IL36623A - Portable x-ray generator - Google Patents

Description

Portable generator THE CORPORATION Ct 34864 The present invention relates to a portable having an tube and a generator power Approximately to volts are needed to operate ray The problem of insulating a voltage of such magnitude the development of portable tube One portable unit includes a containing a Marx generator a alongside and a slight distance away from an The d generator are connected by a coaxial cable of high voltages without melting or breaking The the conductive of generator are formed from thin copper a material that has a high coefficient of absorption for Since the spiral generator surrounds the it protects an operator from during operation so that only a minimum of separate films which separate the copper foils are not It is believed that the inclusion of such detail in the drawing would not aid the but would stead detract from the invention which lies in the combination and arrangement of The innermost end of the outer copper foil 16 is connected to the 20 of 12 by a bar 22 and a copper line The outer end of copper foil 16 is connected to the cathode 26 of the tube by a copper line 28 and finger contacts The inner foil 18 is connected by cable 31 to a power source 32 which provides a charging voltage to that In the spiral generator will produce a peak output voltage equal to two times the charging voltage times the number of turns in the spiral generator In while extremely high voltages have been the output is somewhat less than this theoretical The spiral generator of this embodiment produces an output voltage pulse on the order of volts when supplied with a volt charging Both the tube 12 and spiral generator 14 are surrounded and held by a resin housing 34 which holds those two elements and also acts to electrically insulate them from each The housing 34 also holds a spark gap switch The opposite sides of the switch 36 are connected to the copper foils 16 and 18 so that when a voltage pulse is supplied to switch 36 along line this switch provides a closed circuit between the two copper foils 16 and 13 and thus triggers the operation of the spiral generator In the inner copper foil 18 of spiral generator 14 is charged to a negative ten thousand volt The charging of foil 18 does not affect foil 16 which remains at ground A voltage pulse is then supplied to switch 36 to short foils 16 and 18 and thus trigger operation of the spiral A transmission wave propagates and forth along the transmission line formed by the windings 16 and 18 and produces a high voltage pulse on the order of volts between the inner and outer ends of the windings and During the pulse a high current flows from winding 16 along buss bar 22 and line 24 to the anode 20 of the through the and back to the spiral through cathode or any combination of the above can be varied from that shown in the illustrated what is claimed insufficientOCRQuality

Claims (4)

36623/2 CLAIMS :

1. An x-ray generating machine comprising an x-ray tube having an anode and a cathode, a generator power source and electrical conducting means connecting said generator and said x-ray tube to supply an operating voltage to said x-ray tube from said generator, characterized in that said generator power source is a spiral generator formed from two conductive foils which are electrically insulated from each other and wound to form a cylindrical roll comprising an open-ended transmission line, said spiral generator having an inner diameter larger than the outer diameter of the x-ray tube, and placed to encircle said x-ray tube.

2. An x-ray generating machine as claimed in claim 1, in which said conducting means connects the anode of said x-ray tube to the innermost end of the outer one of said two conductive foils, and connects the cathode of said x-ray tube to the outermost end of said outer conductive foil, and in which said generator power source further includes a power source connected to supply a negative charging voltage to the inner one of said two conductive foils, and means for triggering the operation of said spiral generator.

3. An x-ray generating machine as claimed in claim 1 or 2, in which said two conductive foils are formed from a conductive material having a high coefficient of absorption for x-radiation.

4. An x-ray generating machine constructed and adapted to operate substantially as herein described with reference to and as illustrated in the accompanying drawings. For fhe Applicant DR. REINHOLO COHH AM PAWNERS