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| Number | Title | Issue Date |
| 4822415 | Thermal spray iron alloy powder containing molybdenum, copper and boron A novel iron based alloy is disclosed which is characterized by high resistance to wear and corrosion. The alloy consists essentially of 0 to 40% chromium, 1 to 40% molybdenum, 1 to 15% copper, 0.2 to 5% boron, and 0.01 to 2% carbon; the balance being inc... | 04/18/1989 |
| 4820900 | Vacuum plasma spray system with sealed manipulator A vacuum plasma spray system includes a spray chamber, a motor-driven manipulator including a drive mechanism and a respective control system, and a plasma gun mounted on the manipulator in the spray chamber. The drive mechanism comprises three drive grou... | 04/11/1989 |
| 4810880 | Direct imaging monochromatic electron microscope A direct-imaging, monochromatic electron microscope includes an objective lens for collecting a substantial portion of emitted electrons from an area across a sample surface, a first transfer lens for collimating the electrons into beams, an energy filter... | 03/07/1989 |
| 4806754 | High luminosity spherical analyzer for charged particles An energy analyzer for electrons comprises three spherically configured cylindrically symmetric members. An outer member is a hollow spherical section having a first inlet edge. A first inner member is a spherical portion disposed concentrically within th... | 02/21/1989 |
| 4795300 | Loading apparatus for a work chamber An apparatus for loading workpieces without exposure of a work chamber to the atmosphere comprises a transfer chamber formed in part by an inner plate section which serves as a cover plate with an inner port therethrough to the work chamber. An entry plat... | 01/03/1989 |
| 4795614 | Apparatus for analysis of organic material A predetermined volume of a gaseous mixture of combustion products component is collected in a gas mixer up to a preselected pressure. A portion of the mixture is discharged successively through the tubular column and a sample chamber for a predetermined ... | 01/03/1989 |
| 4793712 | Gas mixer Described is a gas mixer preferentially employed for mixing at least two gas flows. The gas mixer comprises a first filter adapted to have a first gas flow directed therethrough from a first surface to a second surface thereof. A second gas flow is direct... | 12/27/1988 |
| 4788408 | Arc device with adjustable cathode An arc plasma generating system includes components for adjusting spacing between the cathode and the anode. A piston affixed to the cathode is slidingly positioned in a cylinder partitioning therein a first chamber and a second chamber. The first chamber... | 11/29/1988 |
| 4780591 | Plasma gun with adjustable cathode A plasma generating system comprises a plasma gun including a hollow cylindrical anode member, a hollow cylindrical intermediate member electrically isolated from and juxtaposed coaxially with the anode member to form a plasma-forming gas passage through ... | 10/25/1988 |
| 4766287 | Inductively coupled plasma torch with adjustable sample injector An induction plasma system comprises a torch and an induction coil. A sample substance is injected into the plasma at an axial position that is adjustable while the plasma is being energized. The plasma-forming gas flows through the induction coil prior t... | 08/23/1988 |
| 4741974 | Composite wire for wear resistant coatings A composite wire useful for arc gun spraying is formed of an alloy sheath comprising iron, nickel, or cobalt, and a core comprising boron-containing powder of boron and/or boron carbide sufficiently fine in size such that the boron is substantially dissol... | 05/03/1988 |
| 4737639 | Energy and analysis detection system for surface chemical analysis The present invention is directed to an energy analysis and detection system for surface chemical analysis which includes an input lens system for receiving charged particles, said lens system having a first lens stage for definition of analysis area and ... | 04/12/1988 |
| 4732108 | Apparatus for monitoring epitaxial growth The present invention is directed to apparatus for monitoring epitaxial crystalline growth mounted in a vacuum chamber, said apparatus including a support for mounting a single crystal substrate surface, a device for applying epitaxial material to the sub... | 03/22/1988 |
| 4730499 | Measurement of flow rate of powder from a hopper In a system and a method for measuring the rate at which powdered material flows from a container wherein a first analog signal representing the weight of the container is produced, the analog signal is differentiated to obtain a second signal correspondi... | 03/15/1988 |
| 4725508 | Composite hard chromium compounds for thermal spraying A thermal spray material has been developed that includes a composite powder comprising chromium carbide or chromium boride and copper or copper alloy in the form of kernels of the chromium carbide or boride clad with the copper or copper alloy. Preferabl... | 02/16/1988 |
| 4692305 | Corrosion and wear resistant alloy A novel alloy is disclosed which is characterized by high resistance to wear and corrosion. The alloy consists essentially of 2 to 25% chromium, 5 to 30% molybdenum, 3 to 15% tungsten, 2 to 8% copper, 2 to 8% boron, and 0.2 to 2% carbon; the balance being... | 09/08/1987 |
| 4688722 | Nozzle assembly for plasma spray gun A nozzle assembly for a plasma gun is disclosed, containing an annular coolant passage for extended nozzle life, providing for convenient and low cost replacement of the nozzle member and for improved gun operation. To form the assembly a jacket is dispos... | 08/25/1987 |
| 4675302 | Low expansion ceramic material A low expansion ceramic composition is represented by the formula Ca0.5 Ti2 P3 O12 in which up to 100 percent of the Ca is replaced by one or more of the other alkaline earth metals and alkali metals, the alkali... | 06/23/1987 |
| 4674683 | Plasma flame spray gun method and apparatus with adjustable ratio of radial and tangential plasma gas flow A plasma gun has a hollow generally cylindrical anode nozzle member and coaxially disposed therein a cylindrical cathode member, the members co-acting to form an interior passage for plasma forming gas. At one end, within the body of the gun, the passage ... | 06/23/1987 |
| 4668852 | Arc spray system An arc spray gun has a generally frusto-conical head member of electrically insulating material, with the small end facing forwardly in the direction of spray. Wire is fed through a pair of electrically conductive tubular wire guides containing pressure c... | 05/26/1987 |
| 4659899 | Vacuum-compatible air-cooled plasma device A plasma generating device, and in particular a duoplasmatron ion gun, is disclosed that is air cooled, high vacuum compatible and hence very clean with a stable ion current output. The device is mounted to a standard type flange held at ground potential ... | 04/21/1987 |
| 4649257 | Gas distribution ring for plasma gun A gas distribution ring for a plasma gun comprises a ring member with two sets of gas inlet orifices extending from the outer surface inwardly through the ring member. The outer surface has an undulated groove for an O-ring formed therein, and the orifice... | 03/10/1987 |
| 4647201 | Atomic absorption spectrophotometer with improved drain trap interlock The interlock assures that the end of a drain trap entrance pipe is covered with liquid. The system includes a control circuit with a circuit element which changes impedance with temperature changes. The circuit element is arranged to be thermally coupled... | 03/03/1987 |
| 4645716 | Flame spray material A flame spray material for producing a thermally shock and erosion resistant ceramic coating is comprised of a homogeneous ceramic composition formed of zirconium oxide, yttrium oxide and titanium oxide. The composition is preferably in the form of compos... | 02/24/1987 |
| 4643571 | Current control system for spectrophotometers It has been shown that the use of a shutter to cut off the light beam entering the optical system of a fluoresence spectrophotometer will reduce UV deterioration of the components in the optical system. This invention discloses how control of the output o... | 02/17/1987 |
| 4640627 | Apparatus for monitoring a plasma torch An apparatus for monitoring a plasma torch includes a dedicated photometer which produces a signal representative of the temperature of a quartz tube of the torch, which signal can be used to reduce the temperature thereof.... | 02/03/1987 |
| 4636944 | Multi-level priority micro-interrupt controller A multi-level priority micro-interrupt controller for a micro-program controlled computer handles a plurality of interrupt signals at a plurality of levels of priority, wherein only one interrupt signal for each level of priority may be active at any mome... | 01/13/1987 |
| 4633078 | Optical interference eliminator Wavelength related interference artifacts may appear superimposed on the output data curve of a scanning spectrophotometer utilizing a photodiode array as photometric detector. These may be suppressed by interposing a transparent optical element in the op... | 12/30/1986 |
| 4629940 | Plasma emission source An impedance matching network for continuously and automatically maximizing RF power transfer to a plasma emission torch includes a dual phase detector network. Signals from the detector network control, via a control unit, a variable impedance network.... | 12/16/1986 |
| 4625296 | Memory refresh circuit with varying system transparency A memory refresh circuit controls the refreshing of dynamic RAM included in a system wherein a control store outputs micro-code instructions to control the system operation in response to sequences specified by a sequence and interrupt logic circuit (SIL)... | 11/25/1986 |
| 4621899 | Assembly for positioning an optical element An assembly for positioning an optical element, includes a frame member having a base member affixed thereto, which base member carries an optical element rigidly affixed thereon. The base member is mounted to the frame member via a plurality of tilting m... | 11/11/1986 |
| 4618935 | Liquid chromatography controller A new and improved controller for creating a linear gradient dual solvent flow pattern in a dual pump liquid chromatography system wherein one pump pumps one solvent and the other pump pumps the second solvent, the controller comprising a clock for produc... | 10/21/1986 |
| 4616210 | Spectrophotometers In a spectrophotometer having an optical beam chopped into dark and light segments, a computer controlled system is described for determining background signal due to stray light, photomultiplier dark current, offsets of photometric amplifiers and other c... | 10/07/1986 |
| 4599270 | Zirconium oxide powder containing cerium oxide and yttrium oxide A flame spray material for producing a low thermal conductivity ceramic coating is comprised of a homogeneous ceramic composition formed of zirconium oxide, cerium oxide and yttrium oxide. The composition is preferably in the form of composite particles e... | 07/08/1986 |
| 4597034 | Self sprung lamp holder A self sprung holder device for a hollow cathode lamp of the type useful as a spectral radiation source for atomic absorption spectrometers. The holder is constructed from a sheet of flexible material bent along two lines to form an elongate tapered trian... | 06/24/1986 |
| 4593007 | Aluminum and silica clad refractory oxide thermal spray powder A thermal spray powder comprising particles with a central core of a material selected from the group consisting of zirconium oxide, magnesium oxide, hafnium oxide, cerium oxide, yttrium oxide and combinations thereof. The core then has discrete aluminum ... | 06/03/1986 |
| 4587014 | Liquid chromatography column assembly A liquid chromatography column assembly includes a separation column having stationary phase retaining frits is positioned within a housing adapted to accept conventional column termination fittings. The assembly includes a sealed cylindrical cavity to en... | 05/06/1986 |
| 4578114 | Aluminum and yttrium oxide coated thermal spray powder A thermal spray composite is disclosed, comprised of a base constituent formed from at least one of the metals nickel, iron, cobalt and chromium, plus additional constituents comprising aluminum and yttrium oxide. Optionally, the base constituent addition... | 03/25/1986 |
| 4578115 | Aluminum and cobalt coated thermal spray powder A thermal spray composite is disclosed, comprised of a base constituent formed from at least one of the base metals nickel, iron and cobalt, and at least one of the modifying elements chromium and aluminum, plus individual constituents aluminum, cobalt an... | 03/25/1986 |
| 4571172 | System for changing oxidants in a flame atomic absorption spectrophotometer A flame atomic absorption spectrophotometer burner apparatus for burning a fuel such as acetylene as one essential gas in the oxidant such as nitrous oxide as another essential gas includes a system for safely changing oxidants between air and nitrous oxi... | 02/18/1986 |
