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Silent electromagnetic alarm

  • US 5,365,497 A
  • Filed: 05/03/1994
  • Issued: 11/15/1994
  • Est. Priority Date: 05/18/1993
  • Status: Expired due to Term
First Claim
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1. A non-acoustic alarm for a device supplying information such as time information, said alarm comprising motor means which can be electrically driven and which is associated with a mass adapted to be set in motion under the action of the motor means in order to furnish a vibratory effect, the motor means including an electromagnetic motor fixedly mounted on support means comprising elastic coupling elements which are associated with said mass and cause said mass to assume a quasi-linear oscillating motion relative to the electromagnetic motor when the motor is operated.

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