US 5,828,012 A · Protective cover assembly having enhanced acoustical characteristics

Abstract

A sound-transmissive cover assembly which provides protection from the ambient environment to transducers such as microphones, loudspeakers, buzzers, ringers, and other delicate devices; and across which sound energy can pass with very low attenuation. The cover assembly has a protective membrane layer and a porous support material layer which are selectively bonded together at least in the outer region near their edges. An inner unbonded region surrounded by the bonded outer region is provided so that the protective membrane and porous support layer can vibrate or move independently in response to acoustic energy passing through them. An embodiment of the assembly includes at least one acoustic gasket attached to one or both of the layers so as to not impede independent movement of the layers.

Claims17

Dependent claims

A sound-transmissive protective cover assembly comprising:

(a) a protective membrane layer having first and second surfaces and a perimeter defined by its edges,
(b) a porous support layer having first and second surfaces;
one said surface of each of said protective membrane layer and porous support layer selectively bonded together to form a bonded outer region within said perimeter and, surrounded by said bonded outer region, an unbonded inner region wherein said protective membrane and said porous support material are free to move independently in response to acoustic energy passing therethrough, and thereby minimally attenuating said acoustic energy.

Dependencies are inferred from the claim text.

Protective cover assembly having enhanced acoustical characteristics

Life of this patent

Protective cover assembly having enhanced acoustical characteristics

Life of this patent

Abstract

Claims17