Pipe joints or couplings – Essential catch – Coil spring
Patent
1994-10-24
1996-05-28
Nicholson, Eric K.
Pipe joints or couplings
Essential catch
Coil spring
285330, 285915, 285297, 285423, F16L 1300
Patent
active
055204228
ABSTRACT:
A pipe joint for fiber reinforced composite pipe has internal and external matching tapers with a low taper angle. A half round helical groove is formed in each of the internal and external tapers for receiving several turns of a ductile key. Deformation of the key in shear redistributes longitudinal loads along the length of the pipe joint. The outer member of the pipe joint has a high stiffness so that internal pressure in the pipe presses the tapered surfaces together so that the resulting friction enhances the longitudinal load carrying capability of the joint. High external stiffness may be provided by winding the external moiety of the joint with high modulus of elasticity fiber. The pipe joint is sealed by introducing a liquid ductile thermosetting sealant between O-rings at the inner end of the joint. The seal can be nondestructively tested and deployed under water before the sealant cures. The pipe joint is usable on high strength lightweight fiber reinforced composite pipe having helically wound steel strips embedded in the fiber reinforced resin. The pipe joint on such pipe is on an enlarged portion of glass fiber reinforced composite built up on an end of the pipe. The steel strips are terminated at differing distances from the end of the pipe joint and the ends of all of the steel strips are completely embedded in the fiber reinforced resin.
REFERENCES:
patent: 10877 (1887-10-01), Wilbur
patent: 170473 (1875-11-01), Flagler et al.
patent: 506484 (1893-10-01), Ewing
patent: 2341670 (1944-02-01), Stinson
patent: 2418418 (1947-04-01), Martin et al.
patent: 3062568 (1962-11-01), Andresen et al.
patent: 3353563 (1967-01-01), Hutton
patent: 3396994 (1968-08-01), Ito et al.
patent: 3427047 (1969-02-01), Mayo
patent: 3606401 (1971-09-01), Schwarz
patent: 4153656 (1979-05-01), Bunyan
patent: 4174124 (1979-11-01), Dockree
patent: 4351364 (1982-09-01), Cocks
patent: 4491351 (1985-01-01), Galle, Jr. et al.
patent: 4647080 (1987-03-01), Sandt et al.
patent: 4657049 (1987-04-01), Fourty et al.
patent: 4893658 (1990-01-01), Kimura et al.
patent: 4943094 (1990-07-01), Simmons
patent: 5106130 (1992-04-01), Ellsworth
patent: 5213379 (1993-05-01), Taniguchi et al.
patent: 5233737 (1993-08-01), Policelli
patent: 5350202 (1994-09-01), Fritz et al.
patent: 5398975 (1995-03-01), Simmons
Friedrich Ralph
Kuo Ming
Smyth Kevin
Ameron Inc.
Nicholson Eric K.
LandOfFree
High-pressure fiber reinforced composite pipe joint does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High-pressure fiber reinforced composite pipe joint, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-pressure fiber reinforced composite pipe joint will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-781693