Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 4918713 | System and method for correcting for scattered x-rays The radiation image in a radiation imaging system is improved by extracting a scatter distribution and subtracting the scatter distribution from the radiation image. The scatter distribution is extracted from the radiation image by an adaptive filter usin... | 04/17/1990 |
| 4905268 | Adjustable off-focal aperture for x-ray tubes A radiographic apparatus (10) includes an x-ray tube (16), an off-focal radiation collimator (20), a shutter (22), and a primary beam defining collimator (24) between the x-ray tube and patient receiving region (14). The off-focal collimator is mounted wi... | 02/27/1990 |
| 4905269 | Contoured cassette An energy detecting cassette for detection of electromagnetic energy (X-ray, magnetic resonance imaging (MRI), etc), sound energy, and other detectable forms of energy used for examination of the interior of objects consists of a flat box for holding an i... | 02/27/1990 |
| 4893323 | Combination portable x-ray table and stretcher A combination portable x-ray table and stretcher immobilizes an emergency patient from time of pick-up through x-ray examination without further movement or manipulation of the patient relative to the table/stretcher, thus reducing the risk of further inj... | 01/09/1990 |
| 4891830 | X-ray reflective mask and system for image formation with use of the same X-ray lithography which has been applied, for instance, to reproduction of a pattern for integrated electronic circuit wherein the proximity method is prevailed with use of a transmissive patterned mask. But this conventional method is defective for insta... | 01/02/1990 |
| 4891829 | Method and apparatus for utilizing an electro-optic detector in a microtomography system The present invention is an apparatus and a method for producing tomographic images of an object irradiated by a beam of collimated radiation transmitted in a plurality of rays through a set of coplanar sections of an object as viewed from a plurality of ... | 01/02/1990 |
| 4890309 | Lithography mask with a π-phase shifting attenuator The mask includes an attenuator which passes a fraction of the incident electromagnetic radiation and phase shifts the radiation relative to the radiation passing through open features of the mask by approximately an odd multiple of π radians. This phase... | 12/26/1989 |
| 4890311 | Biopsy means for an x-ray examination apparatus Biopsy assembly for use in an x-ray examination apparatus having an x-radiator with a focus from which a ray pyramid emanates, and a radiation receiver arranged residing opposite the x-radiator for producing an x-ray picture of an examination subject situ... | 12/26/1989 |
| 4890312 | Piezoelectric attenuation tongue system for slit radiography equipment A piezo-electric attenuation tongue system for slit radiography equipment comprises a number of tongues placed next to each other. The tongue system is manufactured by slitting a plate of piezoelectric material from one of the edges but leaving unslit a s... | 12/26/1989 |
| 4887285 | Method and device for determining the spatial distribution of chemicals in an object The invention relates to a method of determining the share of different chemical elements in a layer of an examination zone. The Compton scattered radiation and the Rayleigh scattered radiation are separately determined and the variation of the differenti... | 12/12/1989 |
| 4887287 | Mobile x-ray apparatus comprising exchangeable wheels For transport on rough terrain as well as on the floor of a hospital, a mobile X-ray diagnostic apparatus has exchangeable wheels which are adapted to the relevant surface. When the apparatus is transported on an uneven and soft surface, wide wheels havin... | 12/12/1989 |
| 4884293 | X-ray photographing apparatus An X-ray photographing apparatus includes first and second systems for photographing an object from different directions. A first arm of the first system supports a first X-ray tube thereon and is arranged to be rotatable. A second arm of the second syste... | 11/28/1989 |
| 4884288 | Neutron and gamma-ray moisture assay A method and apparatus is disclosed for determining the moisture content of a substance irradiated by a fast neutron and gamma ray source wherein a fast neutron moderator is positioned in the path of the fast neutrons and gamm rays transmitted through the... | 11/28/1989 |
| 4881251 | Computed tomograph apparatus A computed tomograph apparatus for obtaining tomograms of a subject under examination comprises a supporting table for supporting the subject, and on which a tomogram image pick-up area is defined. The apparatus further comprises an X-ray source for radia... | 11/14/1989 |
| 4879735 | Baggage inspection conveyor baffle and method An improved X-ray baggage inspection device having an input port with a baffle pivotally suspended from an upper edge to substantially occlude an upper selected region of the input port, leaving an open space adjacent to a baggage conveyor having a config... | 11/07/1989 |
| 4875225 | X-ray video system and method for the transillumination of an examination subject An x-ray video system for the transillumination of an examination subject has an x-ray system which generates a transillumination image of a patient using an x-ray beam having a central ray, a diaphragm for gating the x-ray beam which has a number of plat... | 10/17/1989 |
| 4875228 | X-ray gantry An improved gantry for an examination apparatus, such as an x-ray apparatus comprising a source of x-rays and a detector of fluoresced photons, is disclosed. The apparatus is particularly suitable for use in a vehicle such that the examination can be carr... | 10/17/1989 |
| 4873709 | X-ray generator with grooved rotary anode An X-ray generator includes a vacuum vessel; a cathode disposed in the vacuum vessel for emitting an electron beam; a plurality of stators constituting an electric motor and disposed within the vacuum vessel for generating rotating magnetic fields; a drum... | 10/10/1989 |
| 4872191 | Cam-controlled automatic dynamic focusing for computed tomography A dynamic focusing device is provided for an X-ray scanner, the device comprising at least one detector module located in a position to receive, be illuminated by, and respond to X-ray. A source of X-rays is movable toward or away from the detector module... | 10/03/1989 |
| 4872193 | Lithotripsy workstation A lithotripsy workstation which can also be used for X-ray examination includes an X-ray device (5, 6) which is pivotable about a horizontal axis (7), and a shock wave generator (18) which is pivotable about an inclined axis (17) which intersects the hori... | 10/03/1989 |
| 4870668 | Gap sensing/adjustment apparatus and method for a lithography machine A step and repeat mechanism is used with an X-ray lithography system for moving a wafer to be exposed from position to position beneath the source of x-rays. The step and repeat mechanism includes, means for moving the wafer to be exposed with six degrees... | 09/26/1989 |
| 4868844 | Mutileaf collimator for radiotherapy machines In a radiation therapy machine it is desirable to produce irregular radiation field shapes in order to shield critical organs not invaded by the tumor. A multileaf collimator is formed of a multiplicity of heavy metal bar leaves driven relative to frames ... | 09/19/1989 |
| 4868845 | X-ray apparatus with a movable part The invention relates to an X-ray apparatus with a motor-driven movable part. The drive takes place via a shaft, which is mounted in a bearing, the bearing forces of which are measured by a measuring device.... | 09/19/1989 |
| 4868842 | Cathode cup improvement A cathode electrode improvement is disclosed which utilizes a front focus slot having a diverging cross-sectional area to focus an electron beam within an x-ray tube to provide a high emission, small area focal spot.... | 09/19/1989 |
| 4868856 | Multi-component flow measurement and imaging A method of measurement of mass flow rates of multicomponent systems comprises directing gamma radiation from a collimated source onto extended scattering means irradiating the flowing medium with single-scattered gamma photons, detecting scattered photon... | 09/19/1989 |
| 4868393 | Radiation image detecting apparatus In a radiation detecting apparatus having its radiation receiving section composed of two-dimensional or one-dimentional array of radiation sensors, the whole electronic circuit is classified into a temperature-sensitive circuit portion and a temperature-... | 09/19/1989 |
| 4866745 | Ultrahigh speed X-ray CT scanner An X-ray CT scanner comprises a plurality of X-ray generators which are arranged radially on a circle concentric with an object for measurement and each consists of a cathode electrode, an anode electrode constituting a target and a grid between the catho... | 09/12/1989 |
| 4866751 | Radiological device of the pivoting type Radiological device of the pivoting type, comprising a fixed base (1), a longitudinal pivoting carriage (2) mounted on the base (1) and carrying, on the one hand longitudinally, a patient support panel (8) connected to the carriage by a patient support pa... | 09/12/1989 |
| 4866749 | X-ray generator selectively providing point- and line-focusing x-rays An X-ray is generated when thermoelectrons emitted from a cathode impinge upon an anode, and the X-ray thus generated is taken out from a window. The cathode has a surface formed with two grooves intersecting at a right angle with each other and two coil ... | 09/12/1989 |
| 4864594 | Bone mineral density measurement In-vivo bone density measuring system using a modified emission computed tomographic gamma camera arrangement for detecting radiation from two separate sources located outside of the body of the patient and oppositely disposed to the gamma camera during r... | 09/05/1989 |
| 4864593 | Method of measuring plasma densities and temperatures An X-ray computed tomography (CT) scanner is used to measure the density of mercury plasma in an operating arc lamp.... | 09/05/1989 |
| 4853948 | X-ray diagnostics installation for optional transillumination or exposure of an examination subject An x-ray diagnostics installation includes an x-ray source, an x-ray image intensifier with a following video chain, a sheet film changer, and a support table for an examination subject. The sheet film changer is mounted on a carriage moveable beneath the... | 08/01/1989 |
| 4852138 | Irradiation cell conveyor system A conveyor is provided for use in an irradiation cell to transport goods to be irradiated past a radiation source panel. The conveyor has a plurality of irradiation conveyor lines parallel to the source panel, which "parallel" lines are independent of eac... | 07/25/1989 |
| 4852136 | Method and device for tightness control of a joint A method and a device for inspecting a joint such as the joint at the rim of a container. Radiant energy is directed into a small area of irradiation on the joint and the container rim is moved relative to the radiant energy so that the area of irradiatio... | 07/25/1989 |
| 4852132 | Method of collecting data for x-ray tomograph The present invention which relates to a method of collecting data which enables exact opposing view data to be obtained as the real data with respect to data on any channel in an X-ray tomograph which uses fan beam X-rays is characterized in that the tim... | 07/25/1989 |
| 4852140 | X-ray tube bearing arc suppressor A structure for suppressing arcing in electric current carrying anti-friction bearings operating in a vacuum environment is disclosed having opposed spaced-apart surfaces forming an effective capacitor in parallel with the bearings responsive to temperatu... | 07/25/1989 |
| 4852143 | Oral X-ray packet cushion and packet embodying the same A cushioned oral X-ray plate packet as well as a cushion for use with an X-ray plate packet are provided. The cushion is made of compressed cellulose sponge material which expands in thickness when moistened. A cushion wrap is also disclosed for controlli... | 07/25/1989 |
| 4845730 | Selective on-line measurement of filler components in paper By applying infra-red radiation as well as beta-radiation measurement techniques combined with a characteristic x-radiation measurement technique using a mono-energetic and stable x-ray source, it is possible to carry out a very accurate selective filler ... | 07/04/1989 |
| 4845733 | Cassette film transport Automatic filmer capable of centering the cassette with respect to an x-ray window and measuring the width and length thereof. Oppositely disposed channels are used to center the cassette about a first center line and measure the width thereof. A gripper ... | 07/04/1989 |
| 4845769 | Annular x-ray inspection system A high energy imaging system provides a "slotted" or "slot-shaped" or "rectangular cross-section" beam of illumination to intercept an annular region of an object of revolution as it is rotated. A detector array is located to intercept the illumination be... | 07/04/1989 |
