-
公开(公告)号：US4344013A
公开(公告)日：1982-08-10
申请号：US286827
申请日：1981-07-27
Applicant: Robert S. Ledley
Inventor： Robert S. Ledley
Abstract: Disclosed is a reusable microfocus X-ray tube adapted to generate a relatively large number of X-rays in a relatively short period of time using a narrowly focused electron beam. The X-ray tube comprises means for producing a dense, narrow electron beam, a target anode, and means for causing relative movement of the electron beam and the target anode such that the electron beam and the target anode are stationary relative to each other during production of the X-rays but a fresh portion of the surface of the target anode is presented to the electron beam each time the X-ray tube is used. The X-ray tube includes (a) means for collecting charged particles boiled off the target anode by the electron beam, (b) means for increasing the quantity of electricity delivered to the heater cathode, (c) means for counting the number of times the X-ray tube is used, and (d) means for generating a signal when the X-ray tube has been used a first predetermined number of times.
Abstract translation: 公开了一种可重复利用的微焦点X射线管，其适于使用窄聚焦电子束在相对短的时间内产生相对大量的X射线。 X射线管包括用于产生致密的窄电子束的装置，目标阳极和用于引起电子束和目标阳极的相对运动的装置，使得电子束和靶阳极相对于彼此处于静止状态 每次使用X射线管时，X射线的产生和目标阳极的表面的新鲜部分被呈现给电子束。 X射线管包括：（a）用于通过电子束收集从目标阳极沸腾的带电粒子的装置，（b）用于增加输送到加热器阴极的电量的装置，（c）用于计数次数的装置 使用X射线管，（d）当X射线管被使用第一预定次数时产生信号的装置。
-
公开(公告)号：US4276493A
公开(公告)日：1981-06-30
申请号：US73757
申请日：1979-09-10
Applicant: Saroja R. Srinivasa , Peter S. Shelley , Robert E. Hueschen
Inventor： Saroja R. Srinivasa , Peter S. Shelley , Robert E. Hueschen
CPC classification number: H01J35/10 , Y10T403/32286 , Y10T403/64 , Y10T403/7021
Abstract: A graphite target disk for a rotating anode x-ray tube is adapted for mounting it on a rotor stem in a manner which reduces the probability of the target cracking when it is subjected to high magnitude thermal and rotational shocks. The graphite disk has a counterbore in its front and rear faces which are connected with a smaller central bore so the counterbores define annular shoulders. A washer having a slot which serves as a keyway is brazed concentrically onto the shoulder of the front counterbore. The rotor stem has a threaded end which registers complementarily in the slot to effect a driving connection and the stem has a radially extending shoulder which interfaces with the shoulder in the rear counterbore. A nut on the threaded stem end secures the target to the stem.
Abstract translation: 用于旋转阳极x射线管的石墨靶盘适于将其安装在转子杆上，以降低当受到高大小的热和旋转冲击时目标开裂的可能性的方式。 石墨盘的前表面和后表面具有与较小中心孔连接的沉孔，因此沉孔限定环形肩部。 具有用作键槽的槽的垫圈同心地钎焊在前沉孔的肩部上。 转子杆具有螺纹端，其在槽中互补地注入以实现驱动连接，并且杆具有与后沉孔中的肩部接合的径向延伸的肩部。 螺纹杆端的螺母将目标固定在杆上。
-
公开(公告)号：US4255685A
公开(公告)日：1981-03-10
申请号：US54410
申请日：1979-07-03
Applicant: Rudolf Friedel
Inventor： Rudolf Friedel
CPC classification number: H01J35/10
Abstract: In order to reduce stresses which occur during radiation production because of the heating-up of the anode, radial bores are formed in the main body member of the anode which extend under the focus path region. Thus, smooth solder surfaces free from recesses can be obtained for receiving auxiliary material such as graphite for increased heat storage and radiation capability. The disclosed rotating anode is particularly suited for x-ray tubes utilized in medical diagnostics.
Abstract translation: 为了减少由于阳极的升温而在辐射生产期间发生的应力，在聚焦路径区域下延伸的阳极主体部件中形成有径向孔。 因此，可以获得没有凹槽的光滑的焊料表面，用于接收诸如石墨的辅助材料以增加储热和辐射能力。 所公开的旋转阳极特别适用于医疗诊断中使用的X射线管。
-
公开(公告)号：US4195247A
公开(公告)日：1980-03-25
申请号：US927290
申请日：1978-07-24
Applicant: Harold H. Hirsch
Inventor： Harold H. Hirsch
CPC classification number: H01J35/108 , H01J2235/081 , H01J2235/083
Abstract: Rotary targets for X-ray tubes are provided comprising a molybdenum base body alloyed with a stabilizing proportion of iron, silicon, cobalt, tantalum, niobium, hafnium, stable metal oxide, or a mixture of the preceding.
Abstract translation: 提供X射线管的旋转靶，其包括与稳定比例的铁，硅，钴，钽，铌，铪，稳定金属氧化物或前述混合物合金的钼基体。
-
公开(公告)号：US4182955A
公开(公告)日：1980-01-08
申请号：US911405
申请日：1978-06-01
Applicant: Gordon P. Davis
Inventor： Gordon P. Davis
CPC classification number: H01J35/14 , H01J35/08 , H01J2235/086
Abstract: An X-ray tube in which the electron beam is deflected over the X-ray emissive anti-cathode is provided with an anti-cathode, the surface on which the electrons impinge is corrugated in order to aid in the dissipation of heat.
Abstract translation: 其中电子束偏转在X射线发射反阴极上的X射线管设置有反阴极，电子撞击的表面是波纹状的，以帮助散热。
-
Patent Agency Ranking
公开(公告)号：US4168449A
公开(公告)日：1979-09-18
申请号：US845716
申请日：1977-10-26
Applicant: Hideo Koizumi , Shigeharu Nishino , Michiyasu Komatsu , Tadashi Miyano
Inventor： Hideo Koizumi , Shigeharu Nishino , Michiyasu Komatsu , Tadashi Miyano
CPC classification number: H01J35/108 , H01J2235/084
Abstract: A rotary anode for an X-ray tube comprising an anode body formed of graphite, a target layer formed of tungsten or alloy thereof, and an intermediate layer containing rhenium and molybdenum, the intermediate layer being interposed between and bonded with the anode body and target layer. This rotary anode may be obtained by forming over a target area of the graphite anode body a paste layer containing rhenium powder and molybdenum powder, laminating over the paste layer a layer formed of tungsten or alloy thereof, and then hot-pressing the resultant laminated body under vacuum or in an inert gas by means of a pressure transmitting powder.
Abstract translation: 一种用于X射线管的旋转阳极，包括由石墨形成的阳极体，由钨或其合金形成的靶层，以及包含铼和钼的中间层，所述中间层插入在阳极体中并与阳极体接合 层。 该旋转阳极可以通过在石墨阳极体的目标区域上形成包含铼粉末和钼粉末的糊料层，在糊料层上层叠由钨或其合金形成的层，然后热压所得到的层叠体 在真空下或通过压力传递粉末在惰性气体中。
-
公开(公告)号：US4109154A
公开(公告)日：1978-08-22
申请号：US779025
申请日：1977-03-18
Applicant: Leonhard Taumann
Inventor： Leonhard Taumann
CPC classification number: H05H6/00 , G21K1/10 , H01J35/08 , H01J2235/087
Abstract: In an electron accelerator having a target which is exposed to an electron beam for the production of x-ray deceleration radiation, a conical compensating member is arranged centrally within a cone pattern of the x-ray radiation. The compensating member has a decreasing conical shape toward the target and merges into a cylinder portion. Beam paths within the cylinder portion which are additional to those in a conventional purely conical compensating member are compensated by a recess positioned in a base of the compensating member having an appropriately selected depth. In another embodiment, a conically shaped compensating member is arranged within the cone-shaped x-ray pattern such that a tip of the compensating member is aligned away from the target and a base is aligned toward the target. A collimator having a conical passageway surrounding the x-ray radiation has a groove for receiving the base of the compensating member so as to mount the same within the conical passageway of the collimator.
-
公开(公告)号：US4057745A
公开(公告)日：1977-11-08
申请号：US663988
申请日：1976-03-04
Applicant: Richard D. Albert
Inventor： Richard D. Albert
CPC classification number: H05G1/66 , A61B6/145 , A61B6/4028 , H05G1/36 , H05G1/60 , A61B1/00087
Abstract: Radiographic images of high definition and clarity are produced quickly and with reduced radiation exposure of the subject by utilizing a scanning X-ray source in which a moving point source of X-rays is created by sweeping an electron beam in a raster pattern on a broad anode. A radiation detector having a very small radiation sensitive area is situated on the opposite side of the subject from the source. The output of the detector controls electron beam intensity within a cathode ray type display tube wherein the raster pattern is synchronized with that of the X-ray source to produce an image of internal structure of the subject. In some embodiments of the invention, the small radiation detector is mounted on a probe suitable for insertion into internal regions of a living body or into recesses in mechanical structure to be examined. Stereo images may be produced by employing two spaced apart detectors controlling two separate images which are directed to separate eyes of the observer or by using a single detector alternately controlling each of the two images while the raster pattern at the source is alternately shifted between two at least partially separate areas of the anode. As the detector output is an electronic signal, the image data may be stored on magnetic tape or the like and may also be readily processed by electronic techniques for such purposes as image enhancement, and addition, subtraction or superimposition of images. Automatic brightness control may also be provided to produce uniform contrast in different areas of the image where the corresponding different regions of the subject have different average densities.
Abstract translation: 通过利用扫描X射线源，快速地产生高清晰度和清晰度的射线照相图像，并且通过扫描X射线源减少辐射照射，其中通过以广泛的光栅图案扫描电子束来产生X射线的移动点源 阳极。 具有非常小的辐射敏感区域的辐射检测器位于与源相对的对象的相反侧。 检测器的输出控制阴极射线型显示管内的电子束强度，其中光栅图案与X射线源的光栅图案同步，以产生被摄体的内部结构的图像。 在本发明的一些实施例中，小型辐射检测器安装在适于插入生物体的内部区域的探针上或被检查的机械结构的凹部中。 可以通过使用两个间隔开的检测器来产生立体图像，所述两个分离的检测器控制指向观察者的分离的眼睛的两个分离的图像，或者通过使用单个检测器交替地控制两个图像中的每一个，同时源处的光栅图案在两个之间交替移位 阳极的最小部分分离区域。 由于检测器输出是电子信号，所以图像数据可以存储在磁带等上，并且也可以通过电子技术容易地进行处理，用于图像增强，图像的加法，减法或叠加等目的。 还可以提供自动亮度控制以在图像的不同区域中产生均匀的对比度，其中对象的相应不同区域具有不同的平均密度。
-
公开(公告)号：US4006361A
公开(公告)日：1977-02-01
申请号：US555047
申请日：1975-03-03
Applicant: Stanley O. Schriber
Inventor： Stanley O. Schriber
Abstract: An X-ray beam flattener of predetermined symmetrical shape for attenuating the radiation intensity of the beam in decreasing amounts as the angle from the central axis increases. The symmetrical shape is made from a low Z, high density material such as Al.sub.2 O.sub.3 BeO, BeAl.sub.2 O.sub.4, B.sub.4 C or SiC. A further thin layer of high Z material may be coated on the forward end of the symmetrical shape to absorb low energy photons.
Abstract translation: 一种具有预定对称形状的X射线光束平坦化器，用于随着与中心轴的角度的减小而减小光束的辐射强度增加。 对称形状由低Z，高密度材料如Al2O3 + L，BeO，BeAl2O4，B4C或SiC制成。 可以在对称形状的前端上涂覆另一薄层高Z材料以吸收低能量光子。
-
公开(公告)号：US4000434A
公开(公告)日：1976-12-28
申请号：US586166
申请日：1975-06-12
Applicant: Horst Schreiner , Ernst Geldner
Inventor： Horst Schreiner , Ernst Geldner
CPC classification number: H01J35/108
Abstract: A layered pressed and sintered anode body consisting of a support body of a tungsten-molybdenum alloy having a first layer of tungsten or tungsten alloy on the surface which is impinged by electrons and having a second layer of a higher melting point material on the other side whose tensile strength at the elastic limit is greater, at temperatures of 1400.degree. to 1600.degree. C, than the tensile stresses occurring at these temperatures to avoid warping of the anode.
Abstract translation: 一种分层压制和烧结的阳极体，由钨 - 钼合金的支撑体构成，其在表面上具有第一层钨或钨合金，该第一层由电子撞击并且在另一侧具有第二层较高熔点的材料 其在弹性极限下的拉伸强度在1400℃至1600℃的温度下比在这些温度下发生的拉伸应力更大以避免阳极翘曲。
-
-
-
-
-
-
-
-
-
Search Results
999
records
(took 0.016 seconds)
