Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 8126115 | Method and apparatus of differential pumping in an x-ray tube An x-ray tube includes an anode, a first chamber enclosing the anode and having a first pressure therein, a cathode, and a second chamber enclosing the cathode and having a second pressure therein. A separator is positioned between the first and second chambers and ... | 02/28/2012 |
| 7769139 | X-ray generating method, and X-ray generating apparatus An energy beam is irradiated onto a rotating anticathode so as to heat a portion irradiated by the energy beam under the condition that a vapor pressure at equilibrium state of the portion is set to 0.1 Torr or more, thereby generating an X-ray. The portion irradiat... | 08/03/2010 |
| 7693264 | Antechamber control reducing leak through ferrofluid seals A system for controlling a gas load imposed upon a high vacuum chamber includes a first chamber enclosing a high vacuum and positioned within an ambient environment, a second chamber enclosing a gas and positioned within the ambient environment adjacent to the first... | 04/06/2010 |
| 7660391 | Compact e-beam source for generating X-rays Various novel apparatuses and methods for generating X-rays are disclosed. In some embodiments, for example, an apparatus may be configured and arranged so that, for at least one interception point on a particular portion of a scan path on a surface of a target alon... | 02/09/2010 |
| 7558375 | Stationary cathode in rotating frame x-ray tube An x-ray tube includes a stationary base and a passage therein. The x-ray tube includes an anode frame having an anode positioned adjacent to a first end and having a neck at a second end, the neck extends into the passage, wherein the anode frame is configured to r... | 07/07/2009 |
| 7519158 | Pumping schemes for X-ray tubes with ferrofluid seals A system for mitigating a gas load imposed upon a high vacuum chamber, thereby reducing the overall pressure, includes a device mounted onto a rotating gantry. The device has a first chamber enclosing a high vacuum and a first region in which anode bearings are posi... | 04/14/2009 |
| 7343002 | Bearing assembly A bearing assembly suitable for use in conjunction with x-ray device having a rotating target anode and electron source disposed in an evacuated enclosure. The bearing assembly includes a shaft having a rotor hub to which the anode is mounted. The shaft cooperates w... | 03/11/2008 |
| 7197114 | X-rays emitter and X-ray apparatus and method of manufacturing an X-ray emitter An X-ray emitter and an X-ray apparatus and method of manufacturing an x-ray emitter. The emitter has an anode, a cathode, and a vacuum evacuated body in which the anode and the cathode are placed. The body has an opening and a high-voltage connector placed in the o... | 03/27/2007 |
| 7197115 | Cantilever and straddle x-ray tube configurations for a rotating anode with vacuum transition chambers An imaging tube assembly (11) for a computed tomography (CT) system (10) includes an insert (60) that has a vacuum chamber (72). An anode (58) resides within the vacuum chamber (72) and rotates on a shaft (66) via one... | 03/27/2007 |
| 7164751 | Device for generating X-rays The present invention relates to a device for generating X-rays having a source for emitting electrons, a carrier which is provided with a material which generates X-rays as a result of the incidence of electrons, and a bearing by means of which the carrier is journ... | 01/16/2007 |
| 7158612 | Anode assembly for an x-ray tube A miniature x-ray tube has an anode assembly capable of transmitting x-rays through the anode and over a wide angular range. The anode is in the shape of a cone or truncated cone with an axis on the x-ray tube frame axis, formed of low-Z material with high thermal c... | 01/02/2007 |
| 7123689 | Field emitter X-ray source and system and method thereof In accordance with one embodiment, the present technique provides an X-ray source. The X-ray source includes a field emitter array having a plurality of field emitter elements disposed in a vacuum chamber and configured to emit electrons in the vacuum chamber toward... | 10/17/2006 |
| 7110505 | X-ray source and nondestructive inspector The present invention discloses an X-ray source comprising an X-ray source including a high-voltage applying part for generating an X-ray projecting from a bulb part; a power supply including an insulating block molding therein a voltage generating part for supplyin... | 09/19/2006 |
| 7085353 | X-ray tube The present invention discloses an X-ray tube comprising a vacuum envelope comprising a first tubular part having an X-ray exit window in an opening on a leading end side and an attachment flange on a base end side, and a second tubular part communicating with the i... | 08/01/2006 |
| 7031432 | Miniature x-ray catheter with retractable needles or suction means for positioning at a desired site An x-ray catheter has an x-ray tube having an x-ray source therein and an x-ray transparent window through which x-rays may pass is positioned with retractable needles or suction. The needles, if present, are retractably attached to a hinge which is operatively conn... | 04/18/2006 |
| 7016471 | Miniature X-ray source device A miniature X-ray source device connected to a distal end of a guiding wire for insertion towards a desired location within an animal body for effecting radiation thereby. The X-ray source device at least includes a vacuum tube containing a cathode and an anode spac... | 03/21/2006 |
| 6961407 | Device to detect pressure in an x-ray tube In a method to detect the pressure in an x-ray tube having a cathode of the x-ray tube that is heated with a heater current, and wherein electrons are accelerated between the cathode and an anode by an applied x-ray tube voltage, the heater current is measured, a tu... | 11/01/2005 |
| 6922463 | Thermally high conductive HV connector for a mono-polar CT tube An HV connector for high power X-ray device consists of thermally conductive epoxy, cable terminal, faraday cup, spring-loaded contact, and lead lined housing. The thermally conductive epoxy includes fillers. The epoxy can also be loaded with gravels of similar mate... | 07/26/2005 |
| 6888923 | Assembly for mounting a radiation emitting device, radiation emitting device having such an assembly, and a radiological apparatus having such an assembly and emitting device A bearing assembly for the rotational mounting of a rotary anode of an X-ray emitting device on a support having at least one rolling bearing provided in order to be placed between the rotary anode and the support, the rolling bearing having a rotating ring, a non-r... | 05/03/2005 |
| 6661876 | Mobile miniature X-ray source A mobile, miniature x-ray source includes a low-power consumption cathode element for mobility, and an anode optic creating a field free region to prolong the life of the cathode element. An electric field is applied to an anode and a cathode that are dis... | 12/09/2003 |
| 6570959 | X-ray tube metal frame gettering device A metal frame x-ray tube (1), includes a gettering system (90) which, when activated, provides a layer (147) of gettering material (98) on a grounded conductive portion (72, 74) of a metal frame or envelope (14). The envelope defines an evacuated chamber ... | 05/27/2003 |
| 6563908 | High reliability high voltage device housing system A high voltage device housing assembly includes a housing and a high voltage assembly arranged in combination with an improved insulation system. The high voltage assembly is disposed within the enclosure defined by the housing, and the outer surface of t... | 05/13/2003 |
| 6438206 | Continuously pumped miniature X-ray emitting device and system for in-situ radiation treatment An apparatus and method for in-situ x-ray radiation treatment utilizes different types of miniature energy transducers to emit x-rays. Each type of energy transducer includes a transducer body, a cathode provided at one end of the transducer body, and an ... | 08/20/2002 |
| 6430262 | Dual suspension bearings for x-ray tube A high energy x-ray tube includes an evacuated chamber (12) containing a rotor (34) which rotates an anode (10) through a stream of electrons (A) in order to generate an x-ray beam (B). The rotor includes an outer cylindrical armature (38) made from a the... | 08/06/2002 |
| 6353658 | Miniature x-ray source A miniature x-ray source capable of producing broad spectrum x-ray emission over a wide range of x-ray energies. The miniature x-ray source comprises a compact vacuum tube assembly containing a cathode, an anode, a high voltage feedthru for delivering hig... | 03/05/2002 |
| 6304630 | Method of generating EUV radiation, method of manufacturing a device by means of said radiation, EUV radiation source unit, and lithographic projection apparatus provided with such a radiation source unit A method is described for generating EUV radiation, comprising the steps of: generating a flow (35) of liquid droplets (39); injecting the flow into a source space (33) connected to a vacuum pump (34), and successively irradiating individual droplets (39) with... | 10/16/2001 |
| 6192106 | Field service flashable getter for x-ray tubes An evacuated tube (24) includes an envelope (50) and an electrode (78) in the tube envelope (50). The electrode (78) is electrically connected to conductors (74a, 74b) that extend through the tube envelope (50). A getter (72) is included in the tube envel... | 02/20/2001 |
| 6134300 | Miniature x-ray source A miniature x-ray source utilizing a hot filament cathode. The source has a millimeter scale size and is capable of producing broad spectrum x-ray emission over a wide range of x-ray energies. The miniature source consists of a compact vacuum tube assembl... | 10/17/2000 |
| 6064718 | Field emission tube for a mobile X-ray unit A field emission X-ray tube is provided for use in a mobile X-ray machine. n evacuated ceramic housing having a convoluted interior shape for dissipating sparks surrounds the components of the field emission tube. A cathode and, an anode which emits x-rays... | 05/16/2000 |
| 5898754 | Method and apparatus for making a demountable x-ray tube An end mounting (2) for pivotally mounting a housing (5) of a ram (1) to a structure (3) is formed from a single solid piece of material. The end mounting (2) comprises a mounting block (9) which is secured to the structure (3), an end cap (10) which is s... | 04/27/1999 |
| 5838761 | X-ray tube with getter X-ray tube with an anode and a cathode arranged in a vacuum housing has two getters in the inside of the vacuum housing for bonding free gases. One getter is disposed at a location in the vacuum housing neighboring the anode at which a relatively high tem... | 11/17/1998 |
| 5509045 | X-ray tube having a getter shield and method An x-ray tube (14) has an evacuated envelope (30) in which an anode (32), a cathode (34), and a getter shield (60) are disposed. The shield includes a sleeve (62) and a cap (64). The cap defines an annular groove (70). A getter material (72) is deposited ... | 04/16/1996 |
| 5438605 | Ring tube x-ray source with active vacuum pumping A toroidal x-ray tube housing (A) is composed of multiple sections which are clamped together and sealed by elastomeric gaskets (128). An annular anode (B) is mounted to the housing with coolant passages (12, 14) extending thereadjacent. A rotor (30) is r... | 08/01/1995 |
| 5340122 | Differentially-pumped ferrofluidic seal A ferrofluidic seal arrangement for sealing a high-speed rotary shaft which passes between an environment at atmospheric or high pressure and an environment at high-vacuum is provided, which is especially useful in a high-speed rotating anode apparatus fo... | 08/23/1994 |
| 5265147 | X-ray tube noise reduction using stator mass X-ray tube noise is reduced by coupling the stator mass to the neck section of the glass vacuum tube so that vibrations are dissipated by the stator and not transmitted to the bulk of the vacuum tube. The coupling is accomplished with a non-magnetic seali... | 11/23/1993 |
| 5023897 | Device for generating X-radiation with a plasma source The invention is an improvement in a device for generating X-radiation with a plasma source. In the device, two concentric cylindrical electrodes (11, 12) are separated by an evacuated discharge space (13) filled with low-pressure gas. When the inner elec... | 06/11/1991 |
| 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 |
| 4674109 | Rotating anode x-ray tube device An x-ray tube device with an anode target capable of rotation and a cathode which generates electrons causing them to collide with the target set in a vacuum envelope, and with a shaft which supports and rotates the anode projecting outside the envelope. ... | 06/16/1987 |
| 4670894 | X-ray source employing cold cathode gas discharge tube with collimated beam An X-ray tube has a wide area cold cathode with a graphite felt surface which faces and is spaced from a wide area anode of high atomic number material. A grid is interposed between the two and the anode, grid and cathode are enclosed in an envelope which... | 06/02/1987 |
| 4521902 | Microfocus X-ray system A microfocus type X-ray system in which the electron beam power is generally operated in a milliampere range at a constant power, and the beam is subjected to electromagnetic focusing for selected beam width.... | 06/04/1985 |
