Tube fitting

Details Tube fitting Tube fitting

1994-06-14

1996-09-03

Melius, Terry Lee

Pipe joints or couplings

Movable jaw

Wedge bushing

285341, 285243, F16L 2106

Patent

active

055517358

ABSTRACT:
A tube fitting includes a tubular body, an annular clamping member, a tubular inner pipe, a releasing member, and a sealing ring. The clamping member is disposed axially movably in an axial bore of the body, and includes a claw and an outer peripheral portion. The claw has an inclined surface projecting in a centripetal direction as the inclined surface extends away from an opening of the body, and engages with an outer peripheral surface of a tube fitted into the axial bore via the opening. The outer peripheral portion contacts with a regulatory surface of the body, and is pressed in a centripetal direction thereby, and accordingly presses the claw onto the outer peripheral surface of the tube. The inner pipe is disposed in the tube coaxially with an inner peripheral surface of the tube at an end of the tube. The releasing member includes a tubular base and a leading end. The base is disposed axially movably in the axial bore on an outer side with respect to the regulatory surface. The leading end extends from the base over the regulatory surface to an inner side of the axial bore, and goes between the inclined surface of the claw and the outer peripheral surface of the tube. The sealing ring seals between an inner peripheral surface of the axial bore and an outer peripheral surface of the tube fixed in the axial bore.

REFERENCES:
patent: 3909046 (1975-09-01), Legris
patent: 3999783 (1976-12-01), Legris
patent: 4021062 (1977-05-01), Mariaulle
patent: 4123090 (1978-10-01), Kotsakis et al.
patent: 4445714 (1984-05-01), Kisiel, III
patent: 4593943 (1986-06-01), Hama et al.
patent: 4951975 (1990-08-01), Bartholomew
patent: 5160179 (1992-11-01), Takagi
patent: 5174611 (1992-12-01), Byrd et al.
patent: 5348354 (1994-09-01), Bardoureaux

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