Pipe joints or couplings – Temperature responsive joint element; e.g. – shrunk fit – Memory plastic element
Patent
1987-10-20
1989-06-06
Arola, Dave W.
Pipe joints or couplings
Temperature responsive joint element; e.g., shrunk fit
Memory plastic element
2853827, 285417, 285906, F16L 2500
Patent
active
048365866
ABSTRACT:
Described herein are composite devices comprising two members. The first member is a heat recoverable driving member and the second is a metallic member associated with the first in such a way that upon heat recovery of the driver, the second member is dimensionally altered to engage a substrate. In one embodiment, useful for example as a composite coupling for joining cylindrical substrates, the driver comprises a tubular heat recoverable compression sleeve having a generally uniform interior surface. In this embodiment, the second member comprises a tubular insert snugly, and concentrically disposed within the sleeve. Although both its interior and exterior surfaces may be uniform, preferably one or both surfaces has a weakened portion to facilitate its deformation or bears integral radial teeth or a combination thereof. Upon heat recovery of the compression sleeve, the insert is compressed about the substrate.
In another embodiment, the driver is positioned internally of the second member. Expansive heat recovery of the driver expands the second member to engage the substrate.
In other embodiments, one or more members of the device can be made from a gall-prone metal to facilitate engagement of the device to a substrate or to facilitate engagement between members of the device.
REFERENCES:
patent: 351263 (1986-10-01), Hemphill
patent: 1186812 (1916-06-01), McFerran
patent: 1186813 (1916-06-01), McFerran
patent: 1265706 (1918-05-01), Burdeen
patent: 1721197 (1929-07-01), Almen
patent: 1910269 (1933-05-01), Sunderlang
patent: 2080220 (1937-05-01), Butter et al.
patent: 2273398 (1942-02-01), Couty
patent: 2378525 (1945-06-01), Abegg
patent: 2458152 (1949-01-01), Eakins
patent: 2575213 (1951-11-01), Fruth
patent: 2575481 (1951-11-01), Anderson
patent: 2668468 (1954-02-01), Flegaus
patent: 2787481 (1957-04-01), Buschow
patent: 2797111 (1957-06-01), Beazley
patent: 2994933 (1961-08-01), Wolfe
patent: 3033600 (1962-05-01), Drysdale
patent: 3033727 (1982-05-01), Cram et al.
patent: 3113408 (1963-12-01), Kirkpatrick et al.
patent: 3139468 (1964-06-01), Wheat
patent: 3140108 (1964-07-01), Klein et al.
patent: 3143012 (1964-08-01), Deperthes
patent: 3149861 (1964-09-01), Larsson
patent: 3184535 (1965-05-01), Worthington
patent: 3235284 (1966-02-01), Jones
patent: 3235289 (1966-02-01), Jones
patent: 3245699 (1966-04-01), Peterson
patent: 3317655 (1987-05-01), Oatess et al.
patent: 3320355 (1967-05-01), Booker
patent: 3376060 (1968-04-01), Tomioka
patent: 3425719 (1969-02-01), Bardon
patent: 3513429 (1970-05-01), Helsop
patent: 3531146 (1970-08-01), Blad et al.
patent: 3558369 (1971-01-01), Wang et al.
patent: 3567523 (1971-03-01), Jackson et al.
patent: 3579805 (1971-05-01), Kast
patent: 3588150 (1971-06-01), Wald
patent: 3601783 (1971-08-01), Loose
patent: 3632141 (1972-01-01), Larsson
patent: 3675949 (1972-07-01), Dawson
patent: 3740839 (1973-06-01), Otte
patent: 3786552 (1974-01-01), Saito
patent: 3805557 (1974-04-01), Sinerco
patent: 3805567 (1974-04-01), Sinerco
patent: 3819149 (1974-06-01), Kinder
patent: 3832243 (1974-08-01), Donkerslout et al.
patent: 3848389 (1974-11-01), Gapp
patent: 3913444 (1975-10-01), Otte
patent: 4035007 (1977-07-01), Harrison
patent: 4328982 (1982-05-01), Christianson
"Gas Supply Line Rehabilitation-10 Years of Natural Gas Supply"-Dipl-Ing. R. Dickmann, Bieiefeld, Pub. 6/76.
"Experience with Liquid Nitrogen in Shrinking", Quirin Berndt, REFA Eng., Villigst/Schwerte, 1969.
ASTM Standards A106 and A450.
Arola Dave W.
Raychem Corporation
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