Back to results
US 5,117,137 AGranted
Stepping motor for use in a camera with multiple shutters
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorTakumi Kobayashi
Life of this patent
Estimating the term…
Abstract
A stepping motor unit includes an annular motor mount having a center opening, a rotor which is rotatably supported on the annular motor mount, and a pair of stators which are supported on the annular motor mount to cause the rotor to rotate due to magnetic force. The stators have linear coil holders for holding the coils, which are arranged substantially along the inner and outer peripheries of the annular motor mount.
Claims12
A stepping motor unit comprising:
- an annular motor mount having an inner periphery which defines a center opening and an outer periphery which is spaced from the inner periphery by a constant distance;
- a rotor which is rotatably supported on said annular motor mount;
- and,
- a pair of stators which are supported on the annular motor mount to cause the rotor to rotate due to a magnetic force, said pair of stators tangentially contacting said inner periphery;
- said stators provided with linear coil holders for holding coils, said stators arranged substantially along said inner and outer peripheries of said motor mount.
2 more elements
A stepping motor unit comprising:
- an annular motor mount having an inner periphery which defines a center opening and an outer periphery which is spaced from the inner periphery by a constant distance;
- a rotor which is rotatably supported on said annular motor mount;
- and,
- a pair of stators which are supported on said annular motor mount to cause said rotor to rotate due to magnetic force;
- said stators mounted on said annular motor mount tangentially contacting said inner periphery without projecting from said inner and outer peripheries of said motor mount.
2 more elements
Dependencies are inferred from the claim text.