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1. (WO1997018574) SWITCHES AND SWITCHING SYSTEMS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/018574 International Application No.: PCT/GB1996/002774
Publication Date: 22.05.1997 International Filing Date: 11.11.1996
Chapter 2 Demand Filed: 27.03.1997
IPC:
H01H 1/66 (2006.01) ,H01H 9/40 (2006.01) ,H01H 59/00 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
H
ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
1
Contacts
64
Protective enclosures, baffle plates, or screens for contacts
66
Contacts sealed in an evacuated or gas-filled envelope, e.g. magnetic dry-reed contacts
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
H
ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
9
Details of switching devices, not covered by groups H01H1/-H01H7/104
30
Means for extinguishing or preventing arc between current-carrying parts
40
Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
H
ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
59
Electrostatic relays; Electro-adhesion relays
Applicants:
SMITHS INDUSTRIES PUBLIC LIMITED COMPANY [GB/GB]; 765 Finchley Road London NW11 8DS, GB (AllExceptUS)
BEARDMORE, Geoffrey [GB/GB]; GB (UsOnly)
Inventors:
BEARDMORE, Geoffrey; GB
Agent:
FLINT, Jonathan, McNeill; 765 Finchley Road London NW11 8DS, GB
Priority Data:
9523238.514.11.1995GB
9524653.401.12.1995GB
Title (EN) SWITCHES AND SWITCHING SYSTEMS
(FR) COMMUTATEURS ET SYSTEMES DE COMMUTATEURS
Abstract:
(EN) An electrical switch has an evacuated housing (1) with input and output terminals (2 and 3) each connected to a respective group of metal tracks (25 and 28) extending parallel and insulated from one another. A second silicon plate (31) is cut to form several bridging elements (40), each having a metal layer (34 and 35) on its upper and lower surface. Each bridging element (40) extends transversely above tracks (25 and 28) connected to different ones of the terminals (2 or 3). The housing is closed by a silicon cap (50) having actuating tracks (52) extending above the bridging elements (40), which form an electrostatic actuator with the metal layer (35) on the upper surface of the bridging elements. When a voltage is applied to the electrostatic actuator, the bridging elements (40) are driven down so that they contact tracks (25 and 28) connected to different ones of the terminals (2 and 3) and allow current to flow between them.
(FR) L'invention concerne un commutateur électrique constitué par un boîtier sous vide (1) ayant des bornes d'entrée et de sortie (2 et 3) connectées chacune à un groupe respectif de pistes métalliques (25 et 28) disposées parallèlement et isolées les unes des autres. Une seconde plaque en silicium (31) est découpée pour former un ou plusieurs éléments de pontage (40) ayant chacun une couche métallique (34 ou 35) sur sa surface supérieure et sur sa surface inférieure. Chaque élément de pontage (40) s'étend transversalement au-dessus des pistes (25 et 28) connectées à différentes bornes (2 ou 3). Le boîtier est fermé par un capuchon de silicium (50) ayant des pistes d'actionnement (52) s'étendant au-dessus des éléments de pontage (40) et formant un dispositif d'actionnement électrostatique avec la couche métallique (35) sur la surface supérieure des éléments de pontage. L'application d'une tension au dispositif d'actionnement électrostatique provoque un mouvement descendant des éléments de pontage (40) qui les amène en contact avec les pistes (25 et 28) connectées à différentes bornes (2 et 3) et permet la circulation du courant entre ces bornes.
Designated States: AM, AT, AU, BB, BG, BR, BY, CA, CH, CN, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LK, LR, LT, LU, LV, MD, MG, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TT, UA, UG, US, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0861497US6064126JP2000500274AU1996075792