Two-rail Clamps Patents (Class 238/21)
  • Patent number: 9511821
    Abstract: The present invention relates to a cycle with a single wheel, and a cycle with a single wheel according to the present invention includes: a wheel with a central hub; a roller contacting the inside surface of the hub with a plurality of roller shafts connected to both ends of the hub, the roller shafts being separated from each other with a given interval; a hub cover with the outside connected to the end part of a cycle body; a gear shaft provided with a first multi-stage gear and connected to the hub cover so as to be positioned between the plurality of roller shafts; and a pedal shaft inserted through a hole formed in a given position of the hub cover so as to penetrate the hub, wherein the pedal shaft is mounted with a gear engaging with one end of the first multi-stage gear, and a second multi-stage gear is inserted with one end thereof spaced from the gear to engage with the other end of the first multi-stage gear and the other end thereof engaging with a gear part formed in the inner peripheral surface
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: December 6, 2016
    Inventor: Jong Hwa Go
  • Patent number: 8302877
    Abstract: The first object of the present invention is to provide a derailment prevention guard which can be easily shunted outside the range of the ballast tamping work, the rail grinding work and the rail maintenance work, and has no problem on safety.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: November 6, 2012
    Assignees: Central Japan Railway Company, Yamato Trackwork System Co., Ltd.
    Inventors: Masaki Seki, Takashi Kachi, Tomomi Funada, Takaaki Irie, Katsunari Konishi, Tetsuya Hanazaki
  • Patent number: 7891577
    Abstract: A derailment prevention guard includes a guard member (3) installed within a gauge and a support member (6) fixed to a sleeper (4) or a concrete slab track. The guard member (3) engages a hold member (8) moveable around an axis (7) supported by the support member (6) as turning center between a main rail (1) and the inside of the gauge on the sleeper. The support member (6) engages the hold member (8) by bolt (12) through turning the hold member (8) toward the main rail (1) around the central axis (7) as turning center on the sleeper (4), and the guard member (3) can be shunted inward by turning the hold member (8) toward the inside of the gauge around the central axis (7) as turning center on the sleeper (4) after loosening the bolt (12).
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: February 22, 2011
    Assignees: Central Japan Railway Company, Yamato Trackwork System Co., Ltd.
    Inventors: Masaki Seki, Takashi Kachi, Tomomi Funada, Takaaki Irie, Katsunari Konishi, Tetsuya Hanazaki
  • Patent number: 4844337
    Abstract: A main railway rail and a guard rail are maintained in spaced apart relationship on a tie plate having a shoulder located between the rails by an elastically deformed clip. The clip has two end lengths extending from opposite ends of a central length. One length of the clip rides on the main rail flange and the other length of the clip rides on the guard rail flange while the central length engages the intermediate shoulder.
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: July 4, 1989
    Assignee: Chemetron-Railway Products, Inc.
    Inventor: Graham M. Fee
  • Patent number: 4381839
    Abstract: A large gantry for straddling and handling a heavy load comprises a pair of vertical support assemblies which support a horizontal load-bearing gantry beam. Each support assembly comprises three vertically disposed independently extendable/retractable hydraulic rams. A tiltable self-leveling sole plate is located between the upper ends of the three rams in each support assembly and the underside of an end of the gantry beam. A control system which includes selectively operable panel-mounted joy-stick actuated control switches and control valves effects operation of the rams in unison to raise and lower the gantry beam and also effects independent individual operation of any ram to level the beam if necessary. The arrangement increases the stability, the load-handling capacity and the operational safety of the gantry.
    Type: Grant
    Filed: March 2, 1981
    Date of Patent: May 3, 1983
    Assignee: Riggers Manufacturing Co.
    Inventors: Edgar D. Engler, Gary V. Lorenz
  • Patent number: 3945566
    Abstract: A railroad track fastener assembly consisting of a spring plate and a resilient seat for a railroad rail comprising a pad of resilient material positioned between the rail base and the base of a spring plate. The spring plate may be bolted to any type of cross tie or foundation of concrete, steel, or wood. The pad of resilient material is formed with a plurality of spaced vertical holes and is either bonded to the base of the spring plate and is freely positioned within the spring plate. The pad is retained within the spring plate by spring shoulder clips that are secured to the spring plate shoulders resiliently checking the upward motion of the rail under a heavy load. Guard rails and braces are provided for maintaining the wheels of rolling stock on the rails while rounding curves.
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: March 23, 1976
    Assignee: New York City Transit Authority
    Inventor: Charles J. Bush