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US 6,270,391 B1Granted
Lighting system for rotating object
OwnerTryggvi Emilssoninventor
Life of this patent
Estimating the term…
Abstract
This invention relates to a lighting system for a rotating object wherein the lights are made to appear stationary by being turned on and off in synchrony with the rotation of the object. This synchronization is achieved by utilizing magnetic field sensors which determine the instantaneous orientation of the object relative to the Earth's magnetic field.
Claims8
A rotatable object comprising
- (a) a body member having a central axis about which said member is adapted to rotate,
- (b) at least one light emitting device,
- (c) a power source to power said light emitting device, and
- (d) a means for sensing a magnetic field and delivering an electrical signal, causing power to be delivered to said light emitting device only when the object is moving through said magnetic field, and wherein said signal is independent of the proximity of a metal object to the sensor.
1 more element
A disc shaped aerial toy comprising:
- (a) a disc shaped body member having a central axis about which the body member spins in a sustained flight when the body member is hurled into the air,
- (b) at least one electronically-powered lighting means supported by the body member, and operative for producing a distinctive light signal when actuated;
- (c) a battery supported by the body member, and operative for supplying electrical power for the lighting means;
- and
- (d) a magnetic field sensor means for sensing the movement of the body member through the Earth's magnetic field lines, and delivering an electrical signal, causing power to be delivered to said lighting means.
2 more elements
A toy comprising:
- (a) two substantially round parts each having a planar surface the two planar surfaces being parallel and connected along their centerlines by a short thin shaft so that a gap remains between the parallel surfaces;
- (b) a string loosely attached to the shaft that can be wound up in the gap between the two planar surfaces, and used to impart a rotary motion on the toy;
- (c) at least one electronically-powered lighting means supported by one or both of the round parts, and operative for producing a distinctive light signal when actuated;
- (d) a battery supported by the round parts, and operative for supplying electrical power for the lighting means;
- and
- (e) a means for sensing movement of the toy in or through the Earth's magnetic field and delivering an electrical signal, causing the power to be delivered to the lighting means.
3 more elements
Dependencies are inferred from the claim text.