US3743843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tomographic x-ray system with a movable table
Assignee: Liebel Flarsheim Co LLC
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Filing: 1971-09-07
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Granted: 1973-07-03
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Expires: 1991-09-07
Abstract
Abstract An x-ray table having a table support, a stationary film cabinet mounted on the support, and a table mounted on the support for longitudinal movement with respect to the film cabinet is provided with means for obtaining plane section radiographs. A tube column is pivotally mounted to the table support and the xray tube is mounted on the other end of this column. A plane selector mechanism is mounted on the table. A vertically adjustable pin on the plane selector is coupled to the tube column in an area between the pivot and the x-ray tube. Thus, as the table is moved longitudinally, the tube column is pivoted through an arc. Switches on the tube column initiate and terminate the exposure as the x-ray moves through its arc. In the preferred embodiment the coupling pin on the plane selector mechanism may be disengaged from the tube column and the tube column may be locked in one position so that the apparatus may also be used for conventional radiographic procedures. The plane selector mechanism is releasably mounted on the table so that it does not interfere with lateral movement of the table.
Inventors
- 👤 G Reser
- 👤 F Riesz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:54
CPC Classifications
G; G21; G21K; G21K5/00; G21K5/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
151 words
A tomographic attachment for an x-ray table assembly having a support, a film cabinet carried by the support, and a table carried by the support and adapted for longitudinal movement past the film cabinet, said attachment comprising: a. a column, means for pivotally mounting the column to said support at a fixed point, means for attaching an x-ray tube to said column at a point displaced from said pivotal mounting means, a channel on the column between said pivotal mounting means and said x-ray tube; and b. a plane selector adapted for attachment to said table, said plane selector having a vertically adjustable pin adapted to ride in said channel in an area of the column between said pivotal mounting means and said x-ray tube and at a predetermined elevation with respect to the table, whereby longitudinal movement of the table pivots the column and the xray tube through an arc.
Claim 2
Dependent Claim
151 words
A tomographic attachment for an x-ray table assembly having a support, a film cabinet carried by the support, and a table carried by the support and adapted for longitudinal movement past the film cabinet, said attachment comprising: a. a column, means for pivotally mounting the column to said support at a fixed point, means for attaching an x-ray tube to said column at a point displaced from said pivotal mounting means, a channel on the column between said pivotal mounting means and said x-ray tube; and b. a plane selector adapted for attachment to said table, said plane selector having a vertically adjustable pin adapted to ride in said channel in an area of the column between said pivotal mounting means and said x-ray tube and at a predetermined elevation with respect to the table, whereby longitudinal movement of the table pivots the column and the xray tube through an arc.
Claim 3
Dependent Claim
55 words
An attachment according to claim 1 wherein said pivotal mounting means locates said column so that it pivots about a point in or near the plane at which x-ray film is located in said film cabinet and said plane sElector engages the tube column at or near the height of the desired plane section radiograph.
Claim 4
Dependent Claim
57 words
An attachment according to claim 1 wherein a channel is attached to the column and said plane selector comprises a vertically adjustable bushing and a pin mounted within said bushing for reciprocation into and out of said channel, whereby the pin may be withdrawn from the channel so that the table and column may be moved independently.
Claim 5
Dependent Claim
66 words
An attachment according to claim 1 a. wherein the said pivotal mounting means comprises a plate adapted to be rigidly attached to said support, said plate having an opening therein; and b. a locking member is mounted on said column and adapted for movement into and out of said opening, whereby said column is locked in one position when said locking member is in said opening.
Claim 6
Dependent Claim
166 words
Apparatus for obtaining plane section radiographs comprising: a. a support; b. a film carried by said support; c. a table carried by said support and adapted for longitudinal movement past said film; d. a column, means for pivotally mounting said column to said support, and an x-ray tube attached to the column at a point displaced from the pivot; and e. means for coupling said table to said column in an area of the column between the pivot and the x-ray tube and at a predetermined elevation with respect to the table, comprising: i. a channel mounted on the column; ii. a vertically adjustable bushing attached to the table; and iii. a pin mounted within the bushing for reciprocation into and out of said channel, whereby longitudinal movement of the table moves the x-ray tube through an arc when the pin is in the channel and the table may be moved without pivoting the column and x-ray tube when the pin is withdrawn from the channel.
Claim 7
Dependent Claim
166 words
Apparatus for obtaining plane section radiographs comprising: a. a support; b. a film carried by said support; c. a table carried by said support and adapted for longitudinal movement past said film; d. a column, means for pivotally mounting said column to said support, and an x-ray tube attached to the column at a point displaced from the pivot; and e. means for coupling said table to said column in an area of the column between the pivot and the x-ray tube and at a predetermined elevation with respect to the table, comprising: i. a channel mounted on the column; ii. a vertically adjustable bushing attached to the table; and iii. a pin mounted within the bushing for reciprocation into and out of said channel, whereby longitudinal movement of the table moves the x-ray tube through an arc when the pin is in the channel and the table may be moved without pivoting the column and x-ray tube when the pin is withdrawn from the channel.
Claim 8
Dependent Claim
167 words
Apparatus for obtaining plane section radiographs comprising: a. a support; b. a film carried by said support; c. a table carried by said support and adapted for longitudinal movement past said film; d. a column, means for pivotally mounting said column to said support, and an x-ray tube attached to the column at a point displaced from the pivot; e. means for coupling said table to said column in an area of the column between the pivot and the x-ray tube and at a predetermined elevation with respect to the table, whereby longitudinal movement of the table moves the x-ray tube through an arc; and f. means for locking the column in one position, said locking means comprising: i. a plate rigidly attached to said support, said plate having an opening therein; and ii. a locking member mounted on said column and adapted for movement into and out of said opening, whereby the column is locked in one position when said locking member is in said opening.
Claim 9
Dependent Claim
167 words
Apparatus for obtaining plane section radiographs comprising: a. a support; b. a film carried by said support; c. a table carried by said support and adapted for longitudinal movement past said film; d. a column, means for pivotally mounting said column to said support, and an x-ray tube attached to the column at a point displaced from the pivot; e. means for coupling said table to said column in an area of the column between the pivot and the x-ray tube and at a predetermined elevation with respect to the table, whereby longitudinal movement of the table moves the x-ray tube through an arc; and f. means for locking the column in one position, said locking means comprising: i. a plate rigidly attached to said support, said plate having an opening therein; and ii. a locking member mounted on said column and adapted for movement into and out of said opening, whereby the column is locked in one position when said locking member is in said opening.
Claim 10
Dependent Claim
31 words
Apparatus according to claim 6 wherein the locking member comprises a bar mounted for reciprocating movement along a plurality of rods mounted on the column at an angle to said plate.
Claim 11
Dependent Claim
58 words
Apparatus according to claim 7 wherein at least one of said rods passes through an elongated slot in said bar and another one of said rods passes through an eccentric mounted in said bar and adapted for rotation therein, whereby the position in which the column is locked may be adjusted by rotating the eccentric in the bar.
Claim 12
Dependent Claim
168 words
A tomographic attachment for an x-ray table assembly having a support, a film cabinet carried by the support, and a table carried by the support and adapted for longitudinal movement past the film cabinet, said attachment comprising; a. a column, a channel attached to the column, means for pivotally mounting the column to said support, and means for attaching an x-ray tube to said column at a point displaced from said pivotal mounting means; and b. a plane selector adapted for attachment to said table, said plane selector having vertically adjustable means for engaging the column in an area of the column between said pivotal mounting means and said x-ray tube comprising a veRtically adjustable bushing and a pin mounted within said bushing for reciprocation into and out of said channel, whereby longitudinal movement of the table moves the x-ray tube through an arc when the pin is in the channel and the table and column may be moved independently when the pin is withdrawn from the channel.
Claim 13
Dependent Claim
168 words
A tomographic attachment for an x-ray table assembly having a support, a film cabinet carried by the support, and a table carried by the support and adapted for longitudinal movement past the film cabinet, said attachment comprising; a. a column, a channel attached to the column, means for pivotally mounting the column to said support, and means for attaching an x-ray tube to said column at a point displaced from said pivotal mounting means; and b. a plane selector adapted for attachment to said table, said plane selector having vertically adjustable means for engaging the column in an area of the column between said pivotal mounting means and said x-ray tube comprising a veRtically adjustable bushing and a pin mounted within said bushing for reciprocation into and out of said channel, whereby longitudinal movement of the table moves the x-ray tube through an arc when the pin is in the channel and the table and column may be moved independently when the pin is withdrawn from the channel.
Claim 14
Dependent Claim
172 words
A tomographic attachment for an x-ray table assembly having a support, a film cabinet carried by the support, and a table carried by the support and adapted for longitudinal movement past the film cabinet, said attachment comprising: a. a column; b. means for pivotally mounting the column to said support comprising: i. a plate adapted to be rigidly attached to said support, said plate having an opening therein; and ii. a locking member mounted on said column and adapted for movement into and out of said opening, whereby said column is locked in one position when said locking member is in said opening; c. means for attaching an x-ray tube to said column at a point displaced from said pivotal mounting means; and d. a plane selector adapted for attachment to said table, said plane selector having vertically adjustable means for engaging the column in an area of the column between said pivotal mounting means and said x-ray tube, whereby longitudinal movement of the table moves the x-ray tube through an arc.
Claim 15
Dependent Claim
172 words
A tomographic attachment for an x-ray table assembly having a support, a film cabinet carried by the support, and a table carried by the support and adapted for longitudinal movement past the film cabinet, said attachment comprising: a. a column; b. means for pivotally mounting the column to said support comprising: i. a plate adapted to be rigidly attached to said support, said plate having an opening therein; and ii. a locking member mounted on said column and adapted for movement into and out of said opening, whereby said column is locked in one position when said locking member is in said opening; c. means for attaching an x-ray tube to said column at a point displaced from said pivotal mounting means; and d. a plane selector adapted for attachment to said table, said plane selector having vertically adjustable means for engaging the column in an area of the column between said pivotal mounting means and said x-ray tube, whereby longitudinal movement of the table moves the x-ray tube through an arc.
Claim 16
Dependent Claim
32 words
An attachment according to claim 10 wherein the locking member comprises a bar mounted for reciprocating movement along a plurality of rods mounted on the column at an angle to said plate.
Claim 17
Dependent Claim
59 words
An attachment according to claim 11 wherein at least one of said rods passes through an elongated slot in said bar and another one of said rods passes through an eccentric mounted in said bar and adapted for rotation therein, whereby the position in which the column is locked may be adjusted by rotating the eccentric in the bar.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |