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Publication numberUS2692173 A
Publication typeGrant
Publication dateOct 19, 1954
Filing dateMay 17, 1952
Priority dateMay 17, 1952
Also published asDE1069822B
Publication numberUS 2692173 A, US 2692173A, US-A-2692173, US2692173 A, US2692173A
InventorsLowitzsch Kurt
Original AssigneePhilips Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Two-way tiltable x-ray table
US 2692173 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

Oct. 19, 1954 K. LOWITZSCH 2,692,173

TWO'WAY TILTABLE X-RAY TABLE Filed June 17, 1952 2 Sheets-Sheet l INVENTOR. KURTIOMZZSCH AGENI Patented Oct. 19, 1954 TWO-WAY TILTABLE. X-RAY TABLE Kurt Lcwitzsch, Yonkers, N. Y., assignor, by mesne assignments, to North American Philips Company, Inc., New York, N. Y., a corporation of Delaware Application May 17, 1952, Serial No. 288,390

6 Claims.

This invention relates to X-ray diagnostic tables. More particularly, the invention relates to tables for fluoroscopic examination and for making radiographs of the human body in prone, upright or intermediate positions.

X-ray diagnostic tables are often required not only to support a patient in either a prone or an upright position, but, for certain diagnoses, to be rotatable from one vertical position 180 to the opposite vertical position.

The present invention relates to a novel form of table structure which complies with the foregoing requirements. Briefiy, the table comprises rotatable means for rotating the frame structure about a single fixed pivot point and translating means for moving the frame structure relative to the pivot point while it is being rotated.

In a preferred embodiment, the table is constituted by a frame structure slideably mounted on a pair of oppositely disposed relatively large gear segments which are free to rotate about a fixed shaft. The frame structure is provided on its under side with a pair of oppositely disposed gear racks in engagement, respectively, with a pair of pinions which are free to rotate about the same shaft as the gear segments. As the gear segments are rotated by suitable driving means to cause the table structure to tilt about the common shaft, the pinions are simultaneously driven by the same driving means to cause the table structure to shift transversely to the shaft. Such an arrangement, besides being relatively cheap and simple to manufacture, has the following additional advantages. The table is capable of being easily rotated from one vertical position completely around a 180 arc to the opposite vertical position. Furthermore, the space beneath the table is completely free of any part of the mechanical apparatus necessary to rotate the table; consequently, the space may be utilized for an X-ray tube and its associated apparatus as is done in conventional tables of the same type. In addition, a relatively low, long table is obtainable since, in accordance With the invention, the table is laterally shifted while it is being rotated so that the table just clears the floor as it is rotated from a horizontal to a vertical position.

The invention will now be described with reference to the accompanying drawing in which:

Fig. 1 is a side view of a table in a horizontal position in accordance with the invention;

Fig. 2 is a view, in cross-section, along line 2-2 of Fig. 1;

Fig. 3 is a view similar to Fig. 1 of the table at a 45 position;

Fig. 4 is a view similar to Fig. 1 of the table in a vertical position.

Figs. 1 and 2 show one form of X-ray diagnostic table according to the invention comprising a pair of base members I supporting a frame structure 2 which carries a table top 3. The frame 2 is slideably supported and guided on opposite sides thereof by two pairs of bearings 5 which are aflixed, respectively, to opposite sides of a pair of relatively large gear segments 6. The gear segments 5 are rotatably mounted, respectively, on a pair of horizontally disposed shafts I which are aflixed, respectively, to the base members I.

A pair of downwardly facing gear racks 4 are provided on opposite sides of the bottom side of the frame 2. A pair of gears 8, in engagement, respectively, with each of the gear racks 4, are rotatably supported on the same shaft 1 on which the gear segments 6 are mounted. A pair of sprockets 9 having diameters equal to or smaller than those of the gears 9 are secured, respectively, to each of the gears 8 for rotation therewith and are also rotatably mounted on the shafts "l'. A single motor I0 is operatively connected to both the gears 8 and the gear segments 6 by means of a pair of pinions H and a pair of sprockets 12 which are keyed, respectively, on the drive shaft of the motor Ill. The pinions I l are directly in engagement with the gear segments 6 and the sprockets l2 drive the sprockets 9 and the gears 8 through chain drives 13.

Tilting of the table top 3 is obtained in the following manner: Rotation of the gear segments 6 causes the table top 3 to pivot about the shafts T. In order to prevent the edge of the table from striking the floor, the frame 2 must be shifted in a direction opposite to the direction in which it is being tilted. This is accomplished by rotating the gears B in the proper direction to slide the frame 2 along the bearings 5. Both motions are performed simultaneously.

Fig. 3 shows the table after it has been tilted about 45 to the right from the horizontal position shown in Fig. 1. In this case, the motor [0 was driven in a counterclockwise direction causing the pinions II and the sprockets l2 to rotate also in a counterclockwise direction. The rotation of the pinions It causes the gear segments 6 to be rotated in a clockwise direction tilting the table toward the right side. Simultaneously, the rotation of the sprockets l2 rotates the sprockets 9 and the gears 8 in a counterclockwise direction which causes the racks 4 and the frame 2 to which they are secured to shift transversely to the shaft 1 to the left in 3 order that the right end of the frame 2 does no strike the floor.

Fig. 4 shows the table of Fig. 3 in a vertical position after complete tilting to the right. It can be noted that the frame 2 Was shifted transversely to the shafts i so that the edge of the frame just clears the floor. This, of course, can be easily arranged by suitable choice of the diameter of the gears 8 and the number of teeth. The opposite direction of tilting is obtained by reversing the direction of rotation of the motor.

To obtain a predetermined rate of tilting, a conventional transmission system (not shown) may be arranged between the motor [9 and the sprockets l2 and gears II. This transmission system is preferably constituted by a self-locking gear reduction drive in order that the weight of the table will not cause undesirable rotation of the motor.

While I have thus described my invention with specific examples and embodiments thereof, other modifications will be readily apparent to those skilled in the art without departing from the spirit and the scope of the invention as defined in the appended claims.

What is claimed is:

l. A two-Way tiltable X-ray table comprising a base, a frame structure carried by said base, a table top supported by said frame structure, means for rotating said frame structure about a single stationary axis on said base from one vertical position of said table top to the opposite vertical position, and means coacting with said rotating means to simultaneously effect translation of said frame structure relative to said stationary axis to enable said table top to clear the floor.

2. A two-way tiltable X-ray table comprising a base, a frame structure, a supporting member rotatably mounted on said base and slideably supporting said frame structure, a table top supported by said frame structure, means for rotating said supporting member about a single stationary axis on said base from one vertical position of said table top to the opposite vertical position, and means coacting with said rotating means to simultaneously effect translation of said frame structure relative to said stationary axis to enable said table top to clear the floor.

3. A two-way tiltable X-ray table comprising a base, a frame structure, a vertically-disposed supporting member rotatably mounted on said base for rotation in a vertical plane and slideably supporting said frame structure, a table top supported by said frame structure, means for rotating said supporting member about a single stationary axis on said base from one vertical position of said table top to the opposite vertical position, and means coacting with said rotating means to simultaneously effect translation of said frame structure relative to said stationary axis to enable said table top to clear the floor.

4. A two-way tiltable X-ray table comprising a base, a frame structure, a supporting member rotatably mounted on said base for rotation in a vertical plane and slideably supporting said frame structure, a table top supported by said frame structure, a source of power, means operatively connected to said source for rotating said supporting member about a single stationary axis on said base from one vertical position of the table top to the opposite vertical position, and means operatively connected to said source to simultaneously effect translation of said frame structure relative to said stationary axis to enable said table top to clear the floor.

5. A two-way tiltable X-ray table comprising a base, a frame structure, a vertically disposed gear segment rotatably mounted on said base and slideably supporting said frame structure, a table top supported by said frame structure, a gear rack mounted on said frame structure, means for rotating said gear segment about a single stationary axis on said base from one vertical position of the table top to the opposite vertical position, and means operatively connected to said gear rack and coacting with said rotating means to simultaneously effect translation of said frame structure relative to said stationary axis to enable said table top to clear the floor.

6. A two-way tiltable X-ray table comprising a base, a frame structure, a shaft fixedly secured in said base, a gear segment rotatably mounted on said shaft and slideably supporting said frame structure, a table top supported by said frame structure, a gear rack affixed to said frame structure, a pinion rotatably mounted on said shaft and in engagement with said rack, driving means for rotating said gear segment about said fixed shaft in one direction from one vertical position of the table top to the opposite vertical position and for simultaneously rotating said pinion in the opposite direction to effect translation of said frame structure relative to said fixed shaft to enable said table top to clear the floor.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 953,719 Skripec Apr. 5, 1910 2,103,693 Pohl Dec. 28, 1937 2,120,732 Camper et al. June 14, 1938 2,222,888 Haupt NOV. 26, 1940 2,534,623 Pitts et al. Dec. 19, 1950 2,568,236 Kizaur Sept. 18, 1951 FOREIGN PATENTS Number Country Date 282,280 Germany Feb. 22, 1915

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US953719 *Dec 21, 1908Apr 5, 1910John P SkripecDrawing-table.
US2103693 *Oct 5, 1934Dec 28, 1937Ernst PohlRadiographic couch
US2120732 *Feb 3, 1936Jun 14, 1938Hospital Appliances IncObstetrical or similar bed
US2222888 *Mar 15, 1939Nov 26, 1940Kelley Koett Mfg Company IncTwo way chi-ray tilt table
US2534623 *Aug 12, 1946Dec 19, 1950Kelley Koett Mfg CompanyVertically and tiltably movable x-ray table
US2568236 *Jan 26, 1948Sep 18, 1951Gen ElectricTilting cantilever table top structure
DE282240C *Aug 22, 1913Feb 19, 1915 Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2726910 *Nov 23, 1954Dec 13, 1955Westinghouse Electric CorpSingle pivot x-ray table
US2771330 *Jul 6, 1954Nov 20, 1956Smit Rontgen N VTilting mechanism for x-ray examination table
US2799542 *Jan 7, 1955Jul 16, 1957Continental X Ray CorpTilt table for X-ray techniques
US2816806 *Oct 31, 1955Dec 17, 1957Smit Routgen N VTilting mechanism for x-ray examination table
US2854302 *Aug 6, 1953Sep 30, 1958Keleket X Ray CorpDouble tilt x-ray table
US2881038 *May 29, 1952Apr 7, 1959Josef GernethApparatus for the diagnosis of patients by means of x-rays
US3031084 *Feb 17, 1961Apr 24, 1962Mugler Charles MFolding table carrier
US3069543 *Oct 10, 1960Dec 18, 1962Chirana PrahaTiltable wall or table as used in x-ray examinations
US3086115 *Apr 4, 1960Apr 16, 1963Sutherland Gordon OTiltable chi-ray table structure
US3096976 *Nov 3, 1961Jul 9, 1963Westinghouse Electric CorpChi-ray apparatus
US3158742 *Oct 20, 1961Nov 24, 1964Lab For Electronies IncX-ray table movable in two mutually perpendicular directions with a retractable radiation shield
US3306605 *May 12, 1965Feb 28, 1967Westinghouse Electric CorpX-ray apparatus
US4552347 *Nov 28, 1983Nov 12, 1985U.S. Philips CorporationX-Ray apparatus comprising a table-top which is displaceable in the longitudinal direction
US4618133 *Dec 28, 1984Oct 21, 1986Fischer Imaging CorporationTable positioner for radiographic device
US4731889 *Feb 26, 1986Mar 22, 1988Kabushiki Kaisha ToshibaSafety latch for a tilting bed
US5475885 *Oct 22, 1993Dec 19, 1995Kabushiki Kaisha ToshibaCouch system for x-ray diagnosis
US5499584 *Dec 7, 1994Mar 19, 1996Taylor; Michael J.Retractable adjustable shelf apparatus
US6502260 *Dec 1, 2000Jan 7, 2003Andre ViljoenTherapeutic bed
US7841030 *Nov 30, 2010General Electric CompanyPositioning systems and methods
US20090293196 *May 28, 2008Dec 3, 2009General Electric CompanyPositioning systems and methods
EP0125713A2 *Apr 12, 1984Nov 21, 1984Philips Patentverwaltung GmbHX-ray apparatus tiltable on a horizontal axis
Classifications
U.S. Classification5/601, 5/610, 108/24, 378/209, 108/2
International ClassificationA61B6/04
Cooperative ClassificationA61B6/04, A61B6/0457
European ClassificationA61B6/04C, A61B6/04