Pipe joints or couplings – Elbow
Patent
1991-07-31
1994-08-16
Reese, Randolph A.
Pipe joints or couplings
Elbow
285 15, 285381, F16L 5517
Patent
active
053380703
ABSTRACT:
The present invention discloses a diameter-reducing member joint device, where connecting a first member to be connected as the boss of a flange joint or composed of relatively large-diameter pipes to a second member to be connected and having an outer diameter smaller than that of the first member, characterized by interposing a diameter-reducing pipe joint, which has at one end a large-diameter connection portion connected to the first member and also at the other end a small-diameter connection portion connected to the second member, between the first and second members to be connected, and by using a ring-like or cylindrical heat-shrinkable member made of a heat-shrinkable type of shape memory alloy. Namely, the large-diameter connection portion of the diameter-reducing pipe joint and the first member are connected to each other by tightening up due to the shape recovery force when the heat-shrinkable member is thermally shrunken, and the small-diameter connection portion at the other end of the diameter-reducing pipe joint is connected to the second member in a similar manner, so that the first member having a large diameter is connected to the second member and having an outer diameter smaller than that of the first member in a simple and reliable manner.
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Horikawa Hiroshi
Matsubara Kazuo
Mogi Hisashi
Tsuzuki Yoshikazu
Burstyn Harold L.
Chun Heather
Furukawa Electric Co. Ltd.
Morrison Thomas R.
Reese Randolph A.
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