REAR VIEW MIRROR FOR VEHICLES

1346483 Rear view mirror K A GRELL 19 April 1971 [25 March 1970 5 Feb 1971] 25532/71 Heading B7J [Also in Division G1] An anti-dazzle rear view mirror comprises a tiltable mirror glass 1, silvered on the outside at l<SP>1</SP> and pivotable to a housing 4 at 2, behind a fixed glass 3, the mirror glass being tilted to its anti-dazzle position by the action of an electromagnet 11 the core 12 of which, when energized, repels a permanent magnet 13 and attracts an iron core 14 both of which are attached as shown to a U-shaped cross-section extension 10 which is attached to a bracket 9 glued to the mirror glass, the electromagnet being energized by a control relay 6 controlled by a light sensitive receiver 5 attached to a non-silvered area 5<SP>1</SP> of the mirror; when a predetermined amount of light impinges on the receiver the electromagnet is energized and the mirror glass tilted so as to avoid dazzling (Fig. 4) when the light falls below this level the electromagnet is de-energized and the magnet 13 is attracted to the core 12 of the electromagnet thus returning the mirror glass to its normal position (Fig. 3); the electromagnet, control unit, mirror glass and permanent magnet are all contained within a housing 4. The electromagnet 11, relay 6 and receiver 5 are connected in a circuit having current supply lines 18, 19 and including an adjustable resistor 20 and transistor 22, as described with reference to Fig. 13.