Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1975-09-02
1976-08-03
Moon, Charlie T.
Metal working
Method of mechanical manufacture
Assembling or joining
29237, 29520, B23P 1904
Patent
active
039721124
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: 2333120 (1943-01-01), Parker
patent: 2381748 (1945-08-01), Howe
patent: 2737403 (1956-03-01), Ellis
patent: 2739373 (1956-03-01), Kane
patent: 3201859 (1965-08-01), Stanley
patent: 3579794 (1971-05-01), Powell
patent: 3691604 (1972-09-01), Spontelli
patent: 3722064 (1973-03-01), Spontelli
patent: 3728771 (1973-04-01), Spontelli
patent: 3773169 (1973-11-01), Zahuranec et al.
Koski Jerry V.
O'Sickey Lawrence B.
Moon Charlie T.
Parker-Hannifin Corporation
Wolfram John N.
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