# US 5,349,140 A · Microphone windscreen

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- Number: US 5,349,140 A
- Document ID: US5349140A
- Status: Granted
- Kind: A
- Application number: 07/926,911
- Filed: 1992-08-07
- Granted: 1994-09-20
- Earliest claimed: 1992-08-07
- Inventors: Lawrence R. Valenzin
- Web page: https://patentgrep.com/patent/US5349140A

## CPC

- H04R 1/086: {Protective screens, e.g. all weather or wind screens}
- H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K)

## Abstract

A windscreen for a remote microphone for mobile radios is disclosed. The sound absorbent material is held in place on the exterior surface of the microphone housing by means which permit easy detachment from the housing, thereby permitting replacement as the sound absorbent material deteriorates with age and exposure to the elements.

## Claims

### Claim 1

A windscreen for a remote microphone used for a mobile two-way radio in which said microphone is imbedded in a microphone housing having an exterior surface, a microphone located within said housing, and a channel between said microphone and the exterior surface of said housing said channel thereby forming an opening in said exterior surface of the housing which windscreen comprises the combination of a sound absorbent material which is a foamed plastic, a Velcro affixed to said sound absorbent material and a mating Velcro fastener affixed to the exterior surface of a microphone housing surrounding the opening in the exterior surface of a microphone housing, said Velcro and said mating Velcro fastener cooperating to retain the sound absorbent material in a demountable fashion over the opening in the exterior surface of a microphone housing formed by the channel leading from the exterior surface of the housing to the microphone.

### Claim 2 (depends on 1)

A windscreen in accordance with claim 1 in which the sound absorbent material has a permitisity such that a column of water 25 centimeters high and 1 centimeter in diameter will pass through a 1 centimeter diameter piece of sound absorbent material in between 3 and 6 seconds.

### Claim 3 (depends on 1)

A windscreen in accordance with claim 1 in which the sound absorbent material has a layer of water repellent material on the surface thereof.

### Claim 4 (depends on 3)

A windscreen in accordance with claim 3 in which the water repellant material is a silicone.