H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 3/00 (2006.01) E05F 15/00 (2006.01) H01H 1/029 (2006.01) H01H 3/14 (2006.01)
Patent
CA 2219092
A pressure sensitive sparkless switching device includes a layer of piezoresistive cellular polymer foam, at least two conductive layers, and an insulative spacer element having at least one opening. When pressure is applied to the device the piezoresistive foam disposes itself through the opening of the spacer element and makes electrical contact between the conductive layers. The resistance of the piezoresistive foam varies with the amount of pressure applied to provide an analog as well as on-off function. The device may also provide multiple switching, and shear detection capabilities.
Appareil de connexion anti-étincelle sensible à la pression. Cet appareil comprend : une couche de mousse de polymère alvéolaire piézorésistante; au moins deux couches conductrices; un écarteur isolant présentant au moins une ouverture. Lorsqu'une pression est exercée sur l'appareil, la mousse piézorésistante se dépose dans l'ouverture de l'écarteur et crée un contact électrique entre les couches conductrices. La résistance de la mousse piézorésistante varie selon la pression exercée pour fournir des fonctions analogiques et de marche-arrêt. L'appareil peut aussi comprendre des fonctions de commutation multiple et de détection de cisaillement.
Burgess Lester E.
Mcfadden Fincham
LandOfFree
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