Patent ID: 8540470

Claim:
A nut fastener, comprising: a retaining ring comprising a first rotational retaining member engageable with a shaft thereby preventing relative rotation between said retaining ring and said shaft, a pressure surface adapted to apply longitudinal force to an apparatus a first longitudinal retaining member, a first torque bearing surface, a first spring abutment surface, and a second rotational retaining member; a collar comprising a third rotational retaining member engaged with said second rotational retaining member thereby preventing relative rotation between said collar and said retaining ring, said collar comprising a bent portion extending longitudinally toward said retaining ring, an inner surface of said bent portion encompassing an outer circumference of said retaining ring, wherein said third rotational retaining member is disposed along said bent portion and said second rotational retaining member of said retaining ring is disposed along an outer surface thereof, and said collar comprising a second spring abutment surface, a fourth rotational retaining member, and an engagement surface; a spring disposed between said first spring abutment surface and said second spring abutment surface, said spring thereby biasing said collar away from said retaining ring and said collar being longitudinally moveable toward said retaining ring by compressing said spring, and; a nut comprising a second longitudinal retaining member engaged with said first longitudinal retaining member thereby preventing said nut and said retaining ring from separating from each other, a second torque bearing surface engaged with said first torque bearing surface thereby translating torque from said nut to said retaining ring, a fifth rotational retaining member engageable with said fourth rotational retaining member thereby preventing relative rotation between said nut and said collar when said collar is biased away from said retaining ring by said spring, inner threads engageable with external threads on said shaft, and a plurality of wrench bearing surfaces engageable with a tool to rotate said nut; wherein a force applied to said engagement surface compresses said spring and moves said collar toward said retaining ring, said fourth rotational retaining member and said fifth rotational retaining member thereby disengaging from each other to allow relative rotation between said nut and said collar.