Pneumatic amplifier controls high pressure fluid supply
Pneumatic servo system has pneumatic amplifier containing novel control valve that provides linear control of the flow rate. Fluid supply is isolated from control pressure.
Johnson, H. L.↗
Engineering topics
Trader, A. G.
Publications and source records attributed to Trader, A. G..
Subgravity simulator Patent
Apparatus for training astronaut crews to perform on simulated lunar surface under conditions of lunar gravity
Johnson, H. I.↗
Simulator effects partial gravity conditions
Adjustable apparatus which simulates partial to zero gravity partially supports the weight of convalescing patients in rehabilitation exercises. This device is an ideal tool for physical therapy.
Johnson, H. I.↗