Contactless signaling device
First Claim
1. A signaling device comprising, in combination, a coil, an armature driven by said coil, a means for signaling adjacent said armature, said armature engaging said means for signaling, said armature including a shutter portion reciprocately movable along a predetermined path, a light source member and a light sensing member positioned on opposed sides of said predetermined path, a D.C. power source in communication with said light source, said light sensing member and said coil, whereby when the current to said coil is interrupted or resumed by the reciprocal movement of said shutter portion between said light source and said light sensing member said means for signaling is actuated.
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Accused Products
Abstract
A contactless signaling device for operating a horn or bell is disclosed. The signaling device has an electro-magnetic coil which drives an armature. A light source is positioned opposite a light sensor and a shutter portion of the armature moves between the source and the sensor periodically blocking the light flow. The light sensor is in electrical communication with the electro-magnetic coil. A spring connected to the armature moves the shutter portion when current is not supplied to the coil thereby supplying the desired pulsing as the armature striker engages a horn diaphragm or bell gong.
22 Citations
14 Claims
- 1. A signaling device comprising, in combination, a coil, an armature driven by said coil, a means for signaling adjacent said armature, said armature engaging said means for signaling, said armature including a shutter portion reciprocately movable along a predetermined path, a light source member and a light sensing member positioned on opposed sides of said predetermined path, a D.C. power source in communication with said light source, said light sensing member and said coil, whereby when the current to said coil is interrupted or resumed by the reciprocal movement of said shutter portion between said light source and said light sensing member said means for signaling is actuated.
- 8. A signaling device comprising, in combination, an electro-magnetic coil, an armature adjacent said coil and moved by said coil, a means for signaling, said armature including a striker portion for engaging said means for signaling, said armature including a shutter portion movable along a predetermined path, a light source member and a light sensing member positioned on opposed sides of said predetermined path, circuit means operatively connected between said light source member, said light sensing member and said coil for alternately causing current to flow and then cease to flow through said coil and whereby said shutter portion is reciprocately moved along said predetermined path between said light source member and said light sensing member.
Specification