Friction Patents (Class 168/41)
  • Patent number: 8474544
    Abstract: A device and method for enhancing traction effectiveness of horseshoes is provided. The device includes a non-threaded stud and a non-threaded insert for receiving the stud. The insert has expandable wall sections with inwardly projecting protrusions, the wall sections at least partially sheathing the stud. The stud and insert create an assembly formed-fittingly insertable in an aperture formed on a bottom surface of the horseshoe. The stud projects outward from the bottom surface, is secure against dislodgement when the horseshoe is worn, and yet removable without threadably twisting the stud.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: July 2, 2013
    Inventors: Michael M. Mastice, Lawrence P. Getto
  • Patent number: 4139061
    Abstract: On both heels of a racing plate a boss is formed having a top surface lying substantially flush with the top surface of the shoe, and an upwardly facing opening including a shallow recess and a mortise extending completely through the shoe is formed in each boss for receiving an insert. The insert formed of abrasion resistant material has a capital which lies in the recess, and a tenon which slides snuggly into the mortise and is held in place by a resilient O-ring. The insert capital supports the side walls of the recess and the recess walls exclude dirt from wedging between the capital and recess floor and lifting out the insert. A calk is made by forming a cleat on the insert capital; without a cleat, the insert is a wear plate whose top surface is flush with the top surface of the boss, providing a zone of increased wear resistance to decrease the wear of the heels.
    Type: Grant
    Filed: September 8, 1976
    Date of Patent: February 13, 1979
    Assignee: Kwik-Kalk Corporation
    Inventor: W. Martin Vogel, Jr.