Door bell with compact profile
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United States of America Patent
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Sep 27, 2011
Grant Date -
Sep 16, 2010
app pub date -
Mar 12, 2009
filing date -
Mar 12, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A door bell includes a case and a frame is located within the open space of the case. An electro-magnetic valve is connected to the frame and controls two hit pins and a circuit board is connected to the frame and electronically connected to the electro-magnetic valve. Two resilient members are mounted to the hit pins which hit a sound plate located beneath the hit pins to generate sound. The sound is amplified by two sound boxes. The circuit board transfers alternative current into direct current so that no hulky part projecting from the door bell.
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Family
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