Metal working – Method of mechanical manufacture – Electrical device making
Patent
1986-01-06
1987-07-21
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
181129, 264222, 264DIG30, H04R 3100
Patent
active
046808566
ABSTRACT:
An acoustic monitoring device for sound sensing in the recording, reproduction, broadcasting, or transmission of sounds, and a process for forming the device. The acoustic monitoring device is shaped like a human head equipped with anatomical features which accurately reproduce the shape of the auricles, the auditory meatus, the Eustachian tubes, and the nasal and oral cavities. Membranes responsive to sound pressures are located at the positions of the ear drums or other auditory organs. The device is produced by a process that includes forming a first mold on a human head, forming a casting from that mold, forming a second mold on the casting, and painting the second mold with a liquid silicone rubber which is allowed to dry to form resilient casting segments simulating the human head. Anatomical features simulating the brain and internal members defining the Eustachian tubes and the nasal and oral cavities are provided within a skull model. A pair of membranes is placed within the skull model at the location of the eardrums or other auditory organs. These membranes are coupled to acoustic members which provide electrical signals on wires exiting the skull model. The silicon rubber casting segments are transferred to the exterior of the skull model giving the acoustic monitoring device the appearance and characteristics of the original human head.
REFERENCES:
patent: 3985960 (1976-10-01), Wallace, Jr.
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