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Method and apparatus for locking a tubular quick coupling

  • US 6,764,103 B1
  • Filed: 03/25/2003
  • Issued: 07/20/2004
  • Est. Priority Date: 03/25/2003
  • Status: Expired due to Fees
First Claim
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1. A locking quick coupling for heavy tubular connections comprising:

  • a) an elongated tubular insertion member having external curved tapered dogs and a sealing means at a leading end;

    b) an elongated tubular receiving member for mating with said insertion member having external threads and internal notches and locking grooves therein adjacent one end for receiving said dogs;

    c) a locking washer having wedge-shaped tangs perpendicular to said washer slidable upon said insertion member; and

    d) a locking nut having internal threads cooperative with said external threads located upon said receiving member slidable upon said insertion member.

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