Synchronous motor with solid rotor axially displaced relative to

Details Synchronous motor with solid rotor axially displaced relative to Synchronous motor with solid rotor axially displaced relative to

1996-07-29

1999-09-21

Stephan, Steven L.

Illumination

With static structure

With border, fence, gate or awning

310257, H02H 3700

Patent

active

059544180

ABSTRACT:
The invention provides in a first aspect a novel synchronous motor in which the rotor comprises a substantially solid multi-pole magnet axially displaced from the coil which, itself, is of substantially the same diametrical size. With this arrangement a very powerful motor can be provided for a relatively small size and is suitable for use in powering ornaments such as Christmas tree ornaments direct from a socket of a fairy light string or decorative lights. In a second aspect of the invention, reciprocation means are provided suitable for use with the synchronous motor of the first aspect which can automatically raise and lower ornaments and similar novelty items. In a third aspect of the invention reciprocation means is provided which may be used either with the synchronous motor of the invention or with a conventional D.C. motor to provide for winding and sudden unwinding of a cord and hence an ornament or a novelty item attached thereto.

REFERENCES:
patent: 3028512 (1962-04-01), Sorchy
patent: 3103393 (1963-09-01), Kohlhagen
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patent: 3427485 (1969-02-01), Dotto
patent: 3448306 (1969-06-01), Murray
patent: 4714853 (1987-12-01), Palmero et al.
patent: 4942325 (1990-07-01), Fukaya
patent: 4980608 (1990-12-01), Morrison
patent: 5260616 (1993-11-01), Mizutani et al.
patent: 5283487 (1994-02-01), Oki et al.
patent: 5291084 (1994-03-01), Shiotsuki et al.
patent: 5568970 (1996-10-01), Prineppi
patent: 5598046 (1997-01-01), Miyazawa et al.

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