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Locking fastener assembly for threaded joint

  • US 4,812,094 A
  • Filed: 09/24/1987
  • Issued: 03/14/1989
  • Est. Priority Date: 09/24/1987
  • Status: Expired due to Term
First Claim
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1. A threaded joint of the type tightened or loosened with a tool and comprising in combination:

  • a relatively fixed structure including a threaded member extending along an axis and including first restraining means;

    a relatively movable locking fastener assembly engageable with said relatively fixed structure and including a rotatable fastener and a retainer;

    said fastener having a tool receiving portion, a flange, and a thread structure engageable with said threaded member for tightening or loosening of the joint in response to rotation of the fastener around the axis;

    said retainer including means for holding said retainer in assembly with said flange, and including second restraining means engageable with said first restraining means for preventing rotation of said retainer relative to said threaded member; and

    latch means connected between said fastener and said retainer for permitting relative rotation between said fastener and retainer in released position and preventing relative rotation between said first and retainer in a latched position;

    said latch means including latch release means disposed at said tool receiving portion of said fastener for releasing said latch means in response to engagement of said fastener by said tool.

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