Vibrator alerters

Details Vibrator alerters Vibrator alerters

H - Electricity

04

B

H04B 1/16 (2006.01)

Patent

CA 2135434

Vibrator alerter for a portable communications device having a diaphragm forming part of one mass and a second mass including a rigid body of a solenoid. The diaphragm has a marginal edge secured to the second mass and the two masses are relatively movable. The solenoid upon energization acts against the diaphragm stiffeners to cause relative reciprocation of the masses with the movable mass being such a size as to limit its reciprocating movement to frequencies below audio frequencies so as to provide a tactile vibrational characteristic. Either mass is movable, but if the first mass is to move, the diaphragm may need to carry a weight to ensure the first mass is sufficiently large to provide the required vibrational frequency.

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