Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1995-05-30
1996-04-09
Swann, Glen
Communications: electrical
Condition responsive indicating system
Specific condition
307117, 340429, G08B 1302
Patent
active
055065686
ABSTRACT:
A shock sensor includes a mass suspended in a flexible support arranged to resonate when subjected to a mechanical shock, a microphone spaced closely to the mass, the mass and microphone forming a first air pressure chamber with the flexible support for transmittal therethrough of air pressure waves from the resonating mass to the microphone, the microphone arranged to produce an electronic signal when it detects changes in air pressure from the pressure waves traveling through the chamber.
REFERENCES:
patent: 5323141 (1994-06-01), Petek
patent: 5376919 (1994-12-01), Rickman
Murphey John J.
Nutek Corporation
Swann Glen
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