Collimator, X-ray irradiator, and X-ray apparatus

X-ray or gamma ray systems or devices – Beam control – Collimator

Reexamination Certificate

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Details

C378S150000

Reexamination Certificate

active

11017182

ABSTRACT:
A collimator includes a pair of first plate members which define an X-ray passing aperture by a spacing between their opposed end faces, a second plate member which is movable in a direction parallel to a moving direction of the first plate members, a pair of third plate members which are movable symmetrically with each other in a direction perpendicular to the moving direction of the first plate member and which define an X-ray passing aperture by a spacing between their opposed end faces, and a fourth plate member which is movable in a direction parallel to the moving direction of the third plate members.

REFERENCES:
patent: 3668402 (1972-06-01), Palermo et al.
patent: 4200803 (1980-04-01), Becker et al.
patent: 4277685 (1981-07-01), Covic et al.
patent: 5436958 (1995-07-01), Taylor
patent: 5438454 (1995-08-01), Ludewigt et al.
patent: 6449340 (2002-09-01), Tybinkowski et al.
patent: 6788764 (2004-09-01), Saladin et al.
patent: 2002/0126799 (2002-09-01), Saladin et al.
patent: 2002-355242 (2002-12-01), None
Xiaodong Xu et al., Patent Application “Collimator, X-Ray Irradiator, And X-Ray Apparatus” filed Nov. 4, 2004, 17 pgs.

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