Audio speaker housing for protective helmets

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Description

FIG. 1 is a top plan view of an audio speaker housing for protective helmets showing my new design;

FIG. 2 is a side elevation thereof;

FIG. 3 is a cross-section taken on line 3--3 of FIG. 1; and

FIG. 4 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
2619639 December 1952 Hendler
3889190 June 1975 Palmer
3890475 June 1975 Denhart
3916312 October 1975 Campbell
Patent History
Patent number: D249508
Type: Grant
Filed: Mar 15, 1976
Date of Patent: Sep 19, 1978
Inventors: Ronald D. Coughlin (Melbourne, FL), Kenneth E. Pohlmann, Jr. (Melbourne, FL)
Primary Examiner: Bernard Ansher
Application Number: 5/667,184
Classifications
Current U.S. Class: D14/37; D14/36
International Classification: D1403;