Low-torque, interchangeable-rotor electric motor

Details Low-torque, interchangeable-rotor electric motor Low-torque, interchangeable-rotor electric motor

1997-02-12

1998-04-14

LaBalle, Clayton E.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 80, 362282, 362284, H02K 1100, H02K 706

Patent

active

057396043

ABSTRACT:
The stator of an electric motor is provided by coils 22 disposed in an interrupted-annular array about a central space such that a path A through the array is provided whereby a selected one of a plurality of rotors 21 can be moved in the plane of and through the array into and out of said central space. In the preferred embodiment each rotor 21 is a gobo freely rotatable on a wheel which can be indexed to bring it into a light path, when it will be positioned to be rotated when the coils 22 are energised. The non-annular disposition of the coils 22 results in a motor of low torque but it is is adequate to rotate a gobo disc, which is simply a perforated sheet of metal. As applied to a disco lighting unit the motor of the invention provides a much cheaper and simpler drive arrangement for gobo discs.

REFERENCES:
patent: 4891738 (1990-01-01), Richardson et al.
patent: 4945459 (1990-07-01), Ferren et al.
patent: 5015903 (1991-05-01), Hancock et al.
patent: 5113332 (1992-05-01), Richardson
patent: 5198939 (1993-03-01), Hewett
patent: 5402326 (1995-03-01), Belliveau
patent: 5517388 (1996-05-01), Hutschisson
patent: 5537303 (1996-07-01), Stacy

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