Patents Assigned to MTR, Inc.
  • Publication number: 20140290004
    Abstract: A multiple direction railroad gate release mechanism which is attached between the mount arms of a railroad gate actuator and a crossing arm to prevent breakage of the crossing arm due to impingement in either a frontal or rearward direction by a vehicle or other outside force. A primary pivot arm assembly allows a released movement of the crossing arm in reaction to frontal impingement and returns the crossing arm to the original and detent position subsequent to an impingement in order to maintain grade crossing protection. Spring assemblies, a shock absorber and a spring centering assembly act to return the primary pivot arm assembly and attached crossing arm to a normal detent position. A secondary pivot arm assembly is secured to the primary pivot arm assembly whereby the secondary pivot arm assembly can act independently of the primary pivot arm assembly to allow released movement and return of the crossing arm in reaction to rear impingement.
    Type: Application
    Filed: February 3, 2014
    Publication date: October 2, 2014
    Applicant: MTR, INC.
    Inventor: Edwin J. Luetzow
  • Patent number: 8640996
    Abstract: An example includes an apparatus for releasing a railroad gate in at least two directions. The example includes a primary pivot member and a secondary pivot member pivotally connected to the primary pivot member, with one end of the railroad crossing connectable to the secondary pivot member. In the example the primary pivot member is rotable around a primary pivot of the apparatus, the primary pivot member rotable in a first direction against a first spring bias and in a second direction, opposite the first direction, against a second spring bias other than the first spring bias, and wherein the secondary pivot member is rotable around a secondary pivot of the apparatus, the secondary pivot member rotable in the first direction against a third spring bias other than the first spring bias and the second spring bias.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: February 4, 2014
    Assignee: MTR, Inc.
    Inventor: Edwin J. Luetzow
  • Patent number: 8485478
    Abstract: Some methods include rotating a crossing gate actuator around a vertical swing pivot of a crossing gate mount, along a vertical swing path and into a down position to block a path such that a crossing gate coupled to the crossing gate actuator blocks the path, with a spring biased crossing gate release mechanism maintaining the crossing gate in a center position blocking the path and decoupling a bar segment from the crossing gate to decouple a spring from biasing the crossing gate into the center position such that the crossing gate is free to swing around a horizontal swing pivot, perpendicular to the vertical pivot, and out of the path.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: July 16, 2013
    Assignee: MTR, Inc.
    Inventor: Edwin J. Luetzow
  • Publication number: 20130031839
    Abstract: An example includes an apparatus for releasing a railroad gate in at least two directions. The example includes a primary pivot member and a secondary pivot member pivotally connected to the primary pivot member, with one end of the railroad crossing connectable to the secondary pivot member. In the example the primary pivot member is rotable around a primary pivot of the apparatus, the primary pivot member rotable in a first direction against a first spring bias and in a second direction, opposite the first direction, against a second spring bias other than the first spring bias, and wherein the secondary pivot member is rotable around a secondary pivot of the apparatus, the secondary pivot member rotable in the first direction against a third spring bias other than the first spring bias and the second spring bias.
    Type: Application
    Filed: August 8, 2012
    Publication date: February 7, 2013
    Applicant: MTR, inc.
    Inventor: Edwin J. Luetzow
  • Patent number: 6755590
    Abstract: A box tube clamping system featuring a variable geometry clamp for secure joining of telescoping box tubes. A variable geometry clamp aligns between an inner and an outer box tube and includes a center wedge plate flanked by adjoining wedge plates which are advanced towards the center wedge plate to force the center wedge plate in an upward direction to force the outer box tube and the inner box tube into forced and secure intimate frictional engagement. Installation spacers are included for use with the variable geometry clamp to provide user friendly accommodation of an inner box tube past and along the variable geometry clamp mounted in one end of the outer box tube.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: June 29, 2004
    Assignee: MTR, Inc.
    Inventors: Edwin J. Luetzow, Richard L. Luetzow
  • Patent number: 6672008
    Abstract: A railroad gate release mechanism which attaches between the mount arms of a railroad gate actuator and a crossing arm to prevent breakage of the crossing arm due to impingement by a vehicle. The railroad gate release mechanism includes a pivotable arm assembly which allows released movement in two directions of the crossing arm in reaction to impingement and returns the crossing arm to the original and detented position subsequent to impingement to maintain grade crossing protection. An alternative embodiment includes a pair of swing plates and an elongated arm to which is attached a crossing arm, the elongated arm with the attached crossing arm is pivoted to the pair of swing plates in such manner that the elongated arm and attached crossing arm can be pivoted aside without moving the swing plates for crossing arm maintenance without impeding vehicular traffic flow across the grade crossing.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: January 6, 2004
    Assignee: MTR, Inc.
    Inventors: Edwin J. Luetzow, Richard L. Luetzow
  • Patent number: 6597558
    Abstract: A solenoid assembly including, in order, a circuit breaker side plate, a solenoid, a clamp bracket, and a bridge diode rectifier assembly, all which mechanically and electrically and engage into a precise configuration.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: July 22, 2003
    Assignee: MTR, Inc.
    Inventors: Edwin J. Luetzow, Richard L. Luetzow
  • Patent number: 6470626
    Abstract: A railroad gate release mechanism which attaches between the mount arms of a railroad gate actuator and a crossing arm to prevent breakage of the crossing arm due to impingement by a vehicle. The railroad gate release mechanism includes a pivotable arm assembly which allows movement of the crossing arm in two directions in response to the impingement and returns the crossing arm to the original and detented position subsequent to the impingement to maintain grade crossing protection. Spring assemblies, a shock absorber and a spring centering assembly act to return the pivotable arm assembly and attached crossing arm to the normal detented position.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: October 29, 2002
    Assignee: MTR, Inc.
    Inventors: Edwin J. Luetzow, Richard L. Luetzow
  • Patent number: 6357701
    Abstract: A warning light having a switching system where the behavior of a warning light can be altered by actuation of a switching mechanism by rotary actuation of a connector plug. A rotary pin base located adjacent to a connector plug receptor port is rotated by an engaging connector plug to rotationally position pins in the rotary pin base for the purpose of contacting stationary switch pins in a stationary pin base to provide electrical current of different natures and attributes to a warning lamp.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: March 19, 2002
    Assignee: MTR, Inc.
    Inventors: Edwin J. Luetzow, Richard L. Luetzow
  • Patent number: 6310529
    Abstract: The present invention is for a bi-stable battery switch incorporated preferably for internal use into a remotely switchable storage battery, or, in the alternative, for external use with a battery. A bifurcated contact assembly incorporating dual bus bars is pulse actuated by a solenoid and cam arrangement to engage or disengage across opposing contacts. When engaging the contacts and when associated with high inductive loads, the first bus bar to advance initiates contact and assumes the arcing load, while the second bus bar to advance assumes the current load. When breaking contact and when associated with high inductive loads, the first bus bar to retreat breaks the current load and the second bus bar to retreat breaks the arcing load. Thus, the loads are shared to increase the durability and length of service of the switch.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: October 30, 2001
    Assignee: MTR, Inc.
    Inventors: Edwin J. Luetzow, Richard L. Luetzow