Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2007-12-04
2007-12-04
Tamai, Karl (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S156080, C310S0400MM, C396S508000
Reexamination Certificate
active
11167183
ABSTRACT:
A driving apparatus includes a magnet that is magnetized to at least two poles in a circumferential direction and fixed to a rotor axis formed with a soft magnetic material, and first and second coils arranged in the same direction as the magnet with respect to the magnet-axis direction and arranged adjacent to an end surface of the magnet in the magnet-axis direction. The first magnetic pole portion is excited by energizing the first coil, and the second magnetic pole portion is excited to a pole opposite to the first magnetic pole portion by energizing the second coil. A yoke portion is formed with a soft magnetic material for supporting the first and second magnetic pole portions. The first magnetic pole portion includes a first coil insertion portion that is inserted to an internal diameter portion of the first coil, and a first magnet facing portion that is arranged to face a magnetized outer circumferential portion of the magnet with a predetermined gap at a predetermined angle. The second magnetic pole portion includes a second coil insertion portion that is inserted to an internal diameter portion of the second coil, and a second magnet facing portion that is arranged to face a magnetized outer circumferential portion of the magnet with a predetermined gap at a predetermined angle.
REFERENCES:
patent: 5780944 (1998-07-01), Sakamoto
patent: 2000152591 (2000-05-01), None
patent: 2002-049076 (2002-02-01), None
Translation of JP 2000152591 A.
Scheuermann David W.
Tamai Karl
LandOfFree
Driving apparatus and light amount adjustment apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Driving apparatus and light amount adjustment apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driving apparatus and light amount adjustment apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3835766