Caster thread guard and caster assembly

  • US 7,143,472 B2
  • Filed: 10/06/2004
  • Issued: 12/05/2006
  • Est. Priority Date: 10/10/2003
  • Status: Active Grant
First Claim
Patent Images

1. A caster assembly comprising:

  • a yoke having a first yoke leg and a second yoke leg with a yoke leg axle opening through the first and second yoke legs;

    a wheel having a hub and a hub axle opening through the hub, wherein the wheel is attached to the first and second yoke legs with an axle bolt;

    a thread guard located between the hub and the first yoke leg, the thread guard having a disk-shaped body with a thread guard axle opening through the body for receiving the axle bolt, and wherein the thread guard further includes an outer surface facing toward the first yoke leg and an inner surface facing toward the hub, wherein the outer surface includes a raised ridge extending away from the body, wherein the ridge substantially surrounds and conforms to the shape of the first yoke leg and extends beyond the furthest extent of the axle bolt.

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