Patents Assigned to National Foundry Sand Company
  • Patent number: 3994457
    Abstract: A railway pivotal crossing gate is made with a modular construction to facilitate repair of the gate. The gate modules are preferably of alternating colors along the length of the gate and have exposed parallelogram configurations so the gate has slash markings. Each module includes an elongated body that is preferably injection molded from a translucent plastic with a hollow construction. Male and female ends of each module interfit with ends of adjacent modules to permit self-threading fasteners to interconnect the modules in a detachable manner. Lights are mounted within certain modules so these modules glow and thereby light the gate. Interconnected wire harnesses of the modules are utilized to energize the lights. The unlighted modules preferably mount light reflectors. The gate modules may have hollow rectangular or trapezoidal cross-sections, the latter being useful in conserving the material from which the modules are molded.
    Type: Grant
    Filed: July 28, 1975
    Date of Patent: November 30, 1976
    Assignee: National Foundry Sand Company
    Inventor: William A. Teasel