Transport system with blocking valve control

Details Transport system with blocking valve control Transport system with blocking valve control

1977-04-07

1980-12-23

Nase, Jeffrey V.

Conveyors: fluid current

With means to control conveying fluid or movement of load in...

Control of conveying fluid

406105, 406192, B65G 5110

Patent

active

042407680

ABSTRACT:
A pump which generates pressurized air flow in a pipeline to sweep wheeled vehicles along with the air flow is provided with a flow control mechanism. First and second blocking valves which normally prevent reverse flow of air in the pipeline but which can alternately swing open to allow a vehicle to pass are automatically moved between open and closed positions by altering the pressure differential acting on the valves. The valves are urged to the open position and air flow control mechanism associated with the pump alternately directs air against the back of the valves in response to the position of a vehicle to sequentially operate the valves to move the vehicle through the pump.

REFERENCES:
patent: 1753987 (1930-04-01), Hohne
patent: 3404638 (1968-10-01), Edwards
patent: 3556603 (1971-01-01), Liebenberg
patent: 3797405 (1974-03-01), Carstens et al.

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