Pilot Controlled Passage In Nose Or Needle Patents (Class 137/222)
  • Patent number: 11053949
    Abstract: A bleed valve includes a housing with an inlet coupled to an outlet by a duct. A guide tube is fixed within the housing between the inlet and the outlet. A piston with a piston orifice is slideably supported on the guide tube and movable between an open position and a closed position. The duct fluidly couples the inlet to the outlet in the open position, the duct fluidly separates the inlet from the outlet in the closed position, and the piston orifice fluidly couples the inlet with the outlet in the open position and the closed position to move piston between the open position and the closed position according to differential in pressure between the inlet and the outlet of the bleed valve. Compressors, gas turbine engines, and methods of controlling fluid flow are also described.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: July 6, 2021
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Robert DeFelice, David J. Zawilinski, Scott W. Simpson
  • Patent number: 10975875
    Abstract: A bleed valve includes a housing with an inlet coupled to an outlet by a duct, a guide tube with an orifice fixed in the housing between the inlet and the outlet, a piston, and baffle. The piston is slideably supported on the guide tube and is movable between an open and a closed position, the duct fluidly coupling the inlet and outlet in the open position, the duct fluidly separating the inlet and outlet in the closed position. The orifice fluidly couples the inlet and outlet in the open and closed positions to move piston between the open and closed positions according to differential pressure between the bleed valve inlet and outlet. The baffle is slideably supported by the guide tube to set the differential pressure at which the piston moves between the open and closed positions. Gas turbines and differential pressure adjustment methods are also described.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: April 13, 2021
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Robert DeFelice, Scott W. Simpson, Josh Kamp
  • Patent number: 9689315
    Abstract: A bleed valve includes inlet and outlet housings, a hollow shaft defining a valve axis, and a full-area piston. The shaft includes a first end mounted to an inner diameter portion of the inlet housing and a second end mounted to an end cap of the outlet housing. The piston is slidably mounted to the shaft. A first chamber is defined between an upstream side of the piston and the inner diameter portion of the inlet housing. A second chamber is defined between a downstream side of the piston and the end cap of the outlet housing. An area of an upstream surface of the piston at an angle with respect to the valve axis is in fluid communication with the first chamber, and is substantially equal to an area of a downstream surface of the piston at an angle with respect to the valve axis and in fluid communication with the second chamber.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: June 27, 2017
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Francis P. Marocchini, Aaron F. Rickis, Glenn Gradischer, Robert Goodman
  • Patent number: 6164332
    Abstract: An apparatus designed to manufacture a relatively large quantity of living water for a home or business. The apparatus includes a plurality of ampuls longitudinally aligned and connected together to enable the water delivered to the upper ampul to flow in a vortex pattern from the upper ampul to the lower ampul. Each ampul has a water dispensing unit which facilitates the flow of the water in a vortex pattern therein. Each ampul includes a longitudinally aligned neck with several pairs of magnets longitudinally aligned on the neck that create magnetic fields around the water as it flows in a vortex pattern through the neck. The apparatus is designed to be connected to a household water supply system and includes an optional holding tank and control valve.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: December 26, 2000
    Inventor: Randy Hatton
  • Patent number: 4008733
    Abstract: A filling valve for a pressure fueling device, particularly for aircraft refueling, comprises a movable sleeve responsive to the flow rate of fuel through the valve and which increases the ratio between the fuel pressures acting on first and second surfaces of the valve closure unit, respectively, and exerting valve closure and opening forces, respectively, in proportion as the rate of flow increases.
    Type: Grant
    Filed: March 26, 1974
    Date of Patent: February 22, 1977
    Assignee: Zenith Aviation
    Inventors: Jacques Courant, Robert Gonnet, Marc Thore
  • Patent number: 3945393
    Abstract: Flow rate limiting valve for pipes for liquid or gaseous fluids of the type comprising a cup plug which extends telescopically from an ogival chamber contained in the valve body, and communicates with the fluid upstream of the valve seat by a channel in the fixed part and with the fluid downstream of the valve seat by a channel in the head of the cup plug, being possible to close or throttle said second channel by a needle which extends to the outside of the ogival chamber and terminates with an orthogonal disc receiving the hydrodynamic thrust of at least a part of the lines of flow of the entering fluid, comprises external control device to regulate the thrust, the lever arm and the tilt of the spring to lever which transmits the thrust of the calibrating spring to the needle, thus being possible to determine, by acting on these external means; the flow rate, the opening and the closure of the valve, along with his characteristic-curve and the flow rate value.
    Type: Grant
    Filed: August 30, 1974
    Date of Patent: March 23, 1976
    Inventor: Giuseppe Teatini