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US 4,776,616 AGranted
Coupling
AssigneeUsui Kokusai Sangyo Kabushiki Kaisha
InventorsKazumasa Umehara, Katsushi Washizu, Kazunori Takigawa
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AssigneeUsui Kokusai Sangyo Kabushiki Kaisha
InventorsKazumasa Umehara, Katsushi Washizu, Kazunori Takigawa
Estimating the term…
An improved coupling for connecting a pipe joint and a metal pipe which has a relatively small diameter not exceeding about 30 mm and a wall thickness not exceeding about 2 mm is offered. The coupling is often used to form a pipeline for supplying oil, air, etc. to an automobile, machine or apparatus, or collecting exhaust gas, etc. The coupling is to connect a metal pipe to a pipe joint having a bore defining a fluid passageway, wherein the joint includes a cylindrical wall portion extending from an annular shoulder, and the pipe extends into the cylindrical wall portion and has an end provided with a radially outwardly projecting flange. An elastic seal ring is provided adjacent to the shoulder and the flange. A cylindrical member is disposed between the cylindrical wall portion and the pipe for holding the flange and the seal ring against the shoulder, the cylindrical wall portion having a radially inwardly bent end holding the cylindrical member.
ln a coupling for connecting a metal pipe to a pipe joint having a bore defining a fluid passageway, the improvement which comprises:
In a coupling for connecting a metal pipe to a pipe joint having a bore defining a fluid passageway, the improvement which comprises:
Dependencies are inferred from the claim text.