Partially split external barrier for composite structures

Details Partially split external barrier for composite structures Partially split external barrier for composite structures

1980-12-08

1982-11-23

Marcus, Stephen

Receptacles

Outlet or junction box type

Sectional receptacle

220414, 220435, F17C 106

Patent

active

043601162

ABSTRACT:
A liquid or gaseous impervious barrier is disclosed for use in composite structures, such as pressure vessels or the like, which include a juncture at which a first filament wound laminate meets a second member, such as a second laminate or a fixed boss or fitting. The juncture is capable of separating upon flexing of the first and second laminates or members. The barrier includes a flexible member disposed between the first and second laminates at the juncture thereof, with the barrier member being sealed, as by bonding, to the first and second laminates to prevent moisture penetration about the barrier member. The barrier member is split from the exterior thereof partially therethrough to accommodate any separation at the juncture due to flexing of the first and second laminates. A folded film sheet is disposed in the split in the barrier member to prevent the split portions thereof from adhering to each other. A resilient member, such as an O-ring is disposed in the fold of the film sheet and fits into an enlarged portion formed at the base of the split in the barrier member, for holding the film sheet within the barrier member.

REFERENCES:
patent: 2877801 (1959-03-01), Mercier
patent: 3132761 (1964-05-01), Sylvester
patent: 3148706 (1964-09-01), Mercier
patent: 3367815 (1968-02-01), Ragettli et al.
patent: 3843010 (1974-10-01), Morse et al.
patent: 3847716 (1974-11-01), Dorsch
patent: 3860478 (1975-01-01), Bartlow
patent: 3908851 (1975-09-01), Jacobs
patent: 3931834 (1976-01-01), Caillet

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