Electricity: conductors and insulators – Boxes and housings – Hermetic sealed envelope type
Patent
1985-09-27
1988-09-27
Grimley, A. T.
Electricity: conductors and insulators
Boxes and housings
Hermetic sealed envelope type
138 91, 174 52S, 174 93, 220307, H05K 506
Patent
active
047743832
ABSTRACT:
Sealing assemblies (16, 18, 20) are disclosed for isolating electronic circuitry (14) within a magnetometer (12) from the effects of water intrusion when the magnetometer is used under water. The electronic circuitry (14) is positioned within an inner cylindrical member (24) and the ends of the inner cylindrical member are sealed by RTV rubber plugs (50, 52). Passages (54) through the plugs permit signal cables to extend from the electronic circuitry to the surface. The compression of the resilient plugs seals against the cable and the inner wall of the inner cylindrical member. Interior O-rings (46, 48) seal between the exterior of the inner cylindrical member and the inner wall of an outer cylindrical member (62) to seal the annular space therebetween. Couplings (66, 68) are secured at each end of the outer cylindrical member (62) and accept nipples (70, 72). Caps (78, 82) are slid over the nipples. Exterior O-rings (88, 90) are positioned on the outer surface of the nipples between facing chamfered seal surfaces on the coupling and cap and are squeezed into sealing engagement between the coupling, cap and nipple as exterior pressure is increased.
REFERENCES:
patent: 2647774 (1953-08-01), Newberry
patent: 2958723 (1960-11-01), Logan et al.
patent: 3104681 (1963-09-01), Gray, Jr.
patent: 3120967 (1964-02-01), Kazienko
patent: 4172212 (1979-10-01), Heinzer
patent: 4607469 (1986-08-01), Harrison
Grimley A. T.
Tone David A.
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