Curtain assembly, scanning system, and method for assembling scanning system

1. A curtain assembly for use with a conveyor having a surface for transporting an object, said curtain assembly comprising:

at least one curtain comprising at least one slat, said at least one curtain is configured to be rotatably coupled to a housing of a scanning system having a radiation source and a detector, said at least one curtain is further configured to facilitate drawing the object into the scanning system housing while substantially preventing radiation emitted from the radiation source from exiting the housing through said at least one curtain, wherein said at least one curtain is configured to rotate about an axis that is not substantially parallel to the surface of the conveyor.

2. A curtain assembly in accordance with claim 1 , wherein said at least one curtain further comprises a substantially circular top portion, said at least one slat hangs vertically from said substantially circular top portion.

3. A curtain assembly in accordance with claim 2 , wherein said substantially circular top portion has a radius, and said at least one curtain comprises at least one slat positioned substantially perpendicular to the radius of said substantially circular top portion and at least one slat positioned substantially parallel to the radius of said substantially circular top portion.

4. A curtain assembly in accordance with claim 1 , wherein said at least one slat tapers from a slat bottom to a slat top.

5. A curtain assembly in accordance with claim 1 , wherein said at least one slat at least partially defines a cavity within said at least one curtain.

6. A curtain assembly in accordance with claim 1 , wherein said at least one curtain further comprises an inner drum comprising at least one slat and an outer drum comprising at least one slat.

7. A curtain assembly in accordance with claim 1 , wherein said at least one curtain further comprises at least two curtains coupled to the housing and a motor configured to rotate said at least two curtains.

8. A curtain assembly in accordance with claim 7 , wherein said motor is further configured to rotate a first curtain of said at least two curtains in a first direction and rotate a second curtain of said at least two curtains in a second direction opposite the first direction.

9. A scanning system, comprising:

a housing defining an examination space;

a conveyor comprising a surface, said conveyor configured to transport a stream of objects positioned on said surface through said examination space;

at least one curtain comprising at least one slat, said at least one curtain is rotatably coupled to said housing, wherein said at least one curtain is configured to rotate about an axis that is not substantially parallel to said surface of said conveyor;

a radiation source configured to emit radiation through said examination space; and

a detector configured to detect radiation emitted from said radiation source.

10. A scanning system in accordance with claim 9 , wherein said at least one curtain further comprises a substantially circular top portion, said at least one slat hangs vertically from said substantially circular top portion.

11. A scanning system in accordance with claim 10 , wherein said substantially circular top portion has a radius and said at least one curtain comprises at least one slat positioned substantially perpendicular to the radius of said substantially circular top portion and at least one slat positioned substantially parallel to the radius of said substantially circular top portion.

12. A scanning system in accordance with claim 9 , wherein said at least one slat tapers from a slat bottom to a slat top.

13. A scanning system in accordance with claim 9 , wherein said at least one slat at least partially defines a cavity within said at least one curtain.

14. A scanning system in accordance with claim 9 , wherein said at least one curtain further comprises an inner drum comprising at least one slat and an outer drum comprising at least one slat.

15. A scanning system in accordance with claim 9 , wherein said at least one curtain further comprises at least two curtains coupled to said housing and a motor configured to rotate said at least two curtains.

16. A scanning system in accordance with claim 15 , wherein said motor is further configured to rotate a first curtain of said at least two curtains in a first direction and rotate a second curtain of said at least two curtains in a second direction opposite the first direction.

17. A method of assembling a scanning system, the scanning system including a housing, a radiation source configured to emit radiation within the scanning system, and a conveyor having a surface for transporting an object through the housing, said method comprising:

coupling at least one slat to at least one top portion to form at least one curtain; and

rotatably coupling the at least one curtain to the housing, the at least one curtain is configured to facilitate drawing the object into the housing and to substantially prevent radiation from the radiation source from exiting the scanning system through the at least one curtain, wherein the at least one curtain is configured to rotate about an axis that is not substantially parallel to the surface of the conveyor.

18. A method in accordance with claim 17 , further comprising rotatably coupling at least two curtains to the housing and coupling the at least two curtains together with a drive chain.

19. A method in accordance with claim 18 , further comprising coupling a motor to the drive chain, the motor configured to rotate a first curtain of the at least two curtains in a first direction and rotate a second curtain of the at least two curtains in a second direction opposite the first direction.

20. A method in accordance with claim 17 , further comprising coupling an inner drum and an outer drum to the at least one curtain, and coupling at least one slat to each of the inner drum and the outer drum.