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US 4,231,078 AGranted
Beam-rotary lamp
AssigneeSasaki Electric Mfg. Co. Ltd.
InventorShozo Hitora
Life of this patent
Estimating the term…
Abstract
In a beam-rotary lamp which has a reflector revolving around an electric lamp, an improvement is presented herein which is characterized by that a rotor from which the reflector is supported upwardly is pushed downwards against a motor shaft by means of a repelling or attracting force of a magnet plate fixed to the shaft. All parts are mounted in a compact space defined by a base and transparent bowl.
Claims10
A beam-rotary lamp comprising a base;
- a transparent globe supported on said base and defining therewith an enclosed space;
- a motor having a driving shaft, said motor being housed within said enclosed space;
- a support shaft carrying a lamp socket within said enclosed space;
- a rotor rotatably supported on said support shaft within said enclosed space and having a periphery;
- a resilient ring positioned about said periphery of said rotor adjacent said driving shaft of said motor;
- a reflector positioned on said rotor to rotate therewith;
- at least one magnetic means fixedly attached to said support shaft for providing a magnetic force to bring said resilient ring into firm frictional contact with said driving shaft of said motor.
4 more elements
Dependencies are inferred from the claim text.