close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3094626

код для вставки
June 18, 1963
A. PALERMO, JR., ‘ETA'L
3,094,616
X-RAY ‘TABLE WITH TIL-TED TUBE
Filed Feb. 10. 1961
2 Sheets-Sheet 1
INVENTORS
EDWARD B. GRAVES
;BYANTHONY PALERMOJR.
mm ,1? Attys.
Mm
June 18, 1963v
A: PALERMO, JR., ETAL
3,094,616
X-RAY TABLE WITH TILTED TUBE
Filed Feb. 10, 1961
FIG. 4
2 Sheets-Sheet 2
57
‘OI
FIG. 3
EDWARD B’”5§%€"E"§ '
BY ANTHONY PALERMOJR.
United States Patent 0
3,094,6l6
Patented June 18, 1963
1
2
3,094,616
assistants. The radiologist and his assistants must be
able to easily see the image presented on the ?uoroscopic
A m X-RAY TABLE WITH TILTED TUBE
n ony Palermo, In, South Euclid, and Edward B.
screen when a patient is lying prone on a horizontally
disposed surface and the screen is above the patient.
ggiaivlgiahtjlevallanil,
Iglfiio,. D’assignors
to Picker X-Ray
UK Clearly this is a rather di?‘icult objective if the radiologist
on
ar e
. In .
'
acorporation of Ohio g N
c’ Cleveland’ Ohm,
is short and the patient is large.
Filed Feb. _10, 1961, Ser. No. 88,352
18 Claims. (Cl. 250-615)
With the mechanism of this invention a substantial
improvement in table height is obtained. An X-ray tube
of the rotating anode type is carried in a housing beneath
This invention relates to X-ray apparatus and more 10 the table. The tube and housing provide the advantages
which permit the obtainment of a lower table. The
pazglticu’larly to the X-ray tables of the type known as “tilt
es.
In medical X-ray examination of human patients, to
determine the state of physical well being \of the patient
specially designed X-ray tables are used which provide a
support surface upon which the patient can lie in a prone
p.0S1t10I'1.‘ In one class of table an X-ray tube is posi_
tube is constructed such that the target area ‘on the anode
is remote from the table support surface. Thus a beam
of X-rays is emitted from a target area on the lower
side of the tube and the beam passes through the tube
and out a window ‘on the side of the tube remote from
the target area.
The tube is positioned in a housing which is mounted
tioned within the body of the table and below the sup
at an angle with respect to the table supporting surface
porting top table surface. This tube emits a .beam of
X-rays which are directed upwardly through the table top 20 so that the longitudinal axis of the housing and preferably
for examination of a patient.
A_ device known as a ?uoroscopic column or tower is
coincident axis of rotation of the anode are at an angle
1s mounted on the column for movement along the col
The described arrangement permits the lowering of
with the surface. This permits the X-ray beam to travel
from the target area remote from the X-ray window in
carried on suitable guides within the table body. This
the housing through the window without excessive
column is movable relative to the support surface along
paths which are both longitudinal and transverse with re 25 “shadow” being caused by the anode structure, the mecha
nism for connecting the target to the remainder of the
spect to the surface. The X-ray tube is supported by
anode and the like.
this column and moves with it. Usually a mechanism
the table top for two reasons. It permits the lowering
30 of the top relative to the tube while maintaining the same
mechanisms are known as “spot ?lm” devices.
The spot ?lm device is positioned in the path of a
target-to-top distance because the target is on the remote
side of the X-ray tube. Additionally the tilting of the
beam of X-rays emitted by the tube and on the side of
tube housing reduces the space required in the table
the support surface opposite the X-ray tube. The usual
body for any selected amount of longitudinal travel. This
spot ?lm device will have both a ?uoroscopic screen for
is both because (1) the tilting of the housing shortens its
?uoroscopic examination of a patient and a carrier mecha
umn toward and away from the support surface. Such
msm for carrying a suitable ?lm holder such as a cassette.
The carrier is selectively movable into and out of the
effective longitudinal length and (2) the lower portions
path of X-rays for radiographic exposure of a ?lm carried
previously possible without affecting the amount of lon
in the cassette.
gitudinal tube travel. Thus the entire table :body can be
of the table :ends can be slanted inwardly more than was
Usually modern X-ray table bodies are supported for 40 lower because the clearance problem of tilting is reduced
movement of the supporting surface in one direction
when the lower ends of the housing are so slanted.
from a_ horizontal position to a vertical position where
the patient is upright. The table bodies are also movable
1n the opposite :direction. In US. Patent No. 2,872,584
Another of the features ‘of the invention resides in
the housing in which the X-ray tube is encased. This
housing is within the body. It is connected to the col
to R. C. Schiring et al., for an X-ray Apparatus, a 45 umn and moves with it. This housing includes a hollow
so-called “90-90” table is shown in which the table
central portion that carries the X—ray tube. The tube has
electrical connections at opposite ends of the housing
body is tiltable from the horizontal position 90° in either
central portion. ‘The housing also includes a pair of
direction to the vertical. Other types of mechanisms
for tilting table bodies are well known in the art both for
arms which receive and retain end connectors on a pair
the provision of 90-—90° tables and the provision of
of high tension electrical cables.
tables which are tiltable for example in ‘one direction to
The arms are positioned on opposite sides of the cen
a vertical position and in the other direction to a so
tral portion and are positioned such that the cable con
called “15° Trandelenber-g position.”
nectors parallel the longitudinal axis of the housing and
The invention presented "here is applicable for most
of the tube. The arms are directed in opposite directions
any of these various types of tilt tables and it is shown 55 terminating at locations which are relatively near the lon
1n its preferred form with a tilting mechanism similar to
gitudinal mid-point of the housing. In this way the loads
that taught in the Schiring et al. patent.
imposed by the cables are symmetrically disposed in a
In the Schiring et al. apparatus the table body is sup
balanced fashion so that easy column movement is ob
ported on a pedestal.
When moved from the horizontal
tained.
In addition the cables are free and clear of the
to the vertical position the body is simultaneously tilted 60 body and the like in all column positions so that the de
scribed advantages of a lower X-ray table are fully real
and shifted translationally relative to the‘ pedestal. The
ized without cable interference.
Other advantages and a fuller understanding of the
table body which is tiltable. Thus, the limiting factors 65 invention may be had by referring to the following de
scription and claims taken in conjunction with the ac
in determining how low a table can be are: (1) the depth
purpose of this simultaneous shifting and tilting is so that
the support surfaces may be as low as possible with a
of the body required to place the X-ray tube the required
distance below the table support surface, and (2) the
provision of a tilting mechanism which can tilt the body
companying drawing in which:
FIGURE 1 is a front elevational view of an X-ray
table;
FIGURE 2 is a sectional view of an end portion of
without the body striking the ?oor or pedestal or the like. 70
the table body, which end is the left hand end portion in
The provision of a table which is as low as possible
FIGURE 1, on an enlarged scale with respect to FIG
is an important consideration to radiologists and their
3,094,616
4
URE l and as seen from a longitudinal plane of cross
section;
FIGURE 3 is a sectional View of the rearward portion
of the table body on the scale of FIGURE 2 and as seen
from a transverse plane of cross section; and,
FIGURE 4 is a sectional view of the improved tube
driven by induction windings 33. The windings 33 are
external of a glass X-ray tube insulator 34.
The anode assembly also includes a target 35 which is
carried on the inner end of the anode assembly. The tar
get 35 of this tube is the reverse of the usual tube. That
is, the target 35 is a frusto-conically shaped member with
housing as seen from a longitudinal plane ‘of cross sec
a target area 36 on the inner concave surface of the tar
tion and on an enlarged scale with respect to the other
get 35. The target area 36 is struck by a flow of electrons
emitted by a suitable cathode 37. As is best seen in FIG
URES 2 and 4, the cathode 37 and the target 36 are pref
erably symmetrical about a plane normal to the table top
13 and located by the axis of rotation of the anode and
drawings.
. .
Referring now to the drawings and to FIGURE 1 in
particular, a pedestal is shown generally at iii. A por
tion of the pedestal houses a drive mechanism, portions
of which are shown in dotted lines at 11. This drive
mechanism 11 selectively causes translational movement
of a table body 1-2, relative to the pedestal it} and simul
taneous tilting from the horizontal position shown. This
tilting mechanism may be the mechanism taught in the
referenced Schiring et a1. Patent No. 2,872,584 which pro
vides tilting of 90° in either direction from the horizontal
position.
the preferably coincident longitudinal axis of the housing.
The target area 36 and the cathode 3'7 are positioned be
low the axis of anode rotation such that the axis is be
tween the target area 36 and the table top. Thus, the
. target area is on the side of the X-ray tube remote from
the housing X-ray window 30. With this construction
and a tube of given size positioned a given distance from
20 ‘the table top, the target-to-top distance will be about 2
inches greater than a table with the usual tube positioned
The table body 12 includes a support surface 13 on
this same given distance from the table top.
which a patient is positioned. The usual spot ?lm device
The tilted housing permits an X-ray beam generated
is provided at 14 above and spaced from the support sur
on such a remote X-ray target to be emitted from the
face 13. The spot ?lm device 14 may be of the type de
scribed in greater detail in U.S. Patent No. 2,749,445. 25 window of the tube without any problem of a so-called
“shadow” being cast by the remainder of the target and
This spot ?lm device includes a ?uoroscopic screen 15
its supporting assembly. Additionally, as is best seen in
and a means within the device to selectively position an
‘FIGURE 2, the tube nests nicely at one end of the table
X-ray ?lm in an exposure position. The spot filmer is
permitting an abrupt slanting in of the end of the table
carried on a column 117 for relative movement along a
at the location indicated by the numeral 46. The table
path toward and away from the support surface 13.
is cut away at 40 far more than has been previously pos
The column 17 includes an inwardly extending sup
‘sible but the same longitudinal tube travel as has been
porting carrier 18 which is disposed in part within the
available in the past is obtained. Further, the tilting
table body 12. The column carrier 18 extends through a
of the tube housing 25 shortens the effective longitudinal
slot 19 which is provided at the back of the table. The
length of the housing and further reduces the amount of
column carrier 13 is supported by rollers 21 which ride
space required in the table for any given amount of longi
on a carriage 20. The carrier 18 is reciprocable on the
tudinal housing travel.
carriage 2e transversely of the body.
Another of the features of the invention resides in the
The carriage 26 is reciprocally mounted in the body
arrangement of the cable ‘connections. The housing in
12 on rollers 22 which ‘coact with guides 23. The car
cludes anode and cathode arms 41, 42. These arms have
riage 20 is movable along a longitudinal path which is
female electrical connection receptacles 43, 44 which re
parallel to the support surface 13. The column carrier 18
‘ceive m'ale'cable connectors 45, 416. The cable connectors
is, of course, movable longitudinally with the carriage
45, 46 are end connections for high~tension cables 47, 43
29. As will be apparent, the longitudinally extending
respectively.
opening 19 at the back of the table is of su?icient longi
The anode and cathode receptacles 43, 44 are respec
tudinal extent to permit free longitudinal travel of the 45
tively connected to the X—ray tube by bus~bar-like con
carriage 20 and the elements supported by it.
'ductors 49, 50. These conductors 49, 59 are positioned
An X-ray tube housing is shown generally at 25. The
in passageways at the ends of the housing. These pas
housing 25 is connected by a support member 26 to the
sageways communicate with the X-ray tube housing
column carrier 18. The support member 26 is prefer
ably in the shape of an inverted frustum of a pyramid. 50 ‘cavity.
The ‘arms 41, 42 respectively terminated at ends 51,
The support member is so shaped to permit free passage
52. These ends 51, 52 include the connector receiving
of the usable portion of an emitted beam of X-rays, and
openings to ‘the electrical cable receptacles 43, 4.4 respec
to provide a portion of the shielding for the operator and
tively. The arm ends 51, 52 are each positioned rela
the patient from that portion of the emitted rays which
are not used and from so called “scatter radiation”. This 55 tively near the housing central portion. The arms are
oriented in opposite directions with the receptacles 43,
usable portion of the emitted beam and the support mem
44 each having an axis paralleling the common axis of
ber 26 are, in the customary manner, positioned symmetri
the housing central portion 27 and the X-ray tube 31.
cally about an imaginary line normal to the support sur
face 13.
As is best seen in FIGURE 4, the housing is made
The X-ray tube housing 25 includes an elongated cen 60 of "a number of parts which are fabricated into two prin
cipal sections. The anode arm 41 and the anode end
tral portion 27. The central portion 27 has a longitudinal
part of the housing central portion 27 comprise the ?rst
axis which is disposed in a plane which is normal to the
of ‘these sections. In the preferred and disclosed ar
table top 13. The longitudinal axis of the housing-central
rangement this ?rst section is a unitary cast section
portion 27 is at an angle with the table top so that one
end, the left in FIGURE 2, 28 is higher than the oppo 65 designated by the numeral 54.
The second section is composed of a middle part 55,
site end 29. The longitudinal axis of the central portion
27 is preferably at an angle of about 15° with the plane
which is the middle part of the housing central portion
of the table top 13.
27, ‘a cathode part 56, which includes the cathode arm
The housing central portion 27 includes an X-ray aper
42, ‘a ‘cathode end part of the housing central portion 27,
ture or window 30, FIGURE 3, at the top thereof. An 70 and a cathode end cap 57. The middle part 55 and the
X-ray tube 31 is positioned in a cavity in the housing cen
cathode end part 56 are welded together at 58 to fabri
tral portion 27 and located to emit a beam of X-rays
ca'te a unitary section. The anode section 54 includes
through the housing window 30. The tube 31 is prefer
an annular mounting ?ange 59 which is bolted to the
ably of the rotating anode type. That is, the tube has
middle part 55 of the second or cathode section.
an anode assembly which includes a motor armature 32 75
With this described construction, the two housing sec
3,094,616
5
tions are rotatable relative to one another so that the
relative position of the arms 41, 42 can be adjusted. In
the embodiment shown and in most X-ray table appli
cations, these arms 41, 42 are disposed on opposite sides
of, and equal distances from an imaginary plane located
by the axis of the housing central portion 27 and normal
6
(c) the body having a support surface;
(d) a column mounted in the table for movement along
transverse and longitudinal paths paralleling the
table surface;
(e) an X-ray tube housing carried by the column and
having a longitudinal axis at an acute angle with
may be rotated relative to the cathode section and then
secured in a desired position to provide full and complete
the surface and the path of travel;
(1‘) an X-ray tube within the housing and oriented
to emit a beam of X-rays along a path generally
normal to the table surface;
(g) said housing being positioned such that it nests
clearance of the cables 47, 48. Further ?exibility for
special situations is provided because the cathode part
against one of the end walls with one end of the
tube abutting the end wall at a ?rst location spaced
to the support surface 13. The arms are so disposed
to provide a balanced cable load on the housing support.
Where special situations require it, the anode sections
56 may have an in?nite number of positions relative to
the middle part 55. In the preferred and disclosed con 15
struction these relative positions must be permanently
selected before the weld 58 is made. Such special situa
tions would include the situation when other accessories
or the like are in the table which may interfere with the
from the base wall; and,
(It) said housing having another end nearer the base
wall and positioned to abut the other of said end
walls at a second location nearer the base wall than
the ?rst location.
4. The device of claim 2 wherein the target area is
cables and when the housing is used above an X-ray
symmetrically disposed about an imaginary plane in
table on a so-called ceiling tube mount.
cluding such axis of rotation and normal to such surface.
With the unique housing construction which has been
5. In an X-ray table having a pedestal, a body with a
support surface tiltably carried by the pedestal and a
column mounted in the body for relative longitudinal
ing parts. Thus minimizing of interference of column 25 transverse movement, the combination of, an X-ray tube
movement further enhances the space requirements with
housing disposed within the body and mounted on the
described there is a minimized interference with the
freedom of movement ‘of the column 17 and its connect
in the table and therefore further contributes to a com
column for movement therewith relative to the body, an
pact table body and the attendant advantages of a lower
X-ray tube ‘within the housing, the housing and tube hav~
table top.
7
ing a longitudinal axis disposed at ‘an angle with said
While the invention has been described with a great 30 support surface and the path of such lateral movement,
deal of detail it is believed that it essentially comprises
the tube including a rotatable anode and a cathode posi
an X-ray table including a body and a column mounted
in the body for relative longitudinal and transverse move
ment, an X-ray tube housing on the column, and dis
posed within the body, the housing has a longitudinal
axis which is disposed at an angle with the support sur
face and with the path of such longitudinal and trans
verse movement.
tioned to bombard a target area on the anode, and said
target area being positioned with the axis of anode rota
tion between the area and said support surface.
6. An X-ray apparatus comprising a pedestal, a table
body movably mounted ‘on said pedestal, the body hav
ing a support surface, means interposed between the body
and the pedestal for tilting the body relative to the ped
Although the invention has been described in its pre
estal from a ‘horizontal to a vertical position and return
ferred form with a certain degree of particularity, it is 40 while simultaneously shifting the body translationally
understood that the present disclosure of the preferred
along a path paralleling the table surface, a column
form has been made only by way of example and that
mounted in the table with the mounting on one side of
numerous changes in the details of construction and the
said surface which side is beneath said surface when the
combination and arrangement of parts may be resorted
surface is horizontal, said column being longitudinally
to without departing from the spirit and the scope of
45 and transversely movable relative to said body, an X-ray
the invention as hereinafter claimed.
tube housing carried by said column within said body on
What is claimed is:
said one side of said surface, an X-ray responsive ele
1. In an X-ray table having a body with a support
ment carried by the column and ‘above said surface when
surface and a column mounted in the body for relative
the surface is horizontal, an X~ray tube within the hous
longitudinal and transverse movement in a path parallel
ing and having a rotatable anode, the anode including a
ing the surface, the combination of, an X-ray tube hous
frusto-conical target, said tube having a cathode posi
ing mounted on the column and disposed within the
tioned to bombard an area on the inner surface of said
body said housing having a longitudinal axis disposed
fmsto cone, said anode having an axis of rotation at an
at an acute angle with said support surface and the path
acute angle with respect to said surface and between said
of such longitudinal and transverse movement, and an 55 target area and said surface, and cables connected to said
X-ray tube within the housing oriented to emit a beam
housing.
symmetrically about an imaginary line normal to such
7. The device of claim 6 wherein the angle of the
path and the surface.
anode axis is at a sufficient angle with the surface to place
2. In an X-ray table having a body with a support
the portion of the frusto-cone opposite the target area
surface and a column mounted in the table for relative 60 free of a cone of emitted rays of the greatest apex angle
longitudinal movement, the combination of, an X-ray
required for operation of the apparatus.
tube housing mounted on the column and disposed with
8. An X-ray table comprising a pedestal, a body mov
in the body, an X-ray tube disposed within the housing
ably m-ounted on said pedestal, means interposed between
and having a rotatable anode and a cathode, said cathode
the body and the pedestal for tilting the body relative to
being positioned to bombard a target area on said anode
65 the pedestal f-nom a horizontal to a vertical position and
with a flow of electrons in a beam having a center line
return and simultaneously moving the body translational
generally normal to the support surface, and said anode
having an axis of rotation between said target area and
ly, the body having a support surface, a column mounted
in the table with the mounting on one side of said sur
said support surface and at an angle with said support
face, which side is beneath said surface when the surface
surface.
70 is horizontal, said column being longitudinally and trans—
3. An X-ray table comprising,
versely movable relative to said body, an Xaray tube hous
(a) a pedestal;
ing carried by said column on said one side of said sur
(b) a hollow body mounted on the pedestal and in
face and within said body, a ray responsive sheet carried
cluding a base wall and end walls tapering inwardly
by the column on the other side of said surface, an X-ray
adjacent the base wall;
75 tube ‘within the housing and having a rotatable anode,
3,094,616
7
8
said tube having a cathode positioned to bombard a tar
get area on said anode, said anode having an axis of
rotation at an acute angle with respect to said surface
and between said target area and said surface, movable
of intersection on one of the table ends and “spaced up
wardly from'the basedelimits'the extent of column move
‘
ment in one direction.
face and carried by the column between the tube and the
body surface, the diaphragms delimiting the cross sec
14. A housing for an‘X-ray vtube comprising, an elon‘
gated central portion de?ning an X-ray tube receiving
cavity, said central portion including a windowdisposed
centrally thereof and communicating vwith said cavity,
tional area of an emitted beam impinged on an object
?rst and second cable connection arms projecting onop
X-ray impervious diaphragms paralleling the body sur
under study, said angle of the axis of rotation being suth
posite sides of the .body central portion and disposed
cient to maintain the portion of the anode opposite said 10 along paths generally paralleling the longitudinal axis of
target area out of the path of such delimited beam in all
the housing, said arms including electrical terminal re
operating positions, and electric cab'les connected to said
ceiving receptacles oriented in opposite directions and
housing and electrically connected to the tube.
terminating in end openings near the ‘longitudinal mid
9. An X-ray table comprising, a pedestal, a table body
point of said central portion, said housing including pas
pivotally mounted on said pedestal and shiftable transla 15 sageways providing communication between said recep
tionally relative to the pedestal, said table body including
tacles and said cavity, conductors in said passageway for
an upper support surface located in ‘a planepara'lleling the
respective-1y connecting each end of the tube receiving
path of such translational shifting, longitudinal guides
cavity with one of the receptacles, and said arms-and said
within the table body and paralleling said surface, a car
central portion each having longitudinal axes generally
riage mounted on the guides for longitudinal travel there 20 paralleling one another and the tube receiving cavity and
along, said body including an elongated carriage opening
generally normal to the axis of the X-ray window.
‘at the rear thereof, a ?uoroscopic column including a
carrier projecting through the elongated opening and
carried by the carriage, said carrier and column being
15. The device of claim 14 wherein the arms are dis
posed on opposite sides of an imaginary plane bisecting
said window and including the longitudinal axis of the cen
reciprocal transversely of the table top and relative to 25 tral portion and wherein'said arms are equal distances
said carriage, an X-ray tube support carried by the carrier
from such plane.
and disposed within the body, an X-ray tube housing
16‘. The device of claim 14 wherein the housing in
carried by the support and also disposed within the table
cludes anode and cathode sections, wherein each such
body, said tube support being between the housing and
section includes one arm and a part of said centralportions
the carrier, the carrier and the support each being be 30 and wherein said sections are relatively rotatable about
tween the housing and said surface, said housing includ
the longitudinal axis of the central portion and a means is
ing an X-ray window; an X-ray tube positioned within
provided to ?x the two sections in a selected relative posi
the housing and oriented to emit a beam of X~rays through
tion to orient the arms relative to one another.
said window, said tube support, said carrier, and said
‘17. The device of claim 15 wherein the tube includes
surface for the conduction of an X-ray examination; said 35 a rotatable anode including a'target area and an axis of
X-ray tube including a rotatable anode having an axis of
rotation between the target area ‘and the support surface
rotation coincident with the longitudinal ‘axis of the X-ray
and substantially coincident with said housing longitudinal
housing, said coincident axes being at an angle with said
axis.
surface, and said anode including a target area positioned
18. An X-ray table comprising,
with said coincident axes between the target area and 40
(a) a pedestal;
the table top.
(b) a hollow body mounted on the pedestal and includ
10. An X-ray apparatus comprising a pedestal, a table
ing a base wall and end walls tapering inwardly adja~
body movably mounted on said pedestal, means inter
cent the base wall;
posed between the body and the pedestal for tilting the
(0) the body'having a support surface;
body relative to the pedestal from a horizontal to a verti 45
cal position and return, ‘the body having a support sur
face, a column mounted in the table with the mounting
on one side of said surface ‘which side is beneath said sur
(d) a column mounted in the table for movement along
face when the surface is horizontal, said column being
ilongitudinally and transversely movable relative to said 50
body, an X-ray tube housing carried by said column on
having a'longitudinal axis at an acute angle with the
said one side of said surface and within said body, a ray
responsive sheet carried by the column on the other side
of said surface, an X-ray tube within the housing ‘and
having a rotatable anode, said tube having a cathode 55
positioned to bombard a target area on said anode and
cause a beam of X-rays to be emitted along a path gen
erally normal to the support surface, said anode having
van axis of rotation at an acute angle with respect to said
surface and between said target area and said surface, 60
and cables connected to said housing and extending
through a wall of the body for connection to a source of
electric potential.
11. The device of claim 10 wherein the cables have
end connections disposed in opposite directions and on 65
opposite sides of such axis of rotation.
12. The device ‘of claim 11 wherein the end connec
tions are disposed symmetrically about an imaginary plane
located by the axis of rotation and a horizontal line inter
secting such axis.
70
13. The device 1of claim 10 wherein the table has a ?at
base and spaced ends slanted inwardly adjacent the base,
and wherein one end of the housing lies adjacent the
base and the other is spaced therefrom and wherein the
coaction of said other housing end and an imaginary line 75
transverse and longitudinal paths paralleling the
table surface;
(e) an X-ray tube housing carried by ‘the column and
surface and the path of travel;
(7‘) an X-ray tube within the housing and oriented to
emit a beam of X-rays along'a path generally nor
mal to the table surface;
(.g) said housing comprising:
~(i) an elongated central portion de?ning an X-ray
tube receiving cavity and including ‘a window
disposed centrally thereof and communicating
with said cavity;
(ii) ?rst and second cable connection arms pro
jecting on opposite sides of the body central por
tion and disposed along paths generallyparal
leling the longitudinal axis of the housing;
v(iii) said arm-s including electrical terminal re
ceiving receptacles oriented in opposite directions
and terminating in end openings near the longi
tudinal midpoint of said central portion;
(iv) said housing including passagewaysproviding
communication between said receptacles and
said cavity;
(v) conductors in said passageway for respective
ly connecting each end of the tube receiving ‘cavi
ty with one of the receptacles;
(vi) said central portion including an axis coinci
dent with a part of the housing longitudinal axis;
and,
3,094,616
(vii) said arms having longitudinal axes generally
paralleling another and the longitudinal axis of
the housing and generally normal to the axis of
the X-ray window.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,594,171
1,624,331
1,828,092
Grobe _______________ __ July 27, 1926
Geyser ______________ __ Apr. 12, 1927
Wantz et a1. __________ __ Oct. 20, 1931
2,000,497
2,228,3 84
2,292,859‘
2,3 15,786
2,7 12,080
2,96‘6,5 88
10
Pohl __________________ __ May 7,
Bouwers et al __________ __ Jan. 14,
Allibone _____________ __ Aug. 11,
Grobe ________________ __ Apr. 6,
Koerner et al __________ __ June 28,
Kizaur ______________ __ Dec. 27,
1935
1941
1942
1943
1955
1960
FOREIGN PATENTS
695,195
Germany _____________ __ Aug. 19, 1940
Документ
Категория
Без категории
Просмотров
0
Размер файла
872 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа