Track Brake Patents (Class 104/26.2)
  • Patent number: 9732876
    Abstract: A retarder control valve assembly and system for controlling speed of rail cars, utilizes cartridge valves carried in a manifold body including piping and pilot control apparatus, but no wearing surfaces, dynamic seals, or moving parts. The cartridge valves are replaceable without replumbing, and include all moving valve elements and dynamic seals. The valves each include a piston controlled poppet carried on a spool movable within a cartridge body to open and close the valve and supported to withstand high side loads. The pressure sensing and feedback to the retarder system controller is at the manifold, in a pressure spike attenuating circuit having a phase modulating capability to mimic retarder pressure remotely.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: August 15, 2017
    Assignee: EDCO USA
    Inventor: Edwin L. Johnson
  • Patent number: 8899385
    Abstract: Systems for retarding the speed of a railcar comprise: a brake; a hydraulic actuator moving the brake between a closed position in which the brake applies braking pressure on a wheel of the railcar and an open position in which the brake does not apply braking pressure on the wheel of the rail car; a hydraulic circuit comprising a first manifold and a second manifold; a pump configured to pump hydraulic fluid into at least one of the first manifold and the second manifold; and a logic element controlling pressure of the fluid in the first manifold such that when the wheel enters the brake and forces the brake towards the open position. The logic element reacts to maintain a selected pressure in the first manifold, thus causing a selected braking pressure to be applied by the brake on the wheel of the railcar.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: December 2, 2014
    Assignee: Precision Rail and Mfg., Inc.
    Inventors: Andrew J. Frailing, James E. Thompson
  • Publication number: 20140144345
    Abstract: In a method for operating a switching hump yard, at least one value for an entry speed into a first retarder is ascertained for the respective cuts in the form of rolling cars or car groups for the first retarder on the basis of a target release speed from the first retarder. At least one value for a release speed from a second retarder that lies uphill relative to the first retarder is determined for the second retarder on the basis of the ascertained at least one value for the entry speed into the first retarder. The second retarder is controlled taking into account the determined at least one value for the release speed. I also describe a control device for controlling a hump yard.
    Type: Application
    Filed: July 4, 2012
    Publication date: May 29, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Peter Kuehs
  • Publication number: 20140137762
    Abstract: A method for operating a switching hump yard, wherein in a first operating mode a lower master retarder is controlled in such a manner that cuts in the form of descending cars or groups of cars reach a classification track retarder of a classification track at a speed that is lower than a first threshold, a switch is made from the first operating mode into a second operating mode if a target for a cut is found in or in front of the classification track retarder of the classification track, and in the second operating mode the master retarder is controlled in such a manner that the cut reaches the determined target in or in front of the classification track retarder at a speed that is lower than a second threshold. We also describe a controller for controlling such a switching hump yard.
    Type: Application
    Filed: July 4, 2012
    Publication date: May 22, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Gerhard Dierkes, Mario Huster, Martin Jung
  • Patent number: 8604807
    Abstract: Operative monitoring of track brakes involves passing an electric current through a winding of a brake magnet, measuring the electric current and comparing the temporal progression of the measured current with a saved temporal progression of a reference current. Comparison is achieved by calculating the difference between the measured current and the reference current. The difference between measured current and reference current may be temporally integrated and compared with a threshold value. To determine a magnetic coupling between track brake and track, a calculation may be made as to whether the measured current has local minima and/or local maxima during the activation of the track brake, only the temporal progression of the measured current as the current increases being subjected to a comparison with the reference current. The current may be activated in pulses, with the comparison of the measured current and the reference current being restarted with each pulse.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: December 10, 2013
    Assignee: Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH
    Inventors: Henry Lehmann, Josef Datzreiter, Franz Daxecker, Peter Schlager
  • Patent number: 8505460
    Abstract: There is disclosed a method and a gas actuated retarder system for railway cars to control the rolling speed of a railway car along a first and second running rails of a track section. The retarder system includes a plurality of steel ties positioned substantially parallel to each other and perpendicular to the first and second running rails of a track section. A plurality of gas bladder mounts are positions between the running rails of the gas actuated retarder system. Coupled to each of the gas bladder mounts are air bladders with one air bladder on a side of the centerline of the gas actuated retarder system. Inflating and deflating the gas bladder selectively controls the amount of speed reduction of the railcar.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: August 13, 2013
    Assignee: Trackside Services, Inc.
    Inventor: Gregory F. Kickbush
  • Patent number: 8413770
    Abstract: Systems and methods for retarding the speed of a railcar are provided. A supply of pressurized hydraulic fluid is provided to a piston cylinder to actuate the cylinder and thereby move a brake into a closed position in which the brake will apply a predetermined braking pressure to a wheel of the railcar. An accumulator accumulates fluid from the circuit when the wheel forces the brake out of the closed position and supplies accumulated fluid back to the circuit as the brake moves back into the closed position to thereby maintain a substantially constant braking pressure on the wheel as it moves through the retarder.
    Type: Grant
    Filed: January 7, 2009
    Date of Patent: April 9, 2013
    Assignee: AAA Sales & Engineering, Inc.
    Inventors: Thomas J. Heyden, Gregory P. Reitz, Kurt J. Penney
  • Publication number: 20130068124
    Abstract: There is disclosed a method and a gas actuated retarder system for railway cars to control the rolling speed of a railway car along a first and second running rails of a track section. The retarder system includes a plurality of steel ties positioned substantially parallel to each other and perpendicular to the first and second running rails of a track section. A plurality of gas bladder mounts are positions between the running rails of the gas actuated retarder system. Coupled to each of the gas bladder mounts are air bladders with one air bladder on a side of the centerline of the gas actuated retarder system. Inflating and deflating the gas bladder selectively controls the amount of speed reduction of the railcar.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 21, 2013
    Inventor: Gregory F. Kickbush
  • Patent number: 7717043
    Abstract: Methods and apparatus for decelerating a train are provided. The method including: disposing a movable surface configured to be moved by the train as the train passes the movable surface; and converting a kinetic energy of the train into potential energy upon movement of the movable surface by the train to thereby decelerate the train. The apparatus including a railway upon which a train travels. The railway including: a movable surface extending in a direction of the train's travel; and potential energy storage device operatively connected to the movable surface for converting a kinetic energy of the train into potential energy upon movement of the movable surface thereby slowing the train.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: May 18, 2010
    Assignee: Omnitek Partners LLC
    Inventors: Jahangir S. Rastegar, Thomas Spinelli
  • Patent number: 7299751
    Abstract: The present invention provides a releasable skate retarder for railway cars. The retarder includes a plurality of spring packs including springs which bias shoe carrying beams toward running rails, trapping wheels of a railway car entering the retarder between the shoes and the running rails, and applying a frictional force to the railway car wheels for stopping the railway car and retaining the railway car in the retarder. The retarder is operable in a release mode in which an operating mechanism moves the shoe beams to a release position in which the spring force is released, allowing the railway car to move freely through the retarder. The retarder is operable in a service mode in which the operating mechanism moves the shoe beams outwardly, allowing the insertion of shims which cause the shoes to be repositioned closer to the running rails to compensate for shoe wear.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: November 27, 2007
    Assignee: Trackside Services, Inc.
    Inventor: Gregory F. Kickbush
  • Patent number: 7219793
    Abstract: A braking device for a pallet intended to run in a conveying track. The braking device includes a matrix and a braking element. The matrix includes the support service and exterior surface and a recess having various screws and openings. The braking element includes at least two protrusions which are disposed within the grooves of the matrix and project outwardly from the openings of the matrix at various stages of braking.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: May 22, 2007
    Assignee: Flexlink Components AB
    Inventors: Staffan Robertsson, Thomas Lumsden, Stavros Progoulakis
  • Patent number: 7140302
    Abstract: The present invention provides a releasable skate retarder for railway cars. The retarder includes a plurality of spring packs including springs which bias shoe carrying beams toward running rails, trapping wheels of a railway car entering the retarder between the shoes and the running rails, and applying a frictional force to the railway car wheels for stopping the railway car and retaining the railway car in the retarder. The retarder is operable in a release mode in which an operating mechanism moves the shoe beams to a release position in which the spring force is released, allowing the railway car to move freely through the retarder. The retarder is operable in a service mode in which the operating mechanism moves the shoe beams outwardly, allowing the insertion of shims which cause the shoes to be repositioned closer to the running rails to compensate for shoe wear.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: November 28, 2006
    Assignee: Trackside Services, Inc.
    Inventor: Gregory F. Kickbush
  • Patent number: 7140698
    Abstract: A hydraulic control and operating system is provided for a railroad car retarder to control the movement of railroad cars in railroad classification yard. The system utilizes a double-acting hydraulic cylinder to operate the retarder mechanism and includes a hydraulic control circuit that provides protection against pressure spikes and high pressure excursions, high and low temperature excursions, low oil levels and oil filter fouling. The above system not only shuts itself down to prevent damage, but provides a warning to maintenance staff that service should be performed long before a need for system shut-down is required. The system includes a central operating panel in the rail yard control center, remote control panel located at the position of the retarder and the system can be connected for operation from a completely remote location.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: November 28, 2006
    Assignee: AAA Sales & Engineering Inc.
    Inventors: James D. Braatz, Lowell B. Ziese, Richard Bohme
  • Patent number: 6829998
    Abstract: The present invention provides a releasable skate retarder for railway cars. The retarder includes a plurality of spring packs including springs which bias shoe carrying beams toward running rails, trapping wheels of a railway car entering the retarder between the shoes and the running rails, and applying a frictional force to the railway car wheels for stopping the railway car and retaining the railway car in the retarder. The retarder is operable in a release mode in which an operating mechanism moves the shoe beams to a release position in which the spring force is released, allowing the railway car to move freely through the retarder. The retarder is operable in a service mode in which the operating mechanism moves the shoe beams outwardly, allowing the insertion of shims which cause the shoes to be repositioned closer to the running rails to compensate for shoe wear.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: December 14, 2004
    Assignee: Trackside Services, Inc.
    Inventor: Gregory F. Kickbush
  • Patent number: 6520298
    Abstract: A railroad track brake in which a piston track brake is shifted out of an active state into an inactive state by a track-brake lowering device with a length of structural section extending along the piston track brake and having drag bars attached thereto while engaging the piston track brake. The active and inactive states are produced without contacting the housing of the piston track brake, and the braking process is free of acceleration forces. The drag bars contact the piston track brake only when it is in an inactive state to prevent acceleration forces.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: February 18, 2003
    Assignee: Thyssen Krupp Automotive AG
    Inventors: Gunter Meuters, Holger Quast
  • Patent number: 6199671
    Abstract: A piston-type rail retarder includes a shock absorber having a cylinder defining a cavity between a pair of end walls. A piston rod extends axially through one of the end walls, and a piston is mounted on the piston rod between the end walls so as to divide the cavity into first and second working chambers containing a damping fluid. A first array of passages extends through the piston and communicates between the first and second chambers, and a sprung valve assembly is provided for obturating the first array of passages in the event of the velocity of the piston rod relative to the cylinder exceeding a predetermined value. The first valve mechanism includes a valve plate and a spring for biasing the valve plate into an open position. An array of restricted orifices extend through the valve plate and communicate directly with the corresponding array of first passages when the valve plate is closed.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: March 13, 2001
    Assignee: New Joules Engineering (Sales) Proprietary) Limited
    Inventor: Cornelius Johannes Thyssen
  • Patent number: 6182575
    Abstract: The invention relates to adjustable stop-wagon retarders with locking function for wagons at high speed and disposal methods thereof, which are suitable for railway marshaling yards or rail lines where it is required to prevent wagons from running away, which are hydraulic equipment of no external energy source to automatically regulate wagon's speed and disposal methods of such equipment. The stop-wagon retarder is characterized in that a uni-directional return unit comprising a sealing valve plate and adjustable throttle valve, and a locking control valve composing of switch valve and positioning unit are mounted in the piston assembly, which make the returning speed and the locking speed for wagon at high speed adjustable, thus the aim of setting the retarder with different control levels and thresholds according to the wagon speed is realized.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: February 6, 2001
    Assignee: China TDJ System Research Centre
    Inventors: Yongting Liu, Qian Wang, Lining Wang, Mingzhu Wang, Hongbo Yu, Peiwen Chang, Libin Zhang