Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 8123227 | Sliding member A sliding member is characterized in that a sliding surface of the sliding member is coated with an amorphous hard carbon film, and a surface of the amorphous hard carbon film has a ten-point mean roughness of equal to or less than 0.7 micrometers and an initial wea... | 02/28/2012 |
| 7955691 | Hard amorphous carbon film An amorphous hard carbon film comprising a first amorphous carbon layer substantially consists only of carbon formed on a substrate surface and a second amorphous carbon layer substantially consists only of carbon formed on the surface of the first amorphous carbon ... | 06/07/2011 |
| 7797829 | Oil ring, manufacturing method thereof, and piston structure using the oil ring A method of manufacturing an oil ring is disclosed. The oil ring includes an annular oil ring body having a pair of rail portions at its axially upper and lower portions and butt ends, and a coil expander assembled in the inner periphery of the oil ring body. A numb... | 09/21/2010 |
| 7759015 | Separator for fuel cell with austenitic stainless steel substrate A fuel cell separator having excellent corrosion resistance, electric conductivity and durability comprising a substrate made of austenitic stainless steel, and a nitride layer formed on a surface of the substrate in contact with an oxygen electrode or a current col... | 07/20/2010 |
| 7523944 | Seal ring A plurality of first inclined faces (51) are provided on a side face of a seal ring (5) to be distanced away from each other. The first inclined face (51) opens to an inner circumferential face (23) and the side face of the seal ring (... | 04/28/2009 |
| 7438037 | Internal combustion engine and liner installation ring An internal combustion engine includes: a cylinder block having one or more cylinders, a cylinder liner in a tubular shape disposed inside the cylinder; a piston reciprocating inside the cylinder liner and having a top land portion formed of an outer periphery of th... | 10/21/2008 |
| 7318963 | Composite chromium plating film and sliding member having the same and method for manufacture thereof A composite chromium plating film containing hard particles in network-shaped microcracks, a surface-occupying ratio of the microcracks being 10 to 20% by area, a distribution density of the microcracks being 1,200 to 2,500/cm, and the amount of the above hard parti... | 01/15/2008 |
| 7306233 | Combined oil control ring In mounting a combined oil control ring in a ring groove formed in a piston, the combined oil control ring is mounted in a form that an opening between but ends of an oil ring body is widened. In such an operation, it is likely that a coil expander falls off the oil... | 12/11/2007 |
| 7291384 | Piston ring and thermal spray coating used therein, and method for manufacturing thereof The piston ring of the present invention comprises a thermal spray coating comprising chromium carbide particles having an average particle size of 5 μm or less, and a matrix metal composed of a Ni—Cr alloy or a Ni—Cr alloy and Ni at least on an outer periphera... | 11/06/2007 |
| 7279227 | Spraying piston ring A thermal spray coated piston ring having improved initial running-in propery, and having scuffing resistance and wear resistance is provided. The spray coating film (3) of the piston ring (1) contains from 2 to 40 mass % of Sn and from 5 to 50 mass % ... | 10/09/2007 |
| 7207571 | Steel piston ring In a corner portion (2) defined between an outer peripheral surface (4) and a lower-side surface (3) of a steel piston ring (1), a groove (5, 6) having either an approximately quadrangular shape with a length of one side of 0.05 to... | 04/24/2007 |
| 7156061 | Valve lifter A valve lifter, in which an amorphous hard carbon film is coated at least on the surface that slides against a cam, is characterized in that the surface of a base material (substrate) has an arithmetic mean roughness of Ra 0.01 to 0.03 micrometers, and the maximum l... | 01/02/2007 |
| 7052019 | Piston ring and method of manufacturing the same A manufacturing method of a piston ring is developed, wherein the method provides a countermeasure for wear of butt ends of the ion plating film coated piston ring and a countermeasure for breakage of the piston ring and the piston ring manufactured at a low cost. A... | 05/30/2006 |
| 6943137 | Sliding member A first sliding member of the present invention is made of a composition comprising 10-50% by weight of carbon fibers and 2-30% by weight of a thermoplastic elastomer, the balance being substantially a polyphenylene sulfide resin, at least in a sliding surface porti... | 09/13/2005 |
| 6852438 | Embossed current collector separator for electrochemical fuel cell A bipolar current collector separator for a fuel cell composed of a metal plate having flow channels and contact faces that come into contact with electrodes or collectors, wherein a corrosion-resistant layer such as an anodized aluminum layer and a heat-resistant p... | 02/08/2005 |
| 6821497 | Amorphous hard carbon film, mechanical parts and method for producing amorphous hard carbon film An amorphous hard carbon film has low friction coefficient from the beginning of sliding, when the metal oxide is contained in the film. The adhesion of the film to the substrate is also improved due to the low temperature treatment of RF plasma enhanced CVD method.... | 11/23/2004 |
| 6802883 | Iron-based sintered alloy for use as valve seat and its production method An iron-based sintered alloy, which consists of from 0.5 to 5% of Ni, from 0.5 to 4% of Cr, from 0.5 to 2% of C, the balance being Fe and unavoidable impurities, and which has a micro-structure comprising an iron-based matrix containing Ni and a part of Cr as solute... | 10/12/2004 |
| 6787014 | Gas-detecting element and gas-detecting device comprising same A gas-detecting element comprising an oxygen-ion-conductive solid electrolyte substrate, a sensing electrode fixed onto said solid electrolyte substrate and active with a detection object gas and oxygen, and a reference electrode fixed onto said solid electrolyte su... | 09/07/2004 |
| 6784419 | Electromagnetic wave absorber The present invention provides a flame-retardant electromagnetic wave absorber that exhibits excellent formability and electromagnetic wave-absorbing properties, and can be easily assembled and constructed. The electromagnetic wave absorber comprises a wave-absorbin... | 08/31/2004 |
| 6773565 | NOx sensor The present invention discloses a NOx sensor for accurately detecting the total concentration of nitrogen oxides in a measured gas without being affected by interference gases. The sensor comprises a gas treatment chamber 5 arranged at the prior stage of the ... | 08/10/2004 |
| 6771204 | Radio wave absorber A radio wave absorber unit includes two or more molded bodies in a pyramid or wedge shape whose radius at the tip end is from 0.5 mm to 7.5 mm and a base. A radius at the trough between adjacent molded bodies is 7.5 mm or less. A unit including molded bodies and the... | 08/03/2004 |
| 6673223 | Gas sensing and oxygen pumping device, and apparatus using the same The present invention discloses a gas sensing device, an oxygen pumping cell, and a gas detection apparatus using the same for detecting lower ranges of gas concentration with high accuracy and stability. An under layer made of oxygen-ion-conductive solid... | 01/06/2004 |
| 6569266 | Nitrided steel sliding member having improved wear resistance and fatigue strength The steel for nitriding consists of 0.5 to 1.0% of C, 1.0% or less of Si, 0.3 to 1.0% of Mn, 5.0 to 12.0% of Cr, 0.5 to 2.0% of Mo, 0.1 to 0.3% of V, the balance being Fe and exhibits improved wear-resistance and fatigue-strength.... | 05/27/2003 |
| 6551497 | Measuring NOx concentration A gas sensor for measuring concentration of a gas component in a measured gas, including a solid electrolytic substrate and at least two electrodes fixed to the substrate. At least a first electrode of the electrodes is disposed in the environment of the ... | 04/22/2003 |
| 6471840 | Composite sensor A combined gas sensor of the invention is equipped with a second oxygen sensing electrode 5 active only to oxygen, which is disposed on a solid electrolyte substrate 3a such that it is directly exposed to detection gases. Sensor disorder is detected by me... | 10/29/2002 |
| 6413397 | Nitrogen oxide gas sensor A nitrogen oxide gas sensor wherein an alloy electrode of platinum and rhodium or a cermet electrode of platinum, rhodium, and zirconia or of a rhodium alloy and zirconia is used as the gas sensing electrode. The electrode of the sensor is suitable for me... | 07/02/2002 |
| 6373425 | Composite electromagnetic wave absorber and method of fitting the same A composite electromagnetic wave absorber capable of restricting the height of a pyramidal electromagnetic wave absorber and being applied to a compact anechoic chamber, wherein an upper absorber (3) is fabricated by dispersing ferrite powder in a general... | 04/16/2002 |
| 6319377 | Nitrogen oxide sensor A nitrogen oxide sensor enabled to enhance the measurement concentration of a total of nitrogen oxides by oxidizing or reducing the nitrogen oxides on the surfaces of electrodes in addition to the control of an oxygen concentration by an oxygen pump. An e... | 11/20/2001 |
| 6303011 | Gas sensor A nitrogen oxide sensor includes a solid electrolytic substrate exhibiting oxygen ion conductivity, a noble-metal reference electrode, which is active only to oxygen, formed on one side of the solid electrolytic substrate, and a sensing electrode, which i... | 10/16/2001 |
| 6290828 | Circuit for measuring oxygen concentration A rush current to an oxygen sensor is restricted to very small to secure the high reliability of oxygen sensor. A non-inverting input of an amplifier 30 is grounded. A resistor 31 is connected between an inverting input and an output of said amplifier 30. A ... | 09/18/2001 |
| 6274016 | Nitrogen oxide gas sensor A nitrogen oxide gas sensor wherein an alloy electrode of platinum and rhodium or a cermet electrode of platinum, rhodium, and zirconia or of a rhodium alloy and zirconia is used as the gas sensing electrode. The electrode of the sensor is suitable for measuri... | 08/14/2001 |
| 6270638 | Pyro-sensor and pyro-control circuit A main heater consisting of first and second fever areas and auxiliary heater arranged on an insulator substrate to maintain a precise sensing temperature. Grounded first fever area is contiguous with second fever area and grounded auxiliary heater, with ... | 08/07/2001 |
| 6211496 | Molybdenum disilicide heating element and its production method The MoSi2 heating element has not been so resistant under the low-temperature heating, because the low-temperature oxidation, which is attributable to the grain boundary oxidation, occurred. In the present invention, long life under the low-tem... | 04/03/2001 |
| 6190039 | Heated type sensor with auxiliary heater in bridge circuit for maintaining constant sensor temperature A main heater, auxiliary heater and guard heater arranged on an insulator substrate to absorb leakage current, thereby maintaining precise sensing temperature. The main heater is parallel with a bridge circuit containing the auxiliary heater, and the main... | 02/20/2001 |
| 6143165 | Nox sensor The present invention discloses a NOx sensor consisting of at least a pair of electrodes formed in touch with an ion conductive solid electrolyte; wherein the first electrode is composed of oxides of a metal (Cr, Mo or W) selected from 6a Group or a subst... | 11/07/2000 |
| 6126902 | NOx sensor A stable sensor designed to detect accurately the total NOx concentration under 100 ppm in terms of the NO gas concentration is made up of a first cell and a second cell with a gas diffusion aperture provided between the two cells. The first cell has a pa... | 10/03/2000 |
| 6057259 | Exhaust gas cleaner and method for removing nitrogen oxides Nitrogen oxides are removed from an exhaust gas containing nitrogen oxides and oxygen in a proportion larger than its stoichiometric proportion relative to unburned components in the exhaust gas, by (i) disposing an exhaust gas cleaner in a flow path, the... | 05/02/2000 |
| 6019881 | NOx sensor The present invention discloses a NOx sensor consisting at least of a pair of the first and the second electrodes formed in touch with an oxygen conductive solid electrolyte; wherein at least the first elelctrode is composed of oxides of an ele... | 02/01/2000 |
| 6008479 | Molybdenum disilicide ceramic composite infrared radiation source or heating source In an infrared radiation source containing hot-pressed molybdenum disilicide reinforced with silicon carbide whiskers as the illuminant thereof, terminal portions of the illuminant having a protective dense silica film of 5 to 20 μm in thickness formed o... | 12/28/1999 |
| 5974871 | Tension measuring apparatus and method for piston ring An impact and a vibration are applied to a portion of a piston ring on which a belt body is wound, and a vibration is also applied to the belt body. A position where a desired tension can be obtained is obtained by using a master gauge having an outer dia... | 11/02/1999 |
