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US 8,026,826 B2Granted
Door bell with compact profile
OwnerChuan Hao Chaoinventor
Life of this patent
Estimating the term…
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.
Claims5
A door bell comprising:
- a case having an open space;
- a frame located within the open space of the case to close the open space;
- an electro-magnetic valve connected to the flame and having at least one hit pin, a resilient member mounted to the at least one hit pin and a sound plate located at a position corresponding to the at least one hit pin, two sound boxes cooperated with the sound plate, and
- a circuit board connected to the flame and electronically connected to the electro-magnetic valve.
1 more element
Dependencies are inferred from the claim text.