Apparatus for mechanical transmission

• US 20050254628A1
• Filed: 02/08/2005
• Published: 11/17/2005
• Est. Priority Date: 05/11/2004
• Status: Active Grant

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Chatelin, Romain, Saladin, Jean-Pierre, Pawlak, Celine
• Granted Patent: US 7,073,940 B2
• Time in Patent Office: Days
• US Class Current: 378/197
• CPC Class Codes: A61B 6/56 Details of data transmission or power supply, e.g. use of slip rings

Abstract

An X-ray apparatus has hollow motors providing hinge joints for a mobile part in rotation relative to a reference part. Each of the motors includes a rotor fixed to the mobile part as well as a stator fixed to the reference part. The axis of these motors is indistinguishable from the axis around which the mobile part can go into rotation. The motors facilitate an assembling of the parts of the apparatus in permitting cables or wires to cross through the hollow motors. The hinge joints provide a direct transmission between the mobile and reference parts.

Claims

1. A radiography apparatus comprising:

means for providing a source of radiation that emits a beam along a direction of emission;

means for detecting the radiation located so as to be opposite the emitter and in the direction of emission;

at least one mobile element being capable of going into rotation about a rotation axis relative to a reference element;

the at least one mobile element providing for a movement of the means for providing a source of radiation and the means for detecting in space;

at least one hollow motor comprising a ring-shaped stator and a ring-shaped rotor; and

the hollow portion of the motor being oriented on an axis of the motor and being located about the motor axis, the motor axis being indistinguishable from the rotational axis about which the mobile elements may go into rotation.

2. The apparatus according to claim 1 wherein the ring-shaped rotor is fixed to the mobile element while the ring-shaped stator is fixed to the reference element.

3. The apparatus according to claim 1 wherein the ring-shaped stator surrounds the ring-shaped rotor.

4. The apparatus according to claim 2 wherein the ring-shaped stator surrounds the ring-shaped rotor.

5. The apparatus according to claim 1 wherein the ring-shaped stator has a diameter ranging from 300 to 500 mm.

6. The apparatus according to claim 2 wherein the ring-shaped stator has a diameter ranging from 300 to 500 mm.

7. The apparatus according to claim 3 wherein the ring-shaped stator has a diameter ranging from 300 to 500 mm.

8. The apparatus according to claim 1 wherein the hollow motor is a direct-current contactless or brushless motor.

9. The apparatus according to claim 2 wherein the ring-shaped stator has a diameter ranging from 300 to 500 mm.

10. The apparatus according to claim 3 wherein the ring-shaped stator has a diameter ranging from 300 to 500 mm.

11. The apparatus according to claim 5 wherein the ring-shaped stator has a diameter ranging from 300 to 500 mm.

12. The apparatus according to claim 1 wherein the hollow type motor provides for a shift of the at least one mobile element at an angle ranging from 320°

to 350°

about a given direction.

13. The apparatus according to claim 2 wherein the hollow type motor provides for a shift of the at least one mobile element at an angle ranging from 320°

to 350°

about a given direction.

14. The apparatus according to claim 3 wherein the hollow type motor provides for a shift of the at least one mobile element at an angle ranging from 320°

to 350°

about a given direction.

15. The apparatus according to claim 5 wherein the hollow type motor provides for a shift of the at least one mobile element at an angle ranging from 320°

to 350°

about a given direction.

16. The apparatus according to claim 8 wherein the hollow type motor provides for a shift of the at least one mobile element at an angle ranging from 320°

to 350°

about a given direction.

17. The apparatus according to claim 1 comprising a brake.

18. The apparatus according to claim 2 comprising a brake.

19. The apparatus according to claim 3 comprising a brake.

20. The apparatus according to claim 5 comprising a brake.

21. The apparatus according to claim 8 comprising a brake.

22. The apparatus according to claim 12 comprising a brake.

23. The apparatus according to claim 17 wherein the brake is a failsafe brake.

24. The apparatus according to claim 1 wherein the at least one hollow motor comprises:

a first hollow motor;

a second hollow motor;

the first and second hollow motors being oriented orthogonal to each other.

25. The apparatus according to claim 2 wherein the at least one hollow motor comprises:

a first hollow motor;

a second hollow motor;

the first and second hollow motors being oriented orthogonal to each other.

26. The apparatus according to claim 3 wherein the at least one hollow motor comprises:

a first hollow motor;

a second hollow motor;

the first and second hollow motors being oriented orthogonal to each other.

27. The apparatus according to claim 5 wherein the at least one hollow motor comprises:

a first hollow motor;

a second hollow motor;

the first and second hollow motors being oriented orthogonal to each other.

28. The apparatus according to claim 8 wherein the at least one hollow motor comprises:

a first hollow motor;

a second hollow motor;

the first and second hollow motors being oriented orthogonal to each other.

29. The apparatus according to claim 12 wherein the at least one hollow motor comprises:

a first hollow motor;

a second hollow motor;

the first and second hollow motors being oriented orthogonal to each other.

30. The apparatus according to claim 17 wherein the at least one hollow motor comprises:

a first hollow motor;

a second hollow motor;

the first and second hollow motors being oriented orthogonal to each other.

31. The apparatus according to claim 23 wherein the at least one hollow motor comprises:

a first hollow motor;

a second hollow motor;

the first and second hollow motors being oriented orthogonal to each other.

32. The apparatus according to claim 1 wherein

parts of the apparatus are connected by cables or wires;

and

the cables or wires pass through the at least one hollow motor.

33. The apparatus according to claim 2 wherein

parts of the apparatus are connected by cables or wires;

and

the cables or wires pass through the at least one hollow motor.

34. The apparatus according to claim 3 wherein

parts of the apparatus are connected by cables or wires;

and

the cables or wires pass through the at least one hollow motor.

35. The apparatus according to claim 5 wherein

parts of the apparatus are connected by cables or wires;

and

the cables or wires pass through the at least one hollow motor.

36. The apparatus according to claim 8 wherein

parts of the apparatus are connected by cables or wires;

and

the cables or wires pass through the at least one hollow motor.

37. The apparatus according to claim 12 wherein

parts of the apparatus are connected by cables or wires;

and

the cables or wires pass through the at least one hollow motor.

38. The apparatus according to claim 17 wherein

parts of the apparatus are connected by cables or wires;

and

the cables or wires pass through the at least one hollow motor.

39. The apparatus according to claim 23 wherein

parts of the apparatus are connected by cables or wires;

and

the cables or wires pass through the at least one hollow motor.

40. The apparatus according to claim 24 wherein

parts of the apparatus are connected by cables or wires;

and

the cables or wires pass through the at least one hollow motor.

41. The apparatus according to claim 1 wherein the at least one hollow motor and the at least one mobile element provides a direct transmission for rotation and a gear reduction ratio of 1.

42. The apparatus according to claim 2 wherein the at least one hollow motor and the at least one mobile element provides a direct transmission for rotation and a gear reduction ratio of 1.

43. The apparatus according to claim 3 wherein the at least one hollow motor and the at least one mobile element provides a direct transmission for rotation and a gear reduction ratio of 1.

44. The apparatus according to claim 5 wherein the at least one hollow motor and the at least one mobile element provides a direct transmission for rotation and a gear reduction ratio of 1.

45. The apparatus according to claim 8 wherein the at least one hollow motor and the at least one mobile element provides a direct transmission for rotation and a gear reduction ratio of 1.

46. The apparatus according to claim 12 wherein the at least one hollow motor and the at least one mobile element provides a direct transmission for rotation and a gear reduction ratio of 1.

47. The apparatus according to claim 17 wherein the at least one hollow motor and the at least one mobile element provides a direct transmission for rotation and a gear reduction ratio of 1.

48. The apparatus according to claim 23 wherein the at least one hollow motor and the at least one mobile element provides a direct transmission for rotation and a gear reduction ratio of 1.

49. The apparatus according to claim 24 wherein the at least one hollow motor and the at least one mobile element provides a direct transmission for rotation and a gear reduction ratio of 1.

50. The apparatus according to claim 32 wherein the at least one hollow motor and the at least one mobile element provides a direct transmission for rotation and a gear reduction ratio of 1.