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US 6,578,283 B2Granted
Position transducer
AssigneeSony Precision Technology Inc.
InventorEiichi Nishi
Life of this patent
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Abstract
A position transducer in which a carriage 32 and slider 33 are coupled to each other by tension coil springs 41A and 41B each having an elasticity in a direction in which the carriage 32 and slider 33 are attracted towards each other, with the carriage 32 and slider 33 being butted to each other with a rolling bearing placed at one end of the carriage 33 in the moving direction and which has a ball 40 held by a plane bearing 37 and conical bearing 39.
Claims4
A position transducer comprising:
- a long scale having a position detecting graduation provided thereon along a length thereof;
- a carriage moving along the scale and having a detection head that reads the graduation to provide a position detection signal;
- and
- a slider coupled to the carriage and moving the carriage along the length of the scale, wherein
- the carriage and slider are coupled to each other by an elastic member having an elasticity in a direction the carriage and slider are attracted towards each other, with the carriage and slider being butted to each other with a freely rotatable ball placed at one end of the carriage in the moving direction and between them.
2 more elements
Dependencies are inferred from the claim text.