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LOCK NUT

  • US 3,762,455 A
  • Filed: 11/26/1971
  • Issued: 10/02/1973
  • Est. Priority Date: 11/26/1971
  • Status: Expired due to Term
First Claim
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1. A two piece lock nut assembly adapted to be secured to a threaded member with a keyway comprising:

  • a nut having an axial bore and an annular shoulder portion surrounding the bore at one end of the nut, the nut further having an axially traverse annular groove circumscribing the base of the nut adjacent the shoulder portion and being axially outward thereof toward the one end;

    a split ring including a radially inwardly extending key member on the inner edge thereof adapted to engage the keyway groove of the threaded element, a ring body portion and a flexible leg portion extending circumferentially from each end of the body portion, the ring body portion lying in a first plane and the flexible leg portions substantially lying in a second plane substantially parallel to the first plane, the pair of flexible leg portions operatively engaging the annular groove and the ring body portion operatively bearing against the shoulder portion;

    alignment means on the nut for relatively positioning the split ring;

    co-acting alignment means on the split ring for co-operating with the nut alignment means to prevent relative rotation between the nut and the split ring, and camming means for biasing the split ring against the nut including an outwardly projecting member on the outer edge of the split ring extending into the second plane of the flexible leg portions with at least a portion of the projecting member lying in the second plane for engaging the annular groove whereby the respective operative engagement of the projecting member, ring body member and flexible leg portions with the nut in two separate planes provides an axial force between the nut and split ring to hold them together.

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