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Electret transducer with tapered acoustic chamber
What is claimed is: 1. A electret transducer comprising a backplate coated on one face with a dielectric material, a diaphragm spaced apart from and positioned parallel ...
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Electret transducer
What is claimed is: 1. An electret transducer comprising: a diaphragm, first and second electrodes disposed one on each side of the diaphragm with at least one electrode ...
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Electret microphone
The foregoing problems are solved in accordance with an embodiment of the invention wherein an electret transducer comprises a uniformly radially tensioned electret ...
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Audio transducer apparatus
What i claimed is: 1. Transducer apparatus for transmitting electromagnetic signals to a wall, comprising, in combination: housing means for holding electromagnetic ...
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Articulated earmuff-to-headband attachment construction
The embodiments of the invention in which an exclusive property or privilege is claimed are defined in the following claims: 1. An articulated earmuff-to-headband ...
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Convertible mask, ascot and visor garment and method of conversion therebetween
It is an overall object of the present invention to provide an improved garment which is useful as a cold weather face and neck mask. A further object is to provide such ...
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Solar generator mounting structure
OF THE DRAWINGS My invention, with reference to FIG. 1, provides a segment 10 of a dome shaped structure rotatably mounted on an underlying dome structure 5. The ...
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FM receiver with improved adjacent-channel rejection
What is claimed: 1. An FM receiver comprising a channel selection and intermediate frequency circuit having a signal output, a phase-locked loop frequency demodulator ...
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Vacuum power interrupting device
OF THE PREFERRED EMBODIMENT Referring to FIG. 1, there is illustrated one form of a vacuum power interrupting device according to the present invention. The vacuum ...
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Method and apparatus for implementing carrierless amplitude/phase encoding in a network
The present invention is a method and apparatus for transmitting data between a least a first and second station over a network interface, such as the well-known ...
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