Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1981-03-26
1983-11-01
Noland, Kenneth W.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
192 41R, B66B 1104
Patent
active
044126000
ABSTRACT:
A hydraulic elevator for ascending and descending operation of a car by feeding or discharging a hydraulic fluid through a flow rate control device between a hydraulic pump connected to a reversible motor and a hydraulic cylinder. The elevator includes a one-way clutch connected between the motor and the hydraulic pump so as to transmit the normal driving force of the motor to the hydraulic pump in the ascending operation of the car and to apply regenerative braking force to the hydraulic pump in the descending operation of the car when the revolution speed of the hydraulic pump is increased over the synchronous speed of the reverse rotation of the motor.
REFERENCES:
patent: 2932257 (1960-04-01), Lupin
patent: 3841093 (1974-10-01), Smith
"Hydraulics & Pneumatics"; Salmon et al.; pp. 53-56; Jun. 1979.
Ito Takuzo
Miyake Tatsuro
Suzuki Tadashi
Mitsubishi Denki & Kabushiki Kaisha
Noland Kenneth W.
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