Telephone alerter

Details Telephone alerter Telephone alerter

H - Electricity

04

R

H04R 1/02 (2006.01) F16B 21/02 (2006.01) G10K 11/00 (2006.01) H04M 1/03 (2006.01) H04M 19/04 (2006.01) H04R 1/10 (2006.01)

Patent

CA 2069659

In a telephone alerter a transducer disc is held onto a printed circuit board by an annular housing which is detachable from the board. The housing has spaced feet which are received through apertures in the board and the housing is then rotated to engage the feet with one side of the board and hold the housing in position. The transducer disc is easily removed by rotating the housing in the opposite direction to withdraw it from the printed circuit board. Preferably, the disc is retained within the housing by an O-ring retainer which is compressed between the printed circuit board and the disc. Upon removal of the housing, the disc and retainer may then be immediately withdrawn from the housing.

L'invention est un avertisseur téléphonique dans lequel un disque transducteur est fixé sur une carte de circuit imprimé au moyen d'un boîtier annulaire amovible. Ce boîtier est muni de pattes espacées qui pénètrent dans des ouvertures pratiquées dans la carte et on le fait tourner pour coupler les pattes à l'un des côtés de la carte et le maintenir en place. On peut facilement enlever le disque transducteur en faisant tourner le boîtier en sens opposé pour l'enlever de la carte de circuit imprimé. Dans la concrétisation privilégiée de l'invention, le disque est fixé à l'intérieur du boîtier par une bague de retenue qui est comprimée entre la carte de circuit imprimé et le disque. Une fois le boîtier enlevé, le disque et la bague peuvent facilement être retirés de celui-ci.

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