Pressurized fluid supply hose and method of manufacturing the sa

Details Pressurized fluid supply hose and method of manufacturing the sa Pressurized fluid supply hose and method of manufacturing the sa

1996-04-02

1998-05-12

Lewis, Paul C.

Pipes and tubular conduits

With pressure compensators

138113, 138108, 29890144, F16L 5504

Patent

active

057493960

ABSTRACT:
A pressurized fluid supply hose which conducts pressurized fluid from a pump to a fluid operating device is disclosed. A nipple is caulked on an outer surface of a spiral tube formed by spirally winding two band members. By a caulking process, the nipple is formed at its inner surface with a flat portion and two taper portions. The taper portions are successive to the flat portion and sloped to gradually increase the inner diameter toward both ends of the nipple. The outer surface of the spiral tube is also deformed along the flat portion and the taper portions to be secured to the inner surface of the nipple. The spiral tube with the nipple is inserted into a flexible rubber hose and fixed to the rubber hose at a position corresponding to the nipple. Since the nipple is caulked so that the caulked amount of the spiral tube is gradually decreased toward the both ends of the nipple, a large clearance is prevented from being made between two outer and inner band members. It is therefore possible to effectively perform the operation to reduce the pulsation in the pressurized fluid.

REFERENCES:
patent: 4215726 (1980-08-01), Tagami
patent: 4794955 (1989-01-01), Ejima et al.
patent: 5094271 (1992-03-01), Fritz et al.
patent: 5201343 (1993-04-01), Zimmermann et al.

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