US Government As Represented by the Secretary of the Army

Spectra Technologies LLC

Other

USA As Represented by Secretary of the Navy

Oklahoma State University

Dover Corporation

Medtronic Ps Medical, Inc.

Body Guard, Inc.

Air Tractor Inc.

Robert L Woods

Donald W Murray

Rajamouli Gunda

Rex Wesley Shores

Gabriel A Johnston

Victor D Trotter

Karl N Reid, Jr

James B Story

Carl S Lammons

Derrick Cawthron

Silas Katz

Rex W Shores

A system for use in a surgical procedure comprising a pneumatic instrument having an inlet and an outlet, a tank fluidly coupled to the inlet of the pneumatic instrument, wherein the tank provides pressurized helium gas to power the pneumatic instrument, and a compressor fluidly coupled to the outlet of the pneumatic instrument. The compressor receives the helium gas exhausted from the pneumatic instrument and compresses the exhausted helium gas to supply the tank with pressurized helium gas.

Recycled helium gas surgical instrument

A vapor recovery, fuel dispensing nozzle possessing the capability of providing a slurpee function, i.e., removing liquid fuel from the vapor return passage of a hose that connects the nozzle to a fuel dispenser. Removal of the liquid fuel is achieved by a suction force derived from a venturi at the main control valve of the nozzle.

Vapor recovery fuel nozzle systems providing an improved slurpee function

An airborne container for a liquid or other flowable material has bottom doors which are opened to release the material on the ground below the aircraft. To maintain a specified coverage level, a control system which includes a digital controller repeatedly calculates a differential pressure across the doors and varies the position of the doors to maintain a constant material flow rate as the differential pressure varies. The control system closes the doors when a specified volume of material has been spread.

Airborne liquid-spreading system

A protective trim system is provided which protects the surface of an underlying solid body. The system includes an elongated trim member which is attached to a surface and is movable away from the surface to protect the underlying body.

Extendable protective trim

A fluidic oscillating nozzle that oscillates a fluid jet at high frequency by the use of fluidic amplification technology with no moving parts. The jet that issues from the nozzle is a zero-degree jet of fluid that maintains a very high energy density; however, due to its oscillation, its appearance is that of a fan-type jet that disperses at a fan angle from the nozzle. At a nominal distance from the nozzle, the jet covers the surface with a relatively broad area of flow while maintaining high energy impact density due to the impact effects of the non-expanding zero-degree jet.

Fluidic oscillating nozzle

A fluidic gain changer uses a fluid jet to mechanically deflect between two ets of fluidic receivers. A planar fluidic amplifier has its power jet, control jets and interaction regions bounded together to form a flexible tab than can be deflected in the third dimension. Two sets of receivers are located downstream and are offset so that the jet is evenly divided into the two sets of receivers when the tab is centered. Deflection of the tab increases the gain in one set of receivers while decreasing the gain in the other set of receivers.

Fluidic gain changer

This invention describes a system of control for a power source-transmission-load system such as might be used on an off-the-road vehicle, for example. The power source is an internal combustion engine having a known optimum characteristic of desired manifold vacuum versus engine speed. The transmission is a hydrostatic or hydromechanical transmission having infinitely variable speed ratio and having a control means for varying said speed ratio. The control system includes a transducer means for measuring engine speed and converting this quantity into an analog fluid pressure proportional to the speed. This analog fluid pressure proportional to speed is modified in a function generator to produce an analog fluid pressure which is proportional to the desired manifold vacuum as a function of engine speed. Means are provided for measuring the actual manifold vacuum and for comparing the actual manifold vacuum with the desired manifold vacuum on a continuous basis. This comparison produces an error signal which is amplified and used to control a hydraulic system to operate the control means in order to vary the transmission ratio of the hydrostatic or hydromechanical transmission to obtain a speed ratio such that will provide optimum engine conditions.

Automatic control means for infinitely variable transmission

A fluidic partial pressure sensor for measuring the partial pressure of a s constituent in a mixture relative to a reference gas. The pressure drop output of a fluidic bridge concentration sensor is connected to the aspirated input of a fluidic aspirator which is operated in its sonic or saturated region. By virtue thereof, the vacuum created in the aspirated input is directly proportional to the ambient pressure at the output of the aspirator. Since the ratio of the bridge pressure drop is therefore made constant, the output pressure of the bridge sensor is thereby directly proportional to the partial pressure of the gas constituent of interest.

Fluidic partial pressure sensor

A method and apparatus for controlling the air flow in an internal-combustion engine that comprises an unthrottled variable-timing third valve engine modification. An unthrottled full charge of air is drawn into the cylinders during the standard intake stroke of a four-stroke internal-combustion engine. During the initial portion of the succeeding compression stroke, a portion of that full charge is discharged through a third valve. Thus, the same mass of air that would result from throttled engine remains in the cylinders to be compressed. This air quantity is adjusted by means of adjusting the timing of the opening and closing of the third valve in accordance with the power requirements of the engine. A full charge of air is utilized for a full load, while a lesser charge is utilized for a partial load. Power losses which result from conventional intake air throttling are thereby eliminated.

Method and apparatus for controlling the air flow in an internal

A fluidic implementation of a constant mass airfuel ratio fuel-injection system which may be utilized, for example, in an internal combustion engine. The system includes a fluidic mass air flow sensor that produces a pressure oscillation in direct proportion to the mass air flow to the engine. The frequency of this oscillation is utilized to control a fuel flow metering device which delivers a fixed amount of fuel per oscillation cycle. In one preferred embodiment, the metering device may comprise a fixed displacement piston pump. In an alternative embodiment, the metering device comprises a constant pulse-width fluidic amplifier.

Growing community of inventors

Arlington, TX, United States of America

Robert L Woods