Protective acoustic cover assembly
First Claim
1. A protective acoustic cover assembly comprising:
- (i) a metal foil with perforations, and (ii) a treatment on one or more surfaces of said metal foil.
2 Assignments
0 Petitions
Accused Products
Abstract
A protective acoustic cover assembly including a metal foil with perforations, and a treatment on one or more surfaces of said metal foil. The treatment is a hydrophobic or oleophobic treatment, or both. The protective acoustic cover assembly has an average specific acoustic resistance of less than about 11 Rayls MKS from 250-300 Hz, an average specific acoustic reactance magnitude of less than about 1 Rayls MKS from 250-300 Hz, and an instantaneous water entry pressure value of greater than about 11 cm. The perforations of the metal foil preferably have an average maximum pore size of less than about 150 micrometers. The protective acoustic cover assembly further includes an adhesive mounting system, and the preferred metal foil is nickel.
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Citations
25 Claims
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1. A protective acoustic cover assembly comprising:
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(i) a metal foil with perforations, and (ii) a treatment on one or more surfaces of said metal foil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A protective acoustic cover assembly comprising:
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(i) a metal foil with perforations, and (ii) a treatment on one or more surfaces of said metal foil, wherein said protective acoustic cover assembly has an average specific acoustic resistance of less than about 11 Rayls MKS from 250-300 Hz, an average specific acoustic reactance magnitude of less than about 1 Rayls MKS from 250-300 Hz, an instantaneous water entry pressure value of greater than about 11 cm; and
wherein said perforations have an average maximum pore size of less than about 150 micrometers; and
wherein said metal foil is nickel.
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11. An apparatus comprising:
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(a) an acoustic transducer;
(b) a housing having at least one aperture, said housing at least partially enclosing said acoustic transducer;
(c) a protective acoustic cover assembly disposed proximate said aperture between said acoustic transducer and said housing, said protective acoustic cover assembly comprising;
(i) a metal foil with perforations, and (ii) a treatment on one or more surfaces of said metal foil. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An apparatus comprising:
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(a) an acoustic transducer;
(b) a housing having at least one aperture, said housing at least partially enclosing said acoustic transducer;
(c) a protective acoustic cover assembly disposed proximate said aperture between said acoustic transducer and said housing, said protective acoustic cover assembly comprising;
(i) a metal foil with perforations having an average maximum pore size of less than about 150 micrometers, and (ii) a hydrophobic or oleophobic treatment on one or more surfaces of said metal foil;
(iii) an average specific acoustic resistance of less than about 11 Rayls MKS from 250-300 Hz;
(iv) an average specific acoustic reactance magnitude of less than about 1 Rayls MKS from 250-300 Hz; and
(v) an instantaneous water entry pressure value of greater than about 11 cm.
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22. A method of protecting an acoustic transducer disposed in a housing having an aperture comprising the steps of:
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(a) providing a protective acoustic cover assembly disposed proximate said aperture between said acoustic transducer and said housing, said protective acoustic cover assembly comprising;
(i) a metal foil with perforations, and (ii) a treatment on one or more surfaces of said metal foil;
(b) mounting said protective acoustic cover assembly adjacent said aperture to protect said acoustic transducer from particulates and liquid ingress. - View Dependent Claims (23, 24, 25)
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Specification