Pipe joints or couplings – Temperature responsive joint element; e.g. – shrunk fit – Memory plastic element
Patent
1980-02-06
1984-09-04
Arola, Dave W.
Pipe joints or couplings
Temperature responsive joint element; e.g., shrunk fit
Memory plastic element
2853827, 285417, F16L 2500
Patent
active
044693575
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: 1186812 (1916-06-01), McFerran
patent: 1186813 (1916-06-01), McFerran
patent: 1265706 (1918-05-01), Bardeen
patent: 1721197 (1929-07-01), Almen
patent: 1910269 (1933-05-01), Sunderland
patent: 2378525 (1945-06-01), Abegg
patent: 2575481 (1951-11-01), Anderson
patent: 2797111 (1957-06-01), Beazley
patent: 3143012 (1964-08-01), Deperthes
patent: 3235289 (1966-02-01), Jones
patent: 3245699 (1966-04-01), Peterson
patent: 3320355 (1967-05-01), Booker
patent: 3425719 (1969-02-01), Burton
patent: 3513429 (1970-05-01), Helsop
patent: 3579805 (1971-05-01), Kast
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: 3805567 (1974-04-01), Sinerco
patent: 3819149 (1974-06-01), Kinder
patent: 3913444 (1975-10-01), Otte
patent: 4035007 (1977-07-01), Harrison
ASTM Standards A106 and A450.
Martin Marietta Report TOS-48844-006.
Arola Dave W.
Raychem Corporation
LandOfFree
Composite coupling does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composite coupling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite coupling will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1888711