Collimator apparatus and method
Patent 4739173 Issued on April 19, 1988. Estimated Expiration Date: 
August 15, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 15, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1909118 3543384 Electron beam collimator X-ray shield Neutron collimator Block for partially limiting a radiation beam, and a collimator comprising such blocks Patent #: 4534052 InventorsApplicationNo. 06/896730 filed on 08/15/1986US Classes:250/505.1, RADIATION CONTROLLING MEANS378/152With linear leaf motionExaminersPrimary: Anderson, Bruce C.Attorney, Agent or FirmInternational ClassesG21K 1/02 (20060101)A61N 5/10 (20060101) G21K 1/04 (20060101) AbstractA collimator apparatus (10 or 100) including one or more bundles of nested rods (11, 11a or 101 or 101a or 201) which define a surface (112, 112a) which interferes with a beam of radiation is described. The apparatus particularly uses coil spring (48) between and along the axis (a--a or c--c) of the rods which are compressed by blocks (13, 14, 13a and 14a or 103, 104, 103a and 104a) to lock the rods in position in holes in the blocks. The apparatus is particularly useful for shaping radiation beams for patient treatment.Field of SearchRADIATION CONTROLLING MEANS | |
