Pipe joints or couplings – Elbow
Patent
1990-10-18
1991-12-10
Arola, Dave W.
Pipe joints or couplings
Elbow
285187, 285287, 285416, 228251, 22826316, F16L 5500
Patent
active
050711741
ABSTRACT:
In a construction for joining a copper tube (20) to a steel body (10) which may be part of a device such as an accumulator used in an air conditioning system, the copper tube is passed into an opening (14) in a wall (12) of the steel body. The opening in the steel body is bounded by a neck projection (18) which extends outward therefrom. A copper collar (24) includes a first portion (26) which accepts neck projection (18) of the steel body. A second portion (28) of the copper collar (24) accepts the copper tube. A mass (34) of brazing material is positioned in the collar in a tapered transitional portion (30) between the first and second portions of the collar. When the body, tube and collar are assembled and placed in a brazing furnace, the brazing material melts and flows by capillary action between the first portion of the collar and the outside of the neck projection of the steel body. The brazing material also flows between the second portion of the collar and the tube. Upon cooling, the brazing material forms a strong, fluid-tight weld which joins the body and the tube.
REFERENCES:
patent: Re27709 (1973-07-01), Holmgren
patent: 2353466 (1944-07-01), Heintz et al.
patent: 2453331 (1948-11-01), Martin
patent: 3858911 (1975-01-01), Martin
Clark David C.
Griffin Gary E.
Arola Dave W.
Jocke Ralph E.
Parker-Hannifin Corporation
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