage for DC motor powered load hoisting...

Details Method for energy storage for DC motor powered load hoisting... Method for energy storage for DC motor powered load hoisting...

2007-06-12

2007-06-12

Salata, Jonathan (Department: 2837)

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific load support drive-means or its control

Includes control for power source of drive-means

C187S297000

Reexamination Certificate

active

10773483

ABSTRACT:
A method for energy storage and recovery for load hoisting equipment driven by a diode controlled DC motor and having an inverter controlling an induction motor which drives a flywheel whereby, utilizing rest power such as reverse power from the DC motor when lowering a load and unused power at small load or idle to accelerate rotation of a flywheel, whereby energy is stored, and the system is reversed when a load is lifted and power is consumed whereby the flywheel causes the induction motor to generate power and deliver it to the DC motor.

REFERENCES:
patent: 4399892 (1983-08-01), Watanabe
patent: 5712456 (1998-01-01), McCarthy et al.
patent: 5900597 (1999-05-01), Fernkas
patent: 5909017 (1999-06-01), Born et al.
patent: 5936375 (1999-08-01), Enoki

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