Power plants – Pressure fluid source and motor – Utilizing lubricant – starter motor – cooling fluid – or fluid...
Patent
1995-06-21
1997-03-11
Lopez, F. Daniel
Power plants
Pressure fluid source and motor
Utilizing lubricant, starter motor, cooling fluid, or fluid...
60468, 244135A, F16D 3102
Patent
active
056090277
ABSTRACT:
A refueling cart, for refueling large aircraft at a major airport having pressurized fuel hydrants at loading/unloading aprons, includes auxiliary facilities on the refueling cart that are usually powered by compressed air that is obtained from compressed-air bottles carried on the cart. To avoid the labor and annoyance of checking and refilling the bottles of compressed air, a small air compressor is carried on the refueling cart and is powered by a fluid motor that is in turn powered by the flowing pressurized fuel. A variable orifice is placed in the path of the fuel flowing from a hydrant to the airplane. The pressure generated across the variable orifice by the flowing fuel pushes a small amount of fuel in a path that bypasses the orifice. That bypass path includes the fluid motor, and the bypassing fuel at the pressure difference generated by the orifice drives the fluid motor. The flow of fuel to the airplane is not constant but varies as the planes tank(s) are filled. The area of the orifice is controlled by a spring-loaded plate that moves under the force of the springs to reduce the area of the orifice as the flow rate of the fuel is reduced (which reduced fuel flow rate would normally result in a reduced pressure difference across the orifice), so as to maintain a nearly constant pressure difference across the orifice over a wide range of fuel flow rates.
REFERENCES:
patent: 2735717 (1956-02-01), Harman
patent: 2973714 (1961-03-01), Oishei
Product Advertisement for Refueling Cart, Airport Business, May 1995, p. 26.
Flyer for Refueler Cart, dated 1992-1993, Rampcart, Rampmaster Modular Refueling, P.O. Box 510, Coatsville, PA 19320 USA.
U.S. Air Force Technical Manual for Part No. 015HC-Z001, prepared by Beta Systems, Inc., 1 Oct. 1975 (two pages).
U.S. Air Force Technical Manual for Part No. 062HC-Z001, prepared by Beta Systems, Inc., 15 Jan. 1981 (two pages).
1200 GPM Air-Transportable Hydrant Cart, Product brochure of Beta Systems, Inc., approximately Feb., 1995 (two pages).
Beta Fluid Systems, L.L.C.
Dosse, Esq. William G.
Lopez F. Daniel
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