Parker-hannifin Corporation

Other

Charles R Clark

Gerald G Steele

Bart F Bakke

Edwin J Bielecki

Lowell R Hanson

Karl A Romberger

Martin A Hobin

Richard J Clark

A metallurgical processing system for economically recovering metal values, such as columbium, tantalum, thorium, and uranium from dilute source solids, such as digestion sludges, by a series of steps including:

Recovery of metal values and hydrofluoric acid from tantalum and

A device for opening a door on an aircraft to expose a receptacle for receiving a fueling nozzle on another aircraft so that the first mentioned aircraft can be refueled in flight. The device has a hydraulically operated actuator for opening and closing the door and another hydraulically operated actuator for locking and unlocking latches engageable with the nozzle for holding it in the receptacle. The hydraulic system has a single valve for controlling flow of pressurized fluid through a single conduit to the door actuator for both door opening and door closing movement of the actuator piston. When closed, this valve isolates the hydraulic system from the pressure source so that no part of the hydraulic system is pressurized when the device is not in operation.

Aerial refueling device

A device for opening a door on an airplane to expose a refueling receptacle having latches for connection to a fueling nozzle deployed from a tanker airplane so that the airplane may be refueled in flight. The device has a hydraulic actuator for opening and closing the door, first valve means for controlling the first actuator, a second valve means for controlling another hydraulic actuator that locks and releases the latches, a spring for opening the door when there is a failure in the supply of pressure fluid for the first actuator, and a means to prevent closing of the door before the latches are released from the nozzle.

Growing community of inventors

Mission Viejo, CA, United States of America

Charles R Clark