Patents Assigned to Westinghouse Air Brake Company
  • Patent number: 6761253
    Abstract: A spring applied parking brake assembly for a railway vehicle is provided which automatically activates upon removal of a railway car from the pneumatic braking system of the railway vehicle. The spring applied parking brake assembly comprises a casing which is mounted on or within the braking system, typically alongside the air cylinder. This casing contains a spring member and a piston assembly, both of which are mounted for longitudinal movement within the casing upon the application and/or removal of pneumatic pressure within the casing. The piston assembly includes a piston rod which is associated with the force transfer lever of the braking system such that upon a removal of pneumatic pressure within the casing, longitudinal movement of the piston rod causes this force transfer lever to rotate and apply a force to at least one force transmitting member in the vehicle braking system to initiate a brake application.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: July 13, 2004
    Assignee: Westinghouse Air Brake Company
    Inventors: Wajih Kanjo, Scott Natschke
  • Publication number: 20040057841
    Abstract: Method and apparatus for heating gases cooled by an aftercooler that receives hot gases from a compressor. The method includes the steps of directing at least a portion of said hot gases to means for bypassing the aftercooler, and using the bypass means to direct hot gases to a location that receives cooled gases from the aftercooler. The hot gases are used at the location to heat the cooled gases when ambient temperature is at or below freezing, and are used downstream from the aftercooler when moisture freezes in the aftercooler.
    Type: Application
    Filed: September 12, 2003
    Publication date: March 25, 2004
    Applicant: WESTINGHOUSE AIR BRAKE COMPANY
    Inventors: Walter E. Goettel, Brian L. Cunkelman, Daniel G. Wagner, Roger Drummond
  • Publication number: 20030030229
    Abstract: Gasket for sealing between flanges in a pressurized fluid system. A central opening is disposed within an inner periphery of the gasket, the inner periphery being curved toward the central opening. Fluid pressure on the inner periphery is reacted by hoop tension in the gasket. The outer periphery of the gasket has concave segments between fastener holes so the area of the gasket is substantially less than the area of the flanges. In this manner, the clamping pressure exerted by the flanges on the gasket is increased.
    Type: Application
    Filed: June 21, 2002
    Publication date: February 13, 2003
    Applicant: WESTINGHOUSE AIR BRAKE COMPANY
    Inventor: Ronald J. Shaffer
  • Patent number: 6499613
    Abstract: A vehicular coupler comprises a head for coupling to an opposed, generally identical coupling head of a vehicle for mechanically connecting two vehicles together. Such coupler includes a beam member for connecting to the underside of one of such vehicles. A housing is slideably connected to the beam member and a cushioning device is connected to the coupling head. The coupling head has a rearward extension located in the housing. Primary shear bolts or pins extend through walls of the housing and into the rearward extension of the cushioning device. Secondary shear bolts or pins extend through the beam member and into the housing. Retaining bolts are secured to the housing and have upper portions located above an upper surface of the housing. A longitudinal relief area is provided in the beam member, with the upper portions of the retaining bolts being located in the relief area.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: December 31, 2002
    Assignee: Westinghouse Air Brake Company
    Inventors: Curtiss A. Grau, George C. Mullis
  • Publication number: 20020179384
    Abstract: A lightweight backing plate for use with at least one of a railway brake shoe and a disc brake pad. Such lightweight backing plate being formed from a predetermined polymeric material selected from a group consisting of unsaturated polyester, polyphenylene sulfide, glass epoxy, phenolic polymers and various combinations thereof.
    Type: Application
    Filed: July 18, 2002
    Publication date: December 5, 2002
    Applicant: WESTINGHOUSE AIR BRAKE COMPANY
    Inventor: Raj Velayutha
  • Patent number: 6481722
    Abstract: Gasket for sealing between flanges in a pressurized fluid system. A central opening is disposed within an inner periphery of the gasket, the inner periphery being curved toward the central opening. Fluid pressure on the inner periphery is reacted by hoop tension in the gasket. The outer periphery of the gasket has concave segments between fastener holes so the area of the gasket is substantially less than the area of the flanges. In this manner, the clamping pressure exerted by the flanges on the gasket is increased.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: November 19, 2002
    Assignee: Westinghouse Air Brake Company
    Inventor: Ronald J. Shaffer
  • Patent number: 6474748
    Abstract: An electronic vent valve for an electronically controlled pneumatic (ECP”) braking system having a plurality of braking sites at which a braking force can be applied. The ECP braking system includes a master controller processing circuit, individual braking control units located proximate each of the braking sites and a brake pipe supplying compressed air to the braking sites. The electronic vent valve is in fluid communication with the compressed air carried by the brake pipe and has an open position for substantially venting the compressed air from the brake pipe and a closed position for substantially retaining the compressed air within the brake pipe. The electronic vent valve includes a control circuit for causing the valve to open during emergency braking operations, thereby assuring a rapid decrease in the brake pipe pressure.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: November 5, 2002
    Assignee: Westinghouse Air Brake Company
    Inventor: Brian L. Cunkelman
  • Patent number: 6378668
    Abstract: A spring applied parking brake assembly for a railroad vehicle braking system is provided for an automatic application of the parking brake in the absence of an air source. The spring applied parking brake assembly comprises a cylindrical casing containing a piston assembly. The piston assembly is mounted for longitudinal movement within the casing upon the application and/or removal of pneumatic pressure to the piston assembly. The piston assembly is associated with a force transfer lever of the braking system so as to apply a force to this force transfer lever upon longitudinal movement of the piston assembly. At least one spring member is provided within the cylindrical casing.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: April 30, 2002
    Assignee: Westinghouse Air Brake Company
    Inventors: James M. Zemyan, Roger V. Lewis
  • Patent number: 6360998
    Abstract: An apparatus for determining the presence of a third rail disposed between parallel railroad tracks as a train progresses along said parallel railroad tracks and further for determining the relative direction of motion of said third rail with respect to said first two rails and further for determining the rate at which the third rail moves with respect to the first rails is disclosed, which is a low power radar sensor disposed underneath the rail vehicle and directed toward the rail on the opposing side of the vehicle. In a preferred embodiment, two rail detectors are shown which are disposed on opposite sides of the rail vehicle. The radar detectors are coupled with an onboard computing device and with other components of an advanced train control system which can be used for precisely locating the train on closely spaced parallel tracks and further for updating and augmenting position information used by the advanced train control system.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: March 26, 2002
    Assignee: Westinghouse Air Brake Company
    Inventors: David H. Halvorson, Joe B. Hungate, Stephen R. Montgomery
  • Patent number: 6340211
    Abstract: A method of changing between two operator stations in a cab of a locomotive for controlling the brakes of the locomotive and of a train of railway cars connected to the locomotive. The stations each have at least one brake handle and an associated selector switch, with each of the switches being electrically connected to a brake control computer. The method includes stopping the train if the train is in motion and placing the brake valve handles of the stations in a position to apply the brakes at full service. One of the operator stations is selected as an active station for braking the train while the other station is selected to be inactive. Signals are directed from the selector switches at the operator stations to the computer, the signals indicating which of the two stations is active and inactive. The computer is provided with the software that accepts a valid transition to the station selected by the operator as the active station.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: January 22, 2002
    Assignee: Westinghouse Air Brake Company
    Inventors: Michael J. Joyce, Jr., Charles L. Crawford, Daniel J. Wolf, David J. Pcsolar, Winslow K. Duff
  • Patent number: 6324789
    Abstract: A door support and drive mechanism for a door can be mounted either over or in a door opening in a transit vehicle or other structure. The mechanism includes a tube which has a longitudinal slot. The mechanism also has mounts attached to the tube for mounting the mechanism to the structure over the door opening, so that the tube is substantially horizontal and the slot is along a lower portion of the tube. The mechanism includes at least one door hanger which has an upper portion movably disposed within the tube and a depending portion passing through the slot, the depending portion being for attachment to the door. The mechanism has a drive nut attached to the door hanger. A drive screw is positioned in the tube, engaging a threaded inner portion of the drive nut. The drive screw is connectable to a rotary power device to be rotated thereby. Rotation of the drive screw causes longitudinal movement of the drive nut and the hanger to which the drive nut is attached, so that the door is moved longitudinally.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: December 4, 2001
    Assignee: Westinghouse Air Brake Company
    Inventor: Erich P. Stephen
  • Patent number: 6321922
    Abstract: A shock-resistant coupler for a vehicle includes a substantially hollow draft gear tube and a coupler head. The draft gear tube has an inside surface, and the coupler head has a flexible, substantially hollow shank portion. The shank portion has a distal end that extends into one end, or mouth, of the draft gear tube. A collar on the distal end features a predetermined number of longitudinally extending relief grooves. Formed in the shank portion adjacent the distal end thereof are at least two slots that extend longitudinally from the collar. These slots enable the distal end of the shank portion to be compressed inwardly so that the shank portion may be inserted into the draft gear tube. A plurality of shear bolts, directed radially through openings in the draft gear tube and corresponding threaded holes in the collar, enable the shank portion to be secured against the inside surface of the draft gear tube.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: November 27, 2001
    Assignee: Westinghouse Air Brake Company
    Inventors: Steven C. Rumsey, Zoltan Kovacs, David S. Preuninger
  • Publication number: 20010044273
    Abstract: Method and apparatus for heating gases cooled by an aftercooler that receives hot gases from a compressor. The method includes the steps of directing at least a portion of said hot gases to means for bypassing the aftercooler, and using the bypass means to direct hot gases to a location that receives cooled gases from the aftercooler. The hot gases are used at the location to heat the cooled gases when ambient temperature is at or below freezing, and are used downstream from the aftercooler when moisture freezes in the aftercooler.
    Type: Application
    Filed: July 10, 2001
    Publication date: November 22, 2001
    Applicant: WESTINGHOUSE AIR BRAKE COMPANY
    Inventors: Walter E. Goettel, Brian L. Cunkelman, Daniel G. Wagner, Roger Drummond
  • Patent number: 6305756
    Abstract: An empty/load brake control system mountable on a sprung and an unsprung member of a railway car and disposed between the car brake control valve and brake cylinder for adjusting the brake cylinder pressure during a brake application according to the car load condition. Such system includes an empty/load sensor valve device and a sensor arm coupled to a sensor cable whose movement is controlled by a sprung member and a terminal member disposed on an end of sensor cable, in contact with sprung member so that any downward movement of sprung member forces such terminal member in a similar downward direction and similarly pulls on the sensor cable. A piston, under pressure, urges the sensor arm to rotate and retract sensor cable but must overcome resistance of a spring. The system includes a load proportional valve.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: October 23, 2001
    Assignee: Westinghouse Air Brake Company
    Inventors: Daniel G. Scott, Mark S. Krampitz
  • Patent number: 6305504
    Abstract: An improved car mounted brake assembly is provided wherein the brake assembly includes a brake cylinder, a slack adjuster and a pair of brake beams mounted at each end of the car mounted brake assembly and actuated by the brake cylinder via a series of levers and linkages and wherein the improvement comprises a suspension system for suspending each of the brake beams within a corresponding railway vehicle truck arrangement. Each of the brake beams have a brake head attachable to each end thereof and each of the brake heads carries a brake shoe thereon which is positioned for engagement with a respective railway vehicle wheel during a brake application. The railway vehicle truck arrangement within which the brake beams are suspended includes a pair of truck side frames and a truck bolster member.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: October 23, 2001
    Assignee: Westinghouse Air Brake Company
    Inventor: Michael E. Ring
  • Patent number: 6305313
    Abstract: A temperature indicator for indicating when a specified temperature has been exceeded in a fluid flow through a conduit. Such conduit having an aperture and the temperature indicator being mountable in such aperture and engagable therewith such that the temperature indicator projects through such aperture and into such fluid flow in such conduit. The temperature indicator includes a housing which substantially encloses an internal chamber and has a bore extending from the internal chamber to an external surface of the housing. An indicator member is disposed, at least in part, within the internal chamber and extends into the bore. A biasing element is disposed within the internal chamber and exerts a biasing force between the housing and the indicator member and urges the indicator member toward the bore. A bonding agent forms a bond between the indicator member and the housing to thereby restrain the indicator member from movement toward the bore under action of the biasing element.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: October 23, 2001
    Assignee: Westinghouse Air Brake Company
    Inventors: Brian L. Cunkelman, Jennifer L. Ray
  • Patent number: 6302664
    Abstract: An axial load resistant anti-rotation bearing for a rotary scroll compressor is disclosed. The rotary scroll compressor includes stationary and orbiting scroll elements and a drive mechanism for driving the orbiting scroll element in an orbit about the stationary scroll element. The stationary and orbiting scroll elements are intermeshed and nested to form at least one spiraling compression pocket therebetween. The at least one compression pocket generates forces which tend to force the stationary and orbiting scroll elements apart in a direction parallel to their central axes. The axial load resistant anti-rotation bearing disclosed resists such axial separating forces and employs two rotational bearing components, a first rotational bearing component mounted on the interior of the compressor housing and a second rotational bearing component mounted on the orbiting scroll element.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: October 16, 2001
    Assignee: Westinghouse Air Brake Company
    Inventors: Michael V. Kazakis, Charlie E. Jones
  • Patent number: 6302247
    Abstract: A brake shoe mounting system for railway vehicles includes a composition type brake shoe having a recessed center portion and two bracket-style backing plates integrally molded into the composition type brake shoe. There is one bracket style backing plate per each half of the brake shoe. Each bracket style backing plate further includes at least two projections extending outwardly from the convex surface of the composition brake shoe. The two projections extending outwardly are closely adjacent a first end of the brake shoe and at least one projection extends outwardly from the convex surface of the brake shoe closely adjacent the recessed center portion of the composition type brake shoe. The mounting system further includes a brakehead having a concave surface with a central projection for engaging the recessed center portion of the convex surface of the brake shoe.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: October 16, 2001
    Assignee: Westinghouse Air Brake Company
    Inventors: Joseph C. Kahr, Thomas W. McCabe
  • Patent number: 6298878
    Abstract: The present invention provides a ball cock for a railway vehicle which comprises a main body possessing a primary-side opening and a secondary-side opening which face one another and an air exhaust aperture which is formed between these openings. Such ball cock further includes a ball-shaped valve body which is rotatably provided inside such main body and in which there is formed a communication aperture which connects the primary side opening and the secondary-side opening and a side aperture which, consequent to its rotation, connects the air exhaust aperture and either the primary-side or secondary-side opening. There is formed in the main body's air exhaust aperture a pipe connection to which is be connected a restrictor. In another embodiment a extension pipe is connected to such pipe connection in such air exhaust aperture.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: October 9, 2001
    Assignee: Westinghouse Air Brake Company
    Inventors: Yoshio Asano, Osamu Akamatsu, Mitsumasa Morita, Yoshio Suetaka
  • Patent number: 6298749
    Abstract: A jointed hand brake release handle for a railway car hand brake mechanism, having a lever arm with an inner end attachable to a rotatable hand brake release post of a hand brake mechanism, and an extension arm pivotally attached to the outer end of the lever arm and adapted for pivotal movement such that a contact face on the inner end of the lever arm can be brought into contact with a contact face on the outer end of the lever arm, and such that continued pivotal movement of the extension arm will cause rotational movement of the lever arm and rotation of the hand brake release post.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: October 9, 2001
    Assignee: Westinghouse Air Brake Company
    Inventors: W. Kurt Stroer, David C. Brabb, Howard Sommerfeld