Grid moving apparatus for radiography
AssigneeKabushiki Kaisha Toshiba
InventorHideo Takahata
Life of this patent
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Abstract
A grid moving apparatus for X-ray radiographing comprises a grid for eliminating a scattered X-ray beam, said grid having X-ray transmitting regions and X-ray non-transmitting regions alternately arranged, swinging mechanism for swinging said grid at a radiographing position, and escape mechanism for removing said grid from the radiographing position to a non-radiographing position. The apparatus further comprises engaging mechanism for detachably engaging said swinging mechanism and said grid, in which said grid and said swinging mechanism are engaged with each other to swing the grid, and said grid is disengaged from said swinging mechanism to be removed.
Claims10
A grid moving apparatus for an x-ray radiographing apparatus, comprising:
- a grid for eliminating a scattered X-ray beam, said grid having X-ray transmitting regions and x-ray non-transmitting regions alternately arranged;
- reciprocating means for reciprocating said grid at a constant frequency between imaging positions, said reciprocating means having a motor and a crank shaft for converting rotation of said motor into a linear motion;
- removing means for moving said grid between an imaging position and a non-imaging position;
- and
- engaging means for detachably engaging said reciprocating means and said grid, said engaging means having an engaging member provided at the distal end portion of said crank shaft and a spring means for pressing said engaging member to be frictionally engaged with said grid.
- wherein said grid and said reciprocating means are engaged with each other to reciprocate the grid, and said reciprocating means and said grid are disengaged from each other to move said grid between said imaging position and said non-imaging position.
Dependencies are inferred from the claim text.