Two-shot molded seal integrity indicator, underwater camera, and method
First Claim
Patent Images
1. A pressure indicator comprising:
- an indicator support surrounding an opening;
an elastomer facing united with said indicator support, said facing having a free region overlaying said opening, said free region having an inner surface and an outer surface, said free region being deflectable by a relative pressure differential between said inner and outer surfaces;
wherein said indicator support is engineering plastic and said indicator support and said facing are codiffused.
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Abstract
A pressure indicator of an underwater camera housing has an indicator support surrounding an opening. An elastomer facing is united with the indicator support. The facing has a free region overlaying the opening. The free region has an inner surface and an outer surface. The free region is deflectable by a relative pressure differential between the inner and outer surfaces. Excessive inward excursion of the free region can be prevented by a backup.
123 Citations
13 Claims
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1. A pressure indicator comprising:
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an indicator support surrounding an opening;
an elastomer facing united with said indicator support, said facing having a free region overlaying said opening, said free region having an inner surface and an outer surface, said free region being deflectable by a relative pressure differential between said inner and outer surfaces;
wherein said indicator support is engineering plastic and said indicator support and said facing are codiffused. - View Dependent Claims (2, 3, 4)
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5. An underwater housing having an internal cavity sealed water-tightly from an external environment, said housing comprising:
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a non-elastomer shell having a border portion surrounding a passage;
an elastomer facing having a free region overlaying said passage, said free region having an inner surface in communication with said cavity and an outer surface in communication with the external environment, said free region being deflectable by a relative pressure differential between said inner and outer surfaces;
wherein said facing is external to said shell.
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6. An underwater housing having an internal cavity sealed water-tightly from an external environment, said housing comprising:
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a non-elastomer shell having a border portion surrounding a passage;
an elastomer facing having a free region overlaying said passage, said free region having an inner surface in communication with said cavity and an outer surface in communication with the external environment, said free region being deflectable by a relative pressure differential between said inner and outer surfaces;
wherein said shell is engineering plastic and said shell and said facing are codiffused.
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7. An underwater housing having an internal cavity sealed water-tightly from an external environment, said housing comprising:
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a non-elastomer shell having a border portion surrounding a passage;
an elastomer facing having a free region overlaying said passage, said free region having an inner surface in communication with said cavity and an outer surface in communication with the external environment, said free region being deflectable by a relative pressure differential between said inner and outer surfaces;
wherein said housing has separable first and second housing parts, said first housing part including said border portion, said second housing part including a backup portion, said backup portion being disposed interior to said passage and in overlapping relation to said passage. - View Dependent Claims (8, 9, 10)
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11. An underwater camera comprising
a housing defining an internal cavity, said housing sealing said internal cavity water-tightly from an external environment, said housing including: -
a non-elastomer shell having a border portion surrounding a passage;
an elastomer facing having a free region overlaying said passage, said free region having an inner surface in communication with said cavity and an outer surface in communication with the external environment, said free region being deflectable by a relative pressure differential between said inner and outer surfaces; and
a camera frame assembly disposed in said internal cavity;
wherein said housing has separable first and second housing parts, said first housing part including said border portion, said second housing part including a backup portion, said backup portion being disposed interior to said passage and in overlapping relation to said passage. - View Dependent Claims (12)
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13. An underwater camera comprising
a housing defining an internal cavity, said housing sealing said internal cavity water-tightly from an external environment, said housing including: -
a non-elastomer shell having a border portion surrounding a passage;
an elastomer facing having a free region overlaying said passage, said free region having an inner surface in communication with said cavity and an outer surface in communication with the external environment, said free region being deflectable by a relative pressure differential between said inner and outer surfaces; and
a camera frame assembly disposed in said internal cavity;
wherein said facing is external to said shell.
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Specification