Pipe joints or couplings – Packed – Wedge
Patent
1974-11-25
1976-07-20
Callaghan, Thomas F.
Pipe joints or couplings
Packed
Wedge
29237, 29516, 2853827, F16L 1908
Patent
active
039703363
ABSTRACT:
A tube coupling joint comprising a tube having an enlarged end, a body having a bore to receive the tube end and having a cam surface leading to the bore, a sleeve having an inner end with a transverse shoulder contracted to a diameter less than the tube diameter with the sleeve shoulder embedded within the tube adjacent the expanded portion of the tube, and a nut holding the sleeve into engagement with the cam surface whereby the cam surface maintains the sleeve shoulder in its embedded position.
The method of forming the joint includes the use of an apparatus wherein the sleeve is held in a fixed position relative to the tube and spaced from the end of the tube while the tube end is being expanded, moving a punch into the tube to expand the end thereof, and then axially moving the tube relative to the sleeve while a die member having a camming surface thereon radially contracts the end of the sleeve to a diameter less than the initial diameter of the tube whereby a shoulder on the sleeve cuts its way into the wall of the tube to become embedded therein closely adjacent the expanded end of the tube.
REFERENCES:
patent: 2000481 (1935-05-01), Harrison
patent: 2123999 (1938-07-01), Lauer
patent: 2269629 (1942-01-01), Kreidel
patent: 2300584 (1942-11-01), Martin
patent: 2332682 (1943-10-01), Yelinek
patent: 2364447 (1944-12-01), Hynes
patent: 2443187 (1948-06-01), Hobbs
patent: 2951715 (1960-09-01), Bauer
patent: 3201859 (1965-08-01), Stanley
patent: 3218094 (1965-11-01), Bauer
patent: 3399908 (1968-09-01), Kurtz
patent: 3584900 (1971-06-01), Lennon
patent: 3746376 (1973-07-01), Gold
Koski Jerry V.
O'Sickey Lawrence B.
Callaghan Thomas F.
Parker-Hannifin Corporation
Wolfram John N.
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