Pipe joints or couplings – With lubrication
Patent
1991-01-09
1992-07-07
Arola, Dave W.
Pipe joints or couplings
With lubrication
285 49, 285382, 285291, 285915, F16L 914
Patent
active
051276801
ABSTRACT:
A pipe joint structure is disclosed. An inscribing joint pipe 2 is fixed to an inner peripheral surface at an end portion of a first pipe 1a, while being projected slightly outwardly from the axial end of the pipe 1a. A stopper ring 15 is fixed onto the outer peripheral surface of the pipe 1a at a location slightly spaced from the axial end thereof. An annular engaging notch 11 is formed in the outer peripheral surface near the stopper ring or an annular engaging ring 11' is inserted around the end portion of the pipe 1a and fixed near the stopper ring. A circumscribing reinforcing pipe 3a, 3b are fixed to an outer peripheral surface at an end portion of the other pipe 1b to be joined to the pipe 1a, while being projected slightly outwardly from the axial end of the pipe 1b. The circumscribing reinforcing pipe is provided with an engaging ring 10 at its tip end portion to engage the annular engaging ring 11 or a remote end of the annular fitting ring from the other pipe 1b in the state that the pipes 1a and 1b are joined together. Plural projections 4a, 4b are formed on the inner peripheral surface of the other pipe 1b near the axial end of the pipe 1a. A cover tape 9 with a pressure-sensitive adhesive 8 is provided around the outer periphery of the pipe 1a at location from the stopper ring 15 toward the end thereof. A pressure-sensitive adhesive layer 5 and a reinforcing cloth 6 are attached to the inner peripheral surface of the pipe 1b inclusive of the circumscribing reinforcing pipe 3a, 3b from the engaging ring 10 at the circumscribing reinforcing pipe 3a, 3b. The reinforcing cloth 6 is impregnated with a lubricant having plasticity to the pressure-sensitive adhesive. When the pipe is joined, the adhesive layer 5 and the reinforcing layer 6 are interposed between joining surfaces of the pipe 1a, 1b joined through the circumscribing reinforcing pipe 3a, 3b and the inscribing joining pipe 2.
REFERENCES:
patent: 3228425 (1966-01-01), Pacella
patent: 3830530 (1974-08-01), Glover
patent: 4116478 (1978-09-01), Yamaji et al.
patent: 4673198 (1987-06-01), Pritchatt
patent: 4732412 (1988-03-01), Van der Linden
Application of FRPM and FRP Pipes to Reforming of Spillways Straub Coupling.
Locking Line Coupler Kinds and Uses of Rapid Fluid Joints.
LandOfFree
Pipe joint structure does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pipe joint structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pipe joint structure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1825519