US3776500A - X-ray apparatus having a telescopic columnar support - Google Patents
X-ray apparatus having a telescopic columnar support Download PDFInfo
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- US3776500A US3776500A US00163248A US3776500DA US3776500A US 3776500 A US3776500 A US 3776500A US 00163248 A US00163248 A US 00163248A US 3776500D A US3776500D A US 3776500DA US 3776500 A US3776500 A US 3776500A
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- 238000001125 extrusion Methods 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 230000036316 preload Effects 0.000 abstract description 9
- 230000008602 contraction Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
- A61B6/4464—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit or the detector unit being mounted to ceiling
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K5/00—Irradiation devices
- G21K5/10—Irradiation devices with provision for relative movement of beam source and object to be irradiated
Definitions
- the present invention relates generally to an X-ray apparatus having a telescope columnar support and more particularly to an X-ray apparatus having an improved columnar support with means for adjusting the pre-load normal force between the sections.
- Prior Art X-ray apparatus provided with telescoping supports of various types are well known. While telescoping sup ports are desirable due to their inherent strength and compact construction, most known telescopic supports present a number of problems when used in conjunction with X-ray equipment.
- the forces which X-ray apparatus imposes on telescopic supports are both large in magnitude and variable in direction depending upon the positioning of the apparatus.
- the X-ray tube housing, support, and associated counterweight mechanisms are inherently heavy, and impose lateral forces on the telescoping sections which vary in accordance with the position of the apparatus.
- the X-ray tube power cables which connect with the tube housing are also heavy, bulky, and serve to impose forces on the column that vary with position.
- the telescopic column provides a more rigid support to the X-ray apparatus than is provided if some of the sections remain fully retracted while others are fully extended.
- Still another problem commonly encountered with X-ray telescopic supports is the difficulty of adapting such supports to installations wherein substantially dif' ferent columnar lengths are required.
- the tooling used in the manufacture of many prior art telescopic support sections is not adjustable to provide sections of any desired length.
- the sections themselves frequently include specialized end formations which prevent their being simply cut off to provide shorter sec tions-Hence, with such sections the length of a column to be constructed is limited bythe range of lengths and diameters of sections available.
- the present invention overcomes the foregoing drawbacks of prior art X-ray apparatus supports, and provides an X-ray apparatus with an improved telescopic columnar support formed of extruded sections and having an adjuster and biasing pads between each of the sections to provide an adjustable pre-load normal force.
- a telescopic columnar support comprising concentrically positioned tubular sections nested one within another. All of the sections except the outermost section serve as nested sections while all of the sections except the innermost section serve as nesting sections.
- the nesting sections each have a plurality of ways formed on the interior thereof.
- the nested sections each carry a plurality of guide bearings on the exterior thereof. The guide bearings cooperate with the ways to permit extension of each of the nested sections relative to its nesting section.
- a biasing pad and an adjuster are associated with the guide bearings to provide an adjusted pre-load force between the nested and nesting sections and normal to the pattern of section travel.
- the pre-load normal force between the sections can be accurately controlled.
- the force required to telescopically extend and contract the various sections can thereby by equalized such that the sections will extend and contract together.
- such a provision both minimizes the development of play between the sections and provides a more rigid support for the X-ray apparatus.
- the nested sections are formed of extrusions.
- the ways comprise rods of circular cross section which are held in substantially semi-circular grooves formed internally of the extruded sections.
- the extruded sections may be formed of relatively soft and easily machined materials.
- the sections and the bearing rods may be cut to any desired length thereby providing a telescopic columnar support which is simple and inexpensive to manufacture in a wide range of lengths.
- FIG. 1 is a side view of the X-ray apparatus of the present invention with the telescopic columnar support partially extended, the view having portions thereof broken away to better illustrate details;
- FIG. 2 is an elevational view similar to FIG. I with the telescopic support in its contracted position;
- FIG. 3 is a sectional view as seen from the plane indicated by the line 33 in FIG. 2;
- FIG. 4 is a perspective view of a portion of the guide way arrangement carried on the interior of each of the nesting sections;
- FIG. 5 is an enlarged view partially in cross section of the guide bearing arrangement positioned between the nested and nesting sections as seen from the plane indicated by the line 5-5 in FIG. 3;
- FIG. 6 is a side view showing a portion of the guide bearing arrangement as seen from the plane indicated by the lines 66 in FIG. 5.
- an X-ray apparatus is shown generally at 8.
- the X-ray apparatus 8 includes an X-ray tube housing assembly 9 which is supported by a telescopic columnar support 10.
- the columnar support 10 comprises a plurality of concentrically positioned tubular sections 11, 12, 13, l4, l nested one within another, and movable between the extended position of FIG. 1 to the contracted position of FIG. 2.
- the outermost section 11 includes upper and lower apertured end plates 16, 17.
- the upper end plate 16 is secured to an overhead support 18.
- Intermediate the end plates 16, 17 are three elongate V-shaped members 19.
- the members 19 are secured to the end plates 16, 17 as be welding.
- Each of the sections comprises an extruded member of substantially triangular shape.
- the columnar support may be formed to extend to any one of a wide range of lengths by selecting the lengths to which the extruded sections are cut.
- Each of the sections except the innermost section serves to nest another one of the sections therein, and such sections will hereinafter be referred to as nesting" sections.
- Each of the sections except the outermost section 11 is nested within one of the sections, and such sections will hereinafter be referred to as nested sections.
- section 11 serves only as a nesting section
- section 15 serves only as a nested section
- sections 12, 13, 14 serve both as nested and nesting sections.
- the sections are all substantially triangular in cross section and are nested with the sides of the sections substantially parallel and the junctions of the sides substantially adjacent.
- Each of the nesting sections 1 l, 12, 13, 14, carries three ways 20 which extend along the interior thereof adjacent the junctures of the sides.
- Each of the nested sections 12, 13, 14, 15 carries three guide bearing structures 21 on the exterior thereof adjacent the junctures of the sides. The guide bearings 21 cooperate with the ways 20 to permit the relative extension and contraction of the sections without permitting relative rotation of the sections.
- the arrangement of one typical way 20 is shown in FIG. 4.
- the way comprises an elongate rod 22 of substantially circular cross section which is pressed into an elongate groove 23.
- the groove 23 comprises a greater than semi-circular segment of a circle whereby the rod 22 is held securely in position once pressed into the groove.
- the guide bearing structure comprises a pair of bearing assemblies 30, 31 each of which carries a grooved roller 32 adapted to engage the way 22.
- Each of the rollers 32 is carried intermediate the ends of a shaft 33 and are mounted on said shaft by means of ball bearings (not shown).
- the ends of the shaft 33 are joumaled in a double yoke assembly comprising an inner yoke 34 and an outer yoke 35, as best seen in FIG. 6.
- the outer yoke has inclined slots 36 which receive the ends of the shaft 33.
- the slots 36 enable the inner yoke and the roller 32 to move relative to the outer yoke.
- the inclination of the slots causes a simultaneous transverse movement of the roller.
- a set screw 37 serves to hold the inner yoke 34 at a constant relative position to the outer yoke 35.
- the inward movement of the set screw 37 in the direction of arrow 40 will cause the inner yoke 34 and the roller 33 to move inwardly a correspondingly similar distance.
- the roller 32 is caused to move in the direction of arrow 41 into engagement with the rod 22.
- An adjuster is thereby provided to adjust the preload normal force between adjacent sections.
- Resilient biasing pads 42 positioned between the outer yoke 35 and the section on which it is mounted serve to bias the pre-load roller into engagement with the way 22.
- the described adjustment means provides a highly accurate mechanism for controlling the preload force between the sections.
- the sections may be so adjusted as to assure their telescopic extension and contraction with equal force.
- an improved telescopic column connecting the mechanism to the support comprising:
- each roller for independent adjustment on said tubular section relative to its respective guide bar, said means including a locating surface fixed relative to the section, a shaft rotatably supporting the roller, and an adjustable member positioning said shaft relative to the locating surface to locate the roller firmly against the guide bar.
- each of said sections except the outermost section comprises a metal extrusion of substantially triangular configuration.
- each guide bar is a rod of circular cross section.
- roller mounting means includes a cam surface for urging the roller shaft toward the associated guide bar in response to adjustment of the roller shaft in a direction along the guide bar and an adjustment screw for moving the roller shaft along the guide bar.
- an improved telescopic column connecting the mechanism to the support comprising:
- rollers carried by each of said sections externally thereof, at least two rollers running along each guide bar to locate and stabilize the position of said tubular sections one to the other;
- each roller means for adjusting the position of each roller relative to its tubular section, including a locating surface for each roller fixed relative to the section, a shaft rotatably supporting the roller, and an adjustable member positioning said shaft relative to the locating surface to locate the roller firmly against a guide bar.
- tubular sections each have wall portions angularly related in triangular form.
- an improved telescopic column connecting the mechanism to the support comprising:
- rollers carried by each of said sections on the other of said inside and outside surfaces of the sections in rolling contact with an adjacent bar;
- each roller means for adjusting the position of each roller relative to its tubular section, including a locating surface for each roller fixed relative to the section, a shaft rotatably supporting the roller, and an adjustable member positioning said shaft relative to the locating surface to locate the roller firmly against a guide bar.
- tubular sections each have wall portions angularly related in triangular form.
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Abstract
An X-ray apparatus including a telescopic columnar support comprising concentrically positioned tubular sections nested one within another. Each of the sections, except the innermost section, has a plurality of ways extending along its interior. Each of the sections, except the outermost section comprises a metallic extrusion which carries a plurality of guide bearings on its exterior to cooperate with the ways. An adjustment means is associated with each of the guide bearings whereby the pre-load normal force between the nested and nesting sections may be adjusted.
Description
Q Umted States Patent 1 '[111 3,776,500
Foderaro 1 Dec. 4, 1973 [54] X-RAY APPARATUS HAVING A 3,587,886 6/1971 Gano 212/55 R TELESCOPIC COLUMNAR SUPPORT FOREIGN PATENTS OR APPLICATIONS [75] Mum"! mien", Middleburg 1,009,373 5/1957 Germany 212/55 Heights, Ohio 212,747 4/1968 U.s.s.R............ 248/333 Assigneez Picker Corporation Cleveland, 467,968 3/1969 Switzerland 248/55 Ohio Primary Examiner-Marion Parsons, Jr. [221 Fded- J 1971 Attorney-Watts, l-lofi'rann, Fisher & Heinke [21] Appl. No.: 163,248
57 ABSTRACT [52] US. Cl. 248/333 An Xray apparatus including a telescopic columnar lI-lt. pp comprising concentrically positioned tubular 581 Field of Search 248/333, 55, 336, sections nested one within moth Each of the 5% 4 212/55: 308/6 6 tions, except the innermost section, has a plurality of 287/58 CT ways extending along its interior. Each of the sections, I except the outermost section comprises a metallic ex- [56] References cued trusion which carries a plurality of guide bearings on UNIT D STATES PATENTS its exterior to cooperate with the ways. An adjustment 2,103,811 12 1937 Davis 248755 means is associated with each of the guide bearings 2,684,159 7/1954 Oldenkamp 2l2/55 whereby the pre-load normal force between the nested R24,982 5/1961 Schiring et a1... 248/333 and nesting sections may be adjusted. 3,082,881 3/1963 Wieger 212/55 5/1967 Gemhardt 212 55 10 Claims, 6 Drawing Figures Pmmznnec 41% 3,776,500
SHEET 1 BF 2 INVENTOR.
w ffims ATTORNEYS ANTHONY J.FODERARO PATENTEDHEC 4191s saw 2 ur 2 INVENTOR. ANTHONY J. FODERARO ATTORNEYS 1 'X-RAY APPARATUS HAVING-A TELESCOPIC COLUMNAR SUPPORT BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to an X-ray apparatus having a telescope columnar support and more particularly to an X-ray apparatus having an improved columnar support with means for adjusting the pre-load normal force between the sections.
2. Prior Art X-ray apparatus provided with telescoping supports of various types are well known. While telescoping sup ports are desirable due to their inherent strength and compact construction, most known telescopic supports present a number of problems when used in conjunction with X-ray equipment.
The forces which X-ray apparatus imposes on telescopic supports are both large in magnitude and variable in direction depending upon the positioning of the apparatus. The X-ray tube housing, support, and associated counterweight mechanisms are inherently heavy, and impose lateral forces on the telescoping sections which vary in accordance with the position of the apparatus. The X-ray tube power cables which connect with the tube housing are also heavy, bulky, and serve to impose forces on the column that vary with position.
It is desirable that the various sections telescopically extend equally and concurrently for a number of reasons. First, when the sections extend together, such lateral forces as may be imposed on the columnar support are distributed equally on the bearing surfaces between adjacent sections. Hence, the forces are not concentrated on those sections which are extended relative to each other more than other sections. This preserves bearing surface life and decreases the development of play between the sections.
Second, if the sections extend concurrently and tus, as can occur where the support is disposed verti-,
cally. Third, if the sections extend substantially equally, the telescopic column provides a more rigid support to the X-ray apparatus than is provided if some of the sections remain fully retracted while others are fully extended.
Still another problem commonly encountered with X-ray telescopic supports is the difficulty of adapting such supports to installations wherein substantially dif' ferent columnar lengths are required. The tooling used in the manufacture of many prior art telescopic support sections is not adjustable to provide sections of any desired length. Moreover, the sections themselves frequently include specialized end formations which prevent their being simply cut off to provide shorter sec tions-Hence, with such sections the length of a column to be constructed is limited bythe range of lengths and diameters of sections available.
SUMMARY OF THE INVENTION The present invention overcomes the foregoing drawbacks of prior art X-ray apparatus supports, and provides an X-ray apparatus with an improved telescopic columnar support formed of extruded sections and having an adjuster and biasing pads between each of the sections to provide an adjustable pre-load normal force.
In accordance with one aspect of the present invention, a telescopic columnar support is provided comprising concentrically positioned tubular sections nested one within another. All of the sections except the outermost section serve as nested sections while all of the sections except the innermost section serve as nesting sections. The nesting sections each have a plurality of ways formed on the interior thereof. The nested sections each carry a plurality of guide bearings on the exterior thereof. The guide bearings cooperate with the ways to permit extension of each of the nested sections relative to its nesting section. A biasing pad and an adjuster are associated with the guide bearings to provide an adjusted pre-load force between the nested and nesting sections and normal to the pattern of section travel.
By the provision of the biasing pad and adjuster between the sections, the pre-load normal force between the sections can be accurately controlled. The force required to telescopically extend and contract the various sections can thereby by equalized such that the sections will extend and contract together. As previously mentioned, such a provision both minimizes the development of play between the sections and provides a more rigid support for the X-ray apparatus.
In accordance with another feature of the present invention, the nested sections are formed of extrusions. The ways comprise rods of circular cross section which are held in substantially semi-circular grooves formed internally of the extruded sections. By this arrangement, the extruded sections may be formed of relatively soft and easily machined materials. In addition the sections and the bearing rods may be cut to any desired length thereby providing a telescopic columnar support which is simple and inexpensive to manufacture in a wide range of lengths.
Accordingly, it is the principal object of the present invention to provide an X-ray apparatus with a novel and improved telescopic columnar support.
Other objects and a fuller understanding of the invention may be had by referring to the following description and claims taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of the X-ray apparatus of the present invention with the telescopic columnar support partially extended, the view having portions thereof broken away to better illustrate details;
FIG. 2 is an elevational view similar to FIG. I with the telescopic support in its contracted position;
FIG. 3 is a sectional view as seen from the plane indicated by the line 33 in FIG. 2;
FIG. 4 is a perspective view of a portion of the guide way arrangement carried on the interior of each of the nesting sections;
FIG. 5 is an enlarged view partially in cross section of the guide bearing arrangement positioned between the nested and nesting sections as seen from the plane indicated by the line 5-5 in FIG. 3; and
FIG. 6 is a side view showing a portion of the guide bearing arrangement as seen from the plane indicated by the lines 66 in FIG. 5.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to FIG. 1, an X-ray apparatus is shown generally at 8. The X-ray apparatus 8 includes an X-ray tube housing assembly 9 which is supported by a telescopic columnar support 10.
The columnar support 10 comprises a plurality of concentrically positioned tubular sections 11, 12, 13, l4, l nested one within another, and movable between the extended position of FIG. 1 to the contracted position of FIG. 2.
The outermost section 11 includes upper and lower apertured end plates 16, 17. The upper end plate 16 is secured to an overhead support 18. Intermediate the end plates 16, 17 are three elongate V-shaped members 19. The members 19 are secured to the end plates 16, 17 as be welding.
Each of the sections, with the exception of the outermost section 11, comprises an extruded member of substantially triangular shape. The columnar support may be formed to extend to any one of a wide range of lengths by selecting the lengths to which the extruded sections are cut.
Each of the sections except the innermost section serves to nest another one of the sections therein, and such sections will hereinafter be referred to as nesting" sections. Each of the sections except the outermost section 11 is nested within one of the sections, and such sections will hereinafter be referred to as nested sections. As such, section 11 serves only as a nesting section, section 15 serves only as a nested section, and sections 12, 13, 14 serve both as nested and nesting sections.
As seen in FIG. 3, the sections are all substantially triangular in cross section and are nested with the sides of the sections substantially parallel and the junctions of the sides substantially adjacent. Each of the nesting sections 1 l, 12, 13, 14, carries three ways 20 which extend along the interior thereof adjacent the junctures of the sides. Each of the nested sections 12, 13, 14, 15 carries three guide bearing structures 21 on the exterior thereof adjacent the junctures of the sides. The guide bearings 21 cooperate with the ways 20 to permit the relative extension and contraction of the sections without permitting relative rotation of the sections.
The arrangement of one typical way 20 is shown in FIG. 4. The way comprises an elongate rod 22 of substantially circular cross section which is pressed into an elongate groove 23. The groove 23 comprises a greater than semi-circular segment of a circle whereby the rod 22 is held securely in position once pressed into the groove.
The arrangement of one typical guide bearing structure 21 is shown in FIG. 5. The guide bearing structure comprises a pair of bearing assemblies 30, 31 each of which carries a grooved roller 32 adapted to engage the way 22. Each of the rollers 32 is carried intermediate the ends of a shaft 33 and are mounted on said shaft by means of ball bearings (not shown). The ends of the shaft 33 are joumaled in a double yoke assembly comprising an inner yoke 34 and an outer yoke 35, as best seen in FIG. 6. The outer yoke has inclined slots 36 which receive the ends of the shaft 33.
The slots 36 enable the inner yoke and the roller 32 to move relative to the outer yoke. The inclination of the slots causes a simultaneous transverse movement of the roller. A set screw 37 serves to hold the inner yoke 34 at a constant relative position to the outer yoke 35. As is best seen in FIG. 5, the inward movement of the set screw 37 in the direction of arrow 40 will cause the inner yoke 34 and the roller 33 to move inwardly a correspondingly similar distance. Simultaneously, the roller 32 is caused to move in the direction of arrow 41 into engagement with the rod 22. An adjuster is thereby provided to adjust the preload normal force between adjacent sections. Resilient biasing pads 42 positioned between the outer yoke 35 and the section on which it is mounted serve to bias the pre-load roller into engagement with the way 22.
As will be apparent, the described adjustment means provides a highly accurate mechanism for controlling the preload force between the sections. By this provision, the sections may be so adjusted as to assure their telescopic extension and contraction with equal force.
Although the foregoing description is necessarily of a detailed character, in order that the invention may be set forth, it is to be understood that the specific terminolgy is not intended to be restrictive or confining, and that various rearrangements of parts and modifications of detail may be resorted to without departing from the scope or spirit of the invention as herein claimed.
What is claimed is:
1. In an X-ray apparatus including a support and a mechanism for contributing to the production of an X-ray image, an improved telescopic column connecting the mechanism to the support comprising:
a plurality of tubular sections telescoped together in nested relationship;
three parallel roller guide bars spaced in triangular arrangement, carried on the inner surface of each tubular section other than the innermost section;
a plurality of rollers carried on the outer surface of each tubular section, other than the outermost section, riding along each guide bar, and
means mounting each roller for independent adjustment on said tubular section relative to its respective guide bar, said means including a locating surface fixed relative to the section, a shaft rotatably supporting the roller, and an adjustable member positioning said shaft relative to the locating surface to locate the roller firmly against the guide bar.
2. The apparatus of claim 1 wherein each of said sections except the outermost section comprises a metal extrusion of substantially triangular configuration.
3. The apparatus of claim 1 wherein each guide bar is a rod of circular cross section.
4. The apparatus of claim 3 wherein said guide bearings comprise grooved rollers adapted to engage said rods.
5. The apparatus of claim 1 wherein said roller mounting means includes a cam surface for urging the roller shaft toward the associated guide bar in response to adjustment of the roller shaft in a direction along the guide bar and an adjustment screw for moving the roller shaft along the guide bar.
6. In an X-ray apparatus including a support and a mechanism for contributing to the production of an X-ray image, an improved telescopic column connecting the mechanism to the support comprising:
a plurality of tubular extruded sections of relatively easily machined material telescoped together in nested relationship, said sections having three substantially equally spaced parallel portions extending longitudinally of the sections for supporting guide bars;
three parallel guide bars extending the length of each of said sections and secured thereto within the tubular sections along the spaced parallel portions;
at least six rollers carried by each of said sections externally thereof, at least two rollers running along each guide bar to locate and stabilize the position of said tubular sections one to the other; and
means for adjusting the position of each roller relative to its tubular section, including a locating surface for each roller fixed relative to the section, a shaft rotatably supporting the roller, and an adjustable member positioning said shaft relative to the locating surface to locate the roller firmly against a guide bar.
7. The apparatus of claim 6 wherein said tubular sections each have wall portions angularly related in triangular form.
8. The apparatus of claim 7 wherein said wall portions intersect to form apices and said guide bars are located at the apices.
9. In an X-ray apparatus including a support and a mechanism for contributing to the production of an X-ray image, an improved telescopic column connecting the mechanism to the support comprising:
a plurality of tubular extruded sections of relatively easily machined material telescoped together in nested relationship, said sections having three spaced parallel portions extending longitudinally of the sections for supporting guide bars;
three parallel guide bars extending along the length of each of said sections and secured thereto along the spaced parallel portions on only one of the inside and outside surfaces of the sections;
rollers carried by each of said sections on the other of said inside and outside surfaces of the sections in rolling contact with an adjacent bar; and
means for adjusting the position of each roller relative to its tubular section, including a locating surface for each roller fixed relative to the section, a shaft rotatably supporting the roller, and an adjustable member positioning said shaft relative to the locating surface to locate the roller firmly against a guide bar.
10. The apparatus of claim 9 wherein said tubular sections each have wall portions angularly related in triangular form.
Claims (10)
1. In an X-ray apparatus including a support and a mechanism for contributing to the production of an X-ray image, an improved telescopic column connecting the mechanism to the support comprising: a plurality of tubular sections telescoped together in nested relationship; three parallel roller guide bars spaced in triangular arrangement, carried on the inner surface of each tubular section other than the innermost section; a plurality of rollers carried on the outer surface of each tubular section, other than the outermost section, riding along each guide bar, and means mounting each roller for independent adjustment on said tubular section relative to its respective guide bar, said means including a locating surface fixed relative to the section, a shaft rotatably supporting the roller, and an adjustable member positioning said shaft relative to the locating surface to locate the roller firmly against the guide bar.
2. The apparatus of claim 1 wherein each of said sections except the outermost section comprises a metal extrusion of substantially triangular configuration.
3. The apparatus of claim 1 wherein each guide bar is a rod of circular cross section.
4. The apparatus of claim 3 wherein said guide bearings comprise grooved rollers adapted to engage said rods.
5. The apparatus of claim 1 wherein said roller mounting means includes a cam surface for urging the roller shaft toward the associated guide bar in response to adjustment of the roller shaft in a direction along the guide bar and an adjustment screw for moving the roller shaft along the guide bar.
6. In an X-ray apparatus including a support and a mechanism for contributing to the production of an X-ray image, an improved telescopic column connecting the mechanism to the support comprising: a plurality of tubular extruded sections of relatively easily machined material telescoped together in nested relationship, said sections having three substantially equally spaced parallel portions extending longitudinally of the sections for supporting guide bars; three parallel guide bars extending the length of each of said sections and secured thereto within the tubular sections along the spaced parallel portions; at least six rollers carried by each of said sections externally thereof, at least two rollers running along each guide bar to locate and stabilize the position of said tubular sections one to the other; and means for adjusting the position of each roller relative to its tubular section, including a locating surface for each roller fixed relative to the section, a shaft rotatably supporting the roller, and an adjustable member positioning said shaft relative to the locating surface to locate the roller firmly against a guide bar.
7. The apparatus of claim 6 wherein said tubular sections each have wall portions angularly related in triangular form.
8. The apparatus of claim 7 wherein said wall portions intersect to form apices and said guide bars are located at the apices.
9. In an X-ray apparatus including a support and a mechanism for contributing to the production of an X-ray image, an improved telescopic column connecting the mechanism to the support comprising: a plurality of tubular extruded sections of relatively easily machined material telescoped together in nested relationship, said sections having three spaced parallel portions extending longitudinally of the sections for supporting guide bars; three parallel guide bars extending along the length of each of said sections and secured thereto along the spaced parallel portions on only one of the inside and outside surfaces of the sections; rollers carried by each of said sections on the other of said inside and outside surfaces of the sections in rolling contact with an adjacent bar; and means for adjusting the position of each roller relative to its tubular section, including a locating surface for each roller fixed relative to the section, a shaft rotatably supporting the roller, and an adjustable member positioning said shaft relative to the locating surface to locate the roller firmly against a guide bar.
10. The apparatus of claim 9 wherein said tubular sections each have wall portions angularly related in triangular form.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US16324871A | 1971-07-16 | 1971-07-16 |
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US3776500A true US3776500A (en) | 1973-12-04 |
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US00163248A Expired - Lifetime US3776500A (en) | 1971-07-16 | 1971-07-16 | X-ray apparatus having a telescopic columnar support |
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Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3860350A (en) * | 1973-06-15 | 1975-01-14 | Gerald L Rogers | Extensible arm structure |
US3887155A (en) * | 1972-12-07 | 1975-06-03 | Philips Corp | Telescoping support mechanism |
US3986697A (en) * | 1973-11-21 | 1976-10-19 | Picker Corporation | Telescopic column for x-ray apparatus |
USD244805S (en) * | 1974-11-25 | 1977-06-21 | Ao:S Metall & Mek. Verkstad Ab | X-ray unit stand |
US4057891A (en) * | 1973-11-21 | 1977-11-15 | Picker Corporation | Telescopic column for X-ray apparatus |
EP0037928A1 (en) * | 1980-04-01 | 1981-10-21 | Siemens Aktiengesellschaft | Electron applicator for a linear accelerator |
EP0068930A2 (en) * | 1981-06-10 | 1983-01-05 | Thomson-Csf | Telescopic tube unit |
EP0103742A1 (en) * | 1982-09-22 | 1984-03-28 | General Electric Company | Angulating lateral fluoroscopic suspension |
DE3315825A1 (en) * | 1983-04-30 | 1984-10-31 | Fa. Alfred Herbert Ziller, 4230 Wesel | Telescopic guide |
US4901967A (en) * | 1986-07-15 | 1990-02-20 | The Cleveland Clinic Foundation | Patient equipment transport and support system |
US5026017A (en) * | 1989-05-24 | 1991-06-25 | F.M.K. Kruezer Gmbh & Co. | Appliance carrier |
US5240218A (en) * | 1991-10-23 | 1993-08-31 | Loma Linda University Medical Center | Retractable support assembly |
DE10019576A1 (en) * | 2000-04-20 | 2001-10-31 | Hans Pausch Roentgengeraetebau | Telescope has guide rails on interior surface of outer tube, sets of rollers on bearer plate forming guide elements with bearer plates rotatably mounted on outside of inner tube |
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US20060071138A1 (en) * | 2002-11-14 | 2006-04-06 | Hans Pausch Gmbh & Co. | Ceiling support for a medico-technical radiation source |
US20080121150A1 (en) * | 2006-11-14 | 2008-05-29 | Unifor S.P.A | Telescopic table support |
US20080252045A1 (en) * | 2007-04-11 | 2008-10-16 | Rossini Alfred P | Single-Post, Height Adjustable Cart |
US20110240817A1 (en) * | 2010-03-30 | 2011-10-06 | Korea Atomic Energy Research Institute | Telescopic tube set for bridge transport system |
US20110248144A1 (en) * | 2010-04-09 | 2011-10-13 | Kuo-Su Lee | Lifting-adjusting assembly for a shaft |
US20120207281A1 (en) * | 2011-02-14 | 2012-08-16 | Shinyoung For M Co., Ltd. | Post frame for x-ray apparatus and ceiling type x-ray apparatus with the same |
CN104835548A (en) * | 2015-03-18 | 2015-08-12 | 北京控制工程研究所 | Paraboloid type grazing incidence optical lens used for focusing of soft X rays |
EP2893198A4 (en) * | 2012-09-06 | 2016-03-02 | Falck Schmidt Defence Systems As | A telescopic mast |
US20180135794A1 (en) * | 2018-01-15 | 2018-05-17 | Hamaye Co | Extendable cage telescopic system |
US10723607B2 (en) * | 2017-03-24 | 2020-07-28 | Big Lift, Llc | Electric personnel lift device |
EP3824813A1 (en) | 2019-11-20 | 2021-05-26 | Agfa Nv | Rolling element assembly for adjustment of telescopic arm |
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Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
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US3887155A (en) * | 1972-12-07 | 1975-06-03 | Philips Corp | Telescoping support mechanism |
US3860350A (en) * | 1973-06-15 | 1975-01-14 | Gerald L Rogers | Extensible arm structure |
US3986697A (en) * | 1973-11-21 | 1976-10-19 | Picker Corporation | Telescopic column for x-ray apparatus |
US4057891A (en) * | 1973-11-21 | 1977-11-15 | Picker Corporation | Telescopic column for X-ray apparatus |
USD244805S (en) * | 1974-11-25 | 1977-06-21 | Ao:S Metall & Mek. Verkstad Ab | X-ray unit stand |
EP0037928A1 (en) * | 1980-04-01 | 1981-10-21 | Siemens Aktiengesellschaft | Electron applicator for a linear accelerator |
EP0068930A2 (en) * | 1981-06-10 | 1983-01-05 | Thomson-Csf | Telescopic tube unit |
EP0068930A3 (en) * | 1981-06-10 | 1983-10-12 | Thomson-Csf | Telescopic tube unit |
EP0103742A1 (en) * | 1982-09-22 | 1984-03-28 | General Electric Company | Angulating lateral fluoroscopic suspension |
DE3315825A1 (en) * | 1983-04-30 | 1984-10-31 | Fa. Alfred Herbert Ziller, 4230 Wesel | Telescopic guide |
US4901967A (en) * | 1986-07-15 | 1990-02-20 | The Cleveland Clinic Foundation | Patient equipment transport and support system |
US5026017A (en) * | 1989-05-24 | 1991-06-25 | F.M.K. Kruezer Gmbh & Co. | Appliance carrier |
US5240218A (en) * | 1991-10-23 | 1993-08-31 | Loma Linda University Medical Center | Retractable support assembly |
DE10019576A1 (en) * | 2000-04-20 | 2001-10-31 | Hans Pausch Roentgengeraetebau | Telescope has guide rails on interior surface of outer tube, sets of rollers on bearer plate forming guide elements with bearer plates rotatably mounted on outside of inner tube |
EP1319760A1 (en) * | 2000-09-04 | 2003-06-18 | Komatsu Ltd. | Slide arm of working machine |
EP1319760A4 (en) * | 2000-09-04 | 2009-03-18 | Komatsu Mfg Co Ltd | Slide arm of working machine |
US6571970B1 (en) * | 2000-10-16 | 2003-06-03 | Rapistan Systems Advertising Corp. | Monorail telescopic carrier |
US20060071138A1 (en) * | 2002-11-14 | 2006-04-06 | Hans Pausch Gmbh & Co. | Ceiling support for a medico-technical radiation source |
US7448800B2 (en) * | 2002-11-14 | 2008-11-11 | Hans Pausch Gmbh & Co. | Ceiling support for a medico-technical radiation source |
US20080121150A1 (en) * | 2006-11-14 | 2008-05-29 | Unifor S.P.A | Telescopic table support |
US8011308B2 (en) * | 2006-11-14 | 2011-09-06 | Unifor S.P.A. | Telescopic table support |
US20080252045A1 (en) * | 2007-04-11 | 2008-10-16 | Rossini Alfred P | Single-Post, Height Adjustable Cart |
US8231096B2 (en) * | 2010-03-30 | 2012-07-31 | Korea Atomic Energy Research Institute | Telescopic tube set for bridge transport system |
US20110240817A1 (en) * | 2010-03-30 | 2011-10-06 | Korea Atomic Energy Research Institute | Telescopic tube set for bridge transport system |
US20110248144A1 (en) * | 2010-04-09 | 2011-10-13 | Kuo-Su Lee | Lifting-adjusting assembly for a shaft |
US8453990B2 (en) * | 2010-04-09 | 2013-06-04 | Kuo-Su Lee | Lifting adjusting assembly for a shaft |
US20120207281A1 (en) * | 2011-02-14 | 2012-08-16 | Shinyoung For M Co., Ltd. | Post frame for x-ray apparatus and ceiling type x-ray apparatus with the same |
US9072488B2 (en) * | 2011-02-14 | 2015-07-07 | Shinyoung For M Co., Ltd. | Post frame for X-ray apparatus and ceiling type X-ray apparatus with the same |
US9587411B2 (en) | 2012-09-06 | 2017-03-07 | Falck Schmidt Defence Systems A/S | Telescopic mast |
AU2013312094B2 (en) * | 2012-09-06 | 2017-03-16 | Drs Sustainment Systems, Inc. | A telescopic mast |
EP2893198A4 (en) * | 2012-09-06 | 2016-03-02 | Falck Schmidt Defence Systems As | A telescopic mast |
CN104835548B (en) * | 2015-03-18 | 2017-03-01 | 北京控制工程研究所 | A kind of parabolic shape grazing incidence optics camera lens for grenz ray focusing |
CN104835548A (en) * | 2015-03-18 | 2015-08-12 | 北京控制工程研究所 | Paraboloid type grazing incidence optical lens used for focusing of soft X rays |
US10723607B2 (en) * | 2017-03-24 | 2020-07-28 | Big Lift, Llc | Electric personnel lift device |
US20180135794A1 (en) * | 2018-01-15 | 2018-05-17 | Hamaye Co | Extendable cage telescopic system |
US10746349B2 (en) * | 2018-01-15 | 2020-08-18 | Hamaye Co | Extendable cage telescopic system |
US11143602B2 (en) * | 2018-08-06 | 2021-10-12 | Shimadzu Corporation | X-ray imaging apparatus |
EP3824813A1 (en) | 2019-11-20 | 2021-05-26 | Agfa Nv | Rolling element assembly for adjustment of telescopic arm |
WO2021099250A1 (en) | 2019-11-20 | 2021-05-27 | Agfa Nv | Rolling element assembly for adjustment of telescopic arm |
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