F - Mech Eng,Light,Heat,Weapons – 24 – C
Patent
F - Mech Eng,Light,Heat,Weapons
24
C
F24C 7/08 (2006.01) H01H 7/00 (2006.01) H01H 43/02 (2006.01) H05B 1/02 (2006.01)
Patent
CA 2239002
A precautionary timer for installation in a kitchen range, as a replacement of a plug-type fuse protecting one of the heating elements of the kitchen range. In a first aspect of the invention, the precautionary timer comprises a threaded fuse stock having first and second electrically conductive terminals set apart from one another, and conductive segments mounted inside the threaded fuse stock and connected to the first and second terminals. A timing unit comprising a low voltage solid state timer and an electronic switch is also mounted inside the threaded fuse stock. The solid state timer is powered by a current transformer sampling power from the current flowing in one of the conductive segments. The semiconductor switch is connected in series with the conductive segments and the first and second terminals, for selectively electrically connecting and disconnecting the first and second terminals to and from one another.
Cette invention concerne une minuterie de protection destinée à remplacer le fusible bouchon de protection des éléments chauffants d'une cuisinière. Selon un aspect de l'invention, la minuterie de protection est intégrée à un fusible bouchon fileté comportant une première et une seconde bornes conductrices espacées l'une de l'autre, des segments conducteurs montés à l'intérieur et raccordés auxdites première et seconde bornes. Un bloc-minuterie comprenant un compteur de temps transistorisé basse tension et un interrupteur électronique est également disposé à l'intérieur du fusible bouchon fileté. Le compteur transistorisé est alimenté par un transformateur de mesure échantillonnant le courant transitant par un des segments conducteurs. L'interrupteur électronique est connecté en série aux segments conducteurs et aux première et seconde bornes de manière à maintenir et à couper sélectivement le contact entre ces dernières.
Carter Jack J.
P.eng. Theriault Mario D.
LandOfFree
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