ELECTROMAGNETIC NON-ACOUSTIC ALARM

A non-acoustic alarm for a portable object includes an electromagnetic motor which can be electrically controlled in order to generate a vibratory effect. The electromagnetic motor includes a movable magnetic circuit and a stationary magnetic circuit. The movable magnetic circuit includes a coil, a...

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Bibliographic Details
Main Authors BORN, Jean-Jacques, POLI, Gian Carlo
Format Patent
LanguageEnglish
Published 15.02.2024
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
HOROLOGY
MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL
MECHANICALLY-DRIVEN CLOCKS OR WATCHES
PHYSICS
TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
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Summary:A non-acoustic alarm for a portable object includes an electromagnetic motor which can be electrically controlled in order to generate a vibratory effect. The electromagnetic motor includes a movable magnetic circuit and a stationary magnetic circuit. The movable magnetic circuit includes a coil, a ferromagnetic core coupled to a magnetic cage forming an extension of the ferromagnetic core. The magnetic assembly of the movable magnetic circuit constitutes a movable magnetic mass of the non-acoustic alarm capable of generating the vibratory effect. The non-acoustic alarm includes resilient connection elements resiliently connecting the movable magnetic circuit to the stationary magnetic circuit. The resilient connection elements are shaped to guide and ensure that the movable magnetic circuit undergoes a linear, or quasi-linear, oscillatory motion during the electrical control of the electromagnetic motor.
Bibliography:Application Number: US202318446605