Pipe joints or couplings – Packed – Socket
Patent
1996-10-22
1999-02-16
Nicholson, Eric K.
Pipe joints or couplings
Packed
Socket
285277, 285314, 285360, 285401, F16L 2108
Patent
active
058712410
ABSTRACT:
A coupling for interconnecting two fluid flow lines includes a first coupling member (1) having a male end (4) and a second coupling member (2) having a female end (17) within which a rotatable collar (3) is held captive. The male end (4) includes four equally circumferentially spaced lobes (16) and the collar (3) has a cylindrical portion (3) that is shaped at its inner end to provide a square cross-section (35) to allow passage of the lobes (16) therethrough. The end rim (33) of collar (3) is recessed (37, 38) whereby upon insertion of male end (4) through collar (3) and rotation of the collar, the lobes (16) can seat within the recesses (37, 38), thereby releasably interconnecting the first and second coupling members (1, 2). Each recess in the end (33) of collar (3) has a first portion (37) and a second, deeper, portion (38) such that when the first member (1) is axially moved in a separating direction, the lobes (16) can seat within the deeper recess portions (38) to prevent relative rotation between collar (3) and male end (4) thereby locking the first member (1) to the second member (2). This prevents accidental release of the coupling, particularly in high pressure applications. The interengagement of lobes (16) and recesses (37-38) provides four pressure bearing contact surfaces allowing design of a coupling to withstand pressure of about 3445 N/cm.sup.2 (5000 psi).
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patent: 4632433 (1986-12-01), Kimura
Alfagomma Australia PTY Ltd.
Nicholson Eric K.
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