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Audio transmission and reception assembly
   
Document Number
US Patent 3868572
Issued Date
February 25, 1975
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Inventors
Rosenfeld; Jack B. (San Francisco, CA)
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Abstract
An audio transmission reception assembly has a hollow tubular conduit arred to conduct audio messages from a source within a waterproof enclosure, which may be worn by attachment to the clothing of the user, for conduction to the entrance to the ear canal of the user. The tubular conduit has a capillary portion connected adjacent to the source of the audio messages which renders the conduit virtually waterproof even when subjected to underwater conditions. An audio responsive means is contained in the waterproof enclosure and sealed from the outside environment by a protective resilient membrane, and a suitable switch supported on the waterproof enclosure provides means for controllably connecting both the audio responsive means and the source of audio messages to a transmitting and receiving radio such as may be carried on the back of the user.
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Audio transmission and reception assembly - US Patent 3868572 Drawing
Drawing from US Patent 3868572
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Number of Claims:
4
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no comments yet
Published
February 25, 1975
Application Number
05/342,104
Filed
March 16, 1973
US Classification
455/575.6   455/78
Int'l Classification
H04M   1/05   (20060101)   H04M   1/04   (20060101)  
Assistant Examiner
USPTO Field of Search
179/1UW   179/1ST   179/17E   179/17R   179/17G   325/16   325/18   325/66   325/310   325/361   325/352   181/23   340/5T   340/8R  
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Description
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