Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 8169223 | Ionization vacuum gauge An ionization vacuum gauge includes a cathode, an anode and an ion collector. The anode is surrounding the cathode. The ion collector is surrounding the anode. The cathode, the anode and the ion collector are concentrically aligned and arranged in that order. The an... | 05/01/2012 |
| 8120366 | Cold cathode ionization vacuum gauge with trigger plate To provide a cold cathode ionization vacuum gauge that does not have a complicated structure and can induce discharge in a short time even after the cold cathode ionization vacuum gauge is used for a long time. A cold cathode ionization vacuum gauge has a rod-like a... | 02/21/2012 |
| 7906971 | Molecular shield for an ionizaton vacuum gauge A system for measuring gas density in a vacuum includes a gauge, a housing for containing the gauge, and a magnet secured to an exterior surface of the housing. The magnet is a flexible magnetic strips, and positioned around the exterior surface of the housing. The ... | 03/15/2011 |
| 7847559 | Method and apparatus for shielding feedthrough pin insulators in an ionization gauge operating in harsh environments Shields for feedthrough pin insulators of a hot cathode ionization gauge are provided to increase the operational lifetime of the ionization gauge in harmful process environments. Various shield materials, designs, and configurations may be employed depending on the... | 12/07/2010 |
| 7800376 | Method and device for measuring ultrahigh vacuum A method and a device for measuring ultrahigh vacuum are disclosed. The method includes providing a vacuum cold cathode pressure gauge and varying a voltage on an anode of the pressure cell with pressure in such a way that an ion current flow is maintained substanti... | 09/21/2010 |
| 7795876 | Cold cathode pressure sensor A cold cathode pressure sensor has gastight housing, an anode and a cathode arranged in the housing, and a radiation source directed to the cathode for igniting a cold cathode discharge. The housing has a test gas inlet and is at least partly made of glass. The radi... | 09/14/2010 |
| 7791350 | Ionization vacuum gauge An ionization vacuum gauge includes a linear cathode, an anode, and an ion collector. The linear cathode, the anode, and the ion collector are concentrically aligned and arranged from center to outer, in that order. The linear cathode includes a linear base and a fi... | 09/07/2010 |
| 7768267 | Ionization gauge with a cold electron source An ionization gauge that eliminates a hot cathode or filament, but maintains a level of precision of gas density measurements approaching that of a hot cathode ionization gauge. The ionization gauge includes a collector electrode disposed in an ionization volume, an... | 08/03/2010 |
| 7755363 | Ionization vacuum gauge An ionization vacuum gauge includes a cathode electrode, a gate electrode, and an ion collector. The gate electrode is disposed adjacent to the cathode electrode with a distance therebetween. The ion collector is disposed adjacent to the gate electrode also with a d... | 07/13/2010 |
| 7656165 | Method and apparatus for maintaining emission capabilities of hot cathodes in harsh environments A method and apparatus for operating a multi-hot-cathode ionization gauge is provided to increase the operational lifetime of the ionization gauge in gaseous process environments. In example embodiments, the life of a spare cathode is extended by heating the spare c... | 02/02/2010 |
| 7609067 | Electronic portion of an ion gauge with ion collectors bowed out of plane to form a three dimensional arrangement Embodiments of the present invention pertain to an electronic portion of a MEMs ion gauge with ion collectors bowed out of plane to form a three dimensional arrangement and a method for forming an electronic portion of a MEMs ion gauge with ion collectors bowed out ... | 10/27/2009 |
| 7564246 | Pressure sensor using field emission of carbon nano-tube Disclosed is an ion gage using a carbon nano-tube, more specifically a pressure sensor using a field emission of the carbon nano-tube. An array of carbon nano-tubes is formed on a metallic layer. A first grid is disposed on the array of the carbon nano-tubes. A seco... | 07/21/2009 |
| 7538556 | Spot-type ionizer evaluation method and spot-type ionizer A spot-type DC ionizer placed above a measurement plate of a charge plate monitoring device including a grid using a metal net attached to a nozzle opening. Compressed air is set at a value, and a use distance between the measurement plate and the nozzle opening is ... | 05/26/2009 |
| 7456633 | Apparatus for and method of measuring composition and pressure of the discharged gas from ion gauge using residual gas analyzer Disclosed herein are an apparatus for and method of measuring the composition and the pressure of the discharged gas from an ion gauge by using a residual gas analyzer. In this regard, there are provided a vacuum container 200 divided into a pressure containe... | 11/25/2008 |
| 7456634 | Method and apparatus for shielding feedthrough pin insulators in an ionization gauge operating in harsh environments Shields for feedthrough pin insulators of a hot cathode ionization gauge are provided to increase the operational lifetime of the ionization gauge in harmful process environments. Various shield materials, designs, and configurations may be employed depending on the... | 11/25/2008 |
| 7443169 | Shield arrangement for a vacuum cell A shield arrangement for a vacuum measuring cell has a tubular shield housing encompassing a shield and an exit port for connection to a vacuum measuring cell and a connection opening for the object space to be measured. The shield is between the two openings and is... | 10/28/2008 |
| 7429863 | Method and apparatus for maintaining emission capabilities of hot cathodes in harsh environments A method and apparatus for operating a multi-hot-cathode ionization gauge is provided to increase the operational lifetime of the ionization gauge in gaseous process environments. In example embodiments, the life of a spare cathode is extended by heating the spare c... | 09/30/2008 |
| 7352187 | Vacuum measuring gauge An electron-emitting cathode consists of an electrically conducting emitter layer attached to a side wall which consists of stainless steel and a gate which is fixed at a mall distance inside a concave emitter surface of the emitter layer. The cathode surrounds a re... | 04/01/2008 |
| 7323881 | Process and apparatus for evaluating the degree of vacuum in closed bodies with transparent walls The invention is based on feeding the closed bodies to be evaluated to a station for the application of high voltage for the formation of the arc across the inner space of the body and capturing the arc formed by means of a CCD camera which will compare, adjustably,... | 01/29/2008 |
| 7313966 | Method and apparatus for storing vacuum gauge calibration parameters and measurement data on a vacuum gauge structure A method and apparatus for measuring gas pressure by combining an ionization gauge with at least one other vacuum sensor. Nonvolatile memory coupled to the vacuum gauge contains calibration parameters unique to each individual sensor based on factory calibration. Th... | 01/01/2008 |
| 7295015 | Ionization gauge An ionization gauge for isolating an electron source from gas molecules includes the electron source for generating electrons, a collector electrode for collecting ions formed by the impact between the electrons and gas molecules, and an electron window which isolat... | 11/13/2007 |
| 7253630 | Electro-optical voltage sensor circuit monitoring leakage or loss of vacuum of a vacuum interrupter and vacuum circuit interrupter including the same A vacuum circuit breaker includes a line terminal, a load terminal and a vacuum interrupter having a vacuum envelope containing a fixed contact assembly and a moveable contact assembly moveable between closed and open circuit positions. The fixed contact assembly is... | 08/07/2007 |
| 7173430 | Cold-cathode ionization manometer having a longer service life due to two separate cathodes A cold cathode ionization manometer operating according to the inverse magnetron principle to measure pressures in fine vacuums, high vacuums, and ultrahigh vacuums (preferably between 10−2 Pa and 1 Pa). To reduce the contamination and thus to extend th... | 02/06/2007 |
| 7141983 | Cold cathode device and vacuum gauge using same A cold cathode device (20) includes a grid (24), a cold cathode (21) positioned under the grid, and a shield electrode (26) positioned above and parallel to the grid. A vacuum gauge includes a shell (32), a collector (39), a... | 11/28/2006 |
| 7129708 | Vacuum ionization gauge with high sensitivity A vacuum ionization gauge (30) includes a cathode (31), an anode ring (33), a shield electrode (32), an ion educed electrode (34), a reflector (35) and a collector (36). The cathode is positioned corresponding to a fi... | 10/31/2006 |
| 7098667 | Cold cathode ion gauge A cold cathode ion gauge is provided that is suitable for use in a high vacuum and in the presence of contaminating gases. By decreasing the discharge current and, more precisely, decreasing the charge current density received by the gauge electrodes, and using cert... | 08/29/2006 |
| 7049823 | Ionization vacuum gauge An ionisation vacuum gauge for measuring the residual pressure of a gaseous material remaining in a container (10), more particularly after operation of a vacuum pump comprises an electron-emitting cathode (31) made by exploiting the nanotube technolog... | 05/23/2006 |
| 7030620 | Ionization vacuum gauge The present invention relates to an ionisation vacuum gauge for measuring the residual pressure of a gaseous material remaining in a container (10), more particularly after operation of a vacuum pump. The gauge comprises an electron-emitting cathode (17 | 04/18/2006 |
| 7030619 | Ionization gauge An ionization gauge for isolating an electron source from gas molecules includes the electron source for generating electrons, a collector electrode for collecting ions formed by the impact between the electrons and gas molecules, and an electron window which isolat... | 04/18/2006 |
| 6952102 | Method and apparatus for monitoring vacuum degree of vacuum in vacuum interrupter Detection of degradation of the degree of vacuum in a vacuum interrupter suffers from poor sensibility because of mixed presence of various noises other than that due to discharge resulting from degradation The present invention allows accurate detection of d... | 10/04/2005 |
| 6756785 | Pressure controlled degas system for hot cathode ionization pressure gauges A method operating a hot cathode ionization pressure gauge during electron bombardment and resistance degas operations by controlling the degas power levels as a function of the gauge pressure. In one embodiment, the degas power level is increased and decreased in s... | 06/29/2004 |
| 6754611 | Failure diagnostic system for atmospheric pressure detecting device There is provided a failure diagnostic system for an atmospheric pressure detecting device, which is capable of rationally determining whether that device has failed or not and is capable of improving the diagnostic accuracy. The failure diagnostic system is compris... | 06/22/2004 |
| 6661234 | Failure determining apparatus of gas-insulated electrical appliance A failure determining apparatus for a gas-insulated electrical appliance where the appliance is a cylindrical metal container with a charged conductor, insulating gas, and a plurality of insulating spaces inside for supporting the conductor and partitioni... | 12/09/2003 |
| 6608484 | Diagnostic fuel storage system A diagnostic fuel storage system is provided and includes a pressure sensor configured to monitor pressure at one or more diagnostic points within the system. In accordance with one embodiment of the present invention, a diagnostic fuel storage system is ... | 08/19/2003 |
| 6566884 | Ionization vacuum pressure gauge There is described a vacuum gauge in which an anode grid defines an ionization volume directly into which electrons are injected where they collide with gas molecules and atoms to form ions. A collector electrode is mounted within the ionization volume.... | 05/20/2003 |
| 6529009 | Vacuum switch including vacuum-measurement devices, switchgear using the vacuum switch, and operation method thereof A vacuum switch is composed by installing a vacuum circuit-breaker and a disconnector in different grounded vacuum vessels, respectively, and a vacuum-measurement device is attached to each grounded vacuum vessel. The above vacuum vessel communicates with... | 03/04/2003 |
| 6515482 | Ionization vacuum gauge An ionization vacuum gauge which can stably perform measurements of pressure in the intermediate vacuum to high vacuum regions, that is performed by an ionization-type first measurement element, as well as in the measurement region intrinsic to a second m... | 02/04/2003 |
| 6476612 | Louvered beam stop for lowering x-ray limit of a total pressure gauge In an ionization gauge, the effect of X-rays emitted when a collimated electron beam strikes grid surfaces in the gauge structure is reduced by a louvered beam stop. The louvered beam stop creates shadow regions having no X-rays, thus minimizing the amoun... | 11/05/2002 |
| 6426627 | Vacuum switch including vacuum-measurement devices, switchgear using the vacuum switch, and operation method thereof A vacuum switch is composed by installing a vacuum circuit-breaker and a disconnector in different grounded vacuum vessels, respectively, and a vacuum-measurement device is attached to each grounded vacuum vessel. The above vacuum vessel communicates with... | 07/30/2002 |
| 6285192 | Penning vacuum meter The invention relates to a Penning vacuum meter (1), comprising a cathode and an anode. According to the invention, the cathode (11) consists at least mainly of titanium in order to avoid the detrimental effects of the cathode disintegrating.... | 09/04/2001 |
