Pneumatic weight lift assist apparatus

Details Pneumatic weight lift assist apparatus Pneumatic weight lift assist apparatus

1991-11-21

1992-09-15

Bahr, Robert

Exercise devices

User manipulated force resisting apparatus, component...

Utilizing fluid resistance

482 99, 482113, A63B 21008

Patent

active

051472635

ABSTRACT:
A pneumatic weight lift assist apparatus utilizes a cylinder with an air pressure powered piston. The air pressure power is provided by a vacuum pump driven by an electric motor. The piston is connected to a weight stack by a series of pulleys and a cable. The piston may also be connected directly to a handle to provide direct resistance to a weight lifter. The power output of the piston is controlled by a variable speed electronic switch connected to the pump motor.

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