X-ray or gamma ray systems or devices – Beam control – Antiscatter grid
Patent
1989-04-10
1990-04-03
Church, Craig E.
X-ray or gamma ray systems or devices
Beam control
Antiscatter grid
378154, 378176, G21K 100
Patent
active
049146858
ABSTRACT:
A spot film device suitable for use with the radiographic system and having a device for carrying and oscillating a grid which serves to absorb X-rays scattered from an object to be radiographed. Rotation force generated by a motor is used not only to move the grid between radiographic and parking positions but also to oscillate the grid. This enables the grid carrier system to be made comparatively simple in construction. In addition, the grid is oscillated over a certain range by the rotation force transmitted from the motor, so that comparatively high reliability can be guaranteed in oscillating the grid.
REFERENCES:
patent: 2132774 (1938-10-01), Brown
patent: 2922046 (1960-01-01), Billin
patent: 3710106 (1973-01-01), Loncher et al.
patent: 4099063 (1978-07-01), Pury et al.
patent: 4542521 (1985-09-01), Hahn et al.
patent: 4731806 (1988-03-01), Takahara
Church Craig E.
Freeman John C.
Kabushiki Kaisha Toshiba
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