| Patent Number |
Title Of Patent |
Date Issued |
| RE37443 |
Electric powered bicycle |
November 13, 2001 |
| An electric powered bicycle having a dip sensor or switch and/or a gradient sensor or switch. The bicycle has front and rear wheels each rotatably supported by a frame; a chain slung between the wheels and a chainset for transferring manual power to the wheels; an electric motor coupled |
| 7318963 |
Composite chromium plating film and sliding member having the same and method for manufacture th |
January 15, 2008 |
| 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 particles being 1 to 15 |
| 7306233 |
Combined oil control ring |
December 11, 2007 |
| 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 ring body thus ma |
| 7291384 |
Piston ring and thermal spray coating used therein, and method for manufacturing thereof |
November 6, 2007 |
| The piston ring of the present invention comprises a thermal spray coating comprising chromium carbide particles having an average particle size of 5 .mu.m or less, and a matrix metal composed of a Ni--Cr alloy or a Ni--Cr alloy and Ni at least on an outer peripheral surface, said therma |
| 7279227 |
Spraying piston ring |
October 9, 2007 |
| 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 % of graphite, and if necessary, P, |
| 7207571 |
Steel piston ring |
April 24, 2007 |
| 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 0.4 mm or an approximately quarter circular shape having |
| 7156061 |
Valve lifter |
January 2, 2007 |
| 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 length of the scratch o |
| 7052019 |
Piston ring and method of manufacturing the same |
May 30, 2006 |
| 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 thickness of the film |
| 6972162 |
Solid polymer electrolyte fuel cell unit |
December 6, 2005 |
| A low-cost solid polymer electrolyte fuel cell unit including a metal separator is provided. The cell unit has a structure that may have high corrosion resistance and durability. The solid polymer electrolyte fuel cell unit includes a polymer electrolyte membrane, a pair of gas-diffu |
| 6943137 |
Sliding member |
September 13, 2005 |
| 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 portion. A second sliding |
| 6852438 |
Embossed current collector separator for electrochemical fuel cell |
February 8, 2005 |
| 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 polymer layer is dispos |
| 6821497 |
Amorphous hard carbon film, mechanical parts and method for producing amorphous hard carbon film |
November 23, 2004 |
| 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. This film can be |
| 6802883 |
Iron-based sintered alloy for use as valve seat and its production method |
October 12, 2004 |
| 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 solutes and carbides contain |
| 6787014 |
Gas-detecting element and gas-detecting device comprising same |
September 7, 2004 |
| 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 substrate and active |
| 6784419 |
Electromagnetic wave absorber |
August 31, 2004 |
| 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-absorbing body and a base |
| 6773565 |
NOx sensor |
August 10, 2004 |
| 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 gas detection chamber 3, an |
| 6771204 |
Radio wave absorber |
August 3, 2004 |
| 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 base is integrally fo |
| 6673223 |
Gas sensing and oxygen pumping device, and apparatus using the same |
January 6, 2004 |
| 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 electrolyte was formed between |
| 6569266 |
Nitrided steel sliding member having improved wear resistance and fatigue strength |
May 27, 2003 |
| 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. |
| 6551497 |
Measuring NOx concentration |
April 22, 2003 |
| 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 measurement gas, at least one of |
| 6471840 |
Composite sensor |
October 29, 2002 |
| 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 measuring an electromotive force |
| 6413397 |
Nitrogen oxide gas sensor |
July 2, 2002 |
| 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 measuring nitrogen oxide such as |
| 6373425 |
Composite electromagnetic wave absorber and method of fitting the same |
April 16, 2002 |
| 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-purpose resin having a permittiv |
| 6319377 |
Nitrogen oxide sensor |
November 20, 2001 |
| 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 electrode (3a) in a gas chamber (1 |
| 6303011 |
Gas sensor |
October 16, 2001 |
| 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 is active to NOx and oxygen, f |
| 6290828 |
Circuit for measuring oxygen concentration |
September 18, 2001 |
| 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 limited electric current type o |
| 6274016 |
Nitrogen oxide gas sensor |
August 14, 2001 |
| 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 measuring nitrogen oxide such as NO |
| 6270638 |
Pyro-sensor and pyro-control circuit |
August 7, 2001 |
| 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 the resistance ratio of first |
| 6211496 |
Molybdenum disilicide heating element and its production method |
April 3, 2001 |
| The MoSi.sub.2 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-temperature heating is attained by the |
| 6190039 |
Heated type sensor with auxiliary heater in bridge circuit for maintaining constant sensor tempe |
February 20, 2001 |
| 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 and auxiliary heater s are typic |
| 6143165 |
Nox sensor |
November 7, 2000 |
| 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 substance containing said oxides and a |
| 6126902 |
NOx sensor |
October 3, 2000 |
| 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 partition wall of a substrate of ox |
| 6057259 |
Exhaust gas cleaner and method for removing nitrogen oxides |
May 2, 2000 |
| 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 exhaust gas cleaner comprising a |
| 6019881 |
NO.sub.x sensor |
February 1, 2000 |
| The present invention discloses a NO.sub.x 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 element selected from 7a Group or 8 Group, |
| 6008479 |
Molybdenum disilicide ceramic composite infrared radiation source or heating source |
December 28, 1999 |
| 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 .mu.m in thickness formed on the surface thereof which |
| 5974871 |
Tension measuring apparatus and method for piston ring |
November 2, 1999 |
| 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 diameter equal to the inner diameter |
| 5972128 |
Cast iron and piston ring |
October 26, 1999 |
| There is provided a piston ring, which has improved wear resistance and seizure resistance, and which does not abrade the cylinder liner made of flaky-graphite cast iron having a hardness of from HRB 85-95.The composition:C: 3.0-3.5%;Si: 2.2-3.2%;Mn: 0.4-1.0%;P: not more than 0.2%;S: not mor |
| 5965051 |
Ceramic heating element made of molybdenum disilicide and silicon carbide whiskers |
October 12, 1999 |
| A ceramic heating element includes a heat-generating portion 1 formed of a ceramic composite material with 3 to 40 vol. % of silicon carbide (SiC) whiskers and the balance substantially of molybdenum disilicide (MoSi.sub.2), and electrode portions 2a and 2b provided on both ends of t |
| 5935529 |
Exhaust gas cleaner and method for cleaning exhaust gas |
August 10, 1999 |
| An exhaust gas cleaner for removing nitrogen oxides by reduction from an exhaust gas containing nitrogen oxides, sulfur oxides, moisture, unburned or partially burned components and oxygen, a content of oxygen in the exhaust gas being larger than a stoichiometric amount required for |
| 5904203 |
Chill plate and stacked mold |
May 18, 1999 |
| A compact stacked mold is provided by reducing the sand-metal ratio. Cavities (11, 12) are formed on upper and lower sides (13, 14) of a chill plate (10) corresponding to one half of a cam profile, and the upper and lower sides (13, 14) are aligned with parting surfaces of a mold (15). |
| 5897759 |
NO.sub.x sensor |
April 27, 1999 |
| 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 ion conductive solid electrolyte; wherein at least the first electrode is selected from hybrid oxides having perovskite structure expressed by MSn |
| 5892188 |
Porous ferrite wave absorber |
April 6, 1999 |
| A wave absorber is provided which has a wave absorption characteristic of 20 dB in a frequency band of 1 GHz to 20 GHz, is nonflammable, compact and lightweight, and has excellent durability. A porous ferrite is produced as the base material for which is an Ni--Zn type ferrite which has |
| 5885923 |
Exhaust gas cleaner |
March 23, 1999 |
| An exhaust gas cleaner consisting essentially of a first catalyst consisting essentially of a first porous inorganic oxide supporting 1.6-8.7 weight percent of an Ag component, on a metal basis, and a second catalyst consisting essentially of a second porous inorganic oxide supportin |
| 5882607 |
Exhaust gas cleaner and method for cleaning exhaust gas |
March 16, 1999 |
| An exhaust gas cleaner is constituted of an Ag catalyst carrying an Ag component and a base metal catalyst carrying a Cu component and optionally W, V, Mo components, and a noble metal catalyst carrying a noble metal component. The base metal catalyst and the noble metal catalyst may be |
| 5851659 |
Sliding members and a method of preparation thereof |
December 22, 1998 |
| A sliding member, in which the surface of a substrate is coated with a compound containing at least chromium nitride, wherein a columnar crystal structure is present in a tension fracture surface of the coating, the columns being aligned toward the coating surface from the substrate |
| 5836589 |
Sliding member for use with lightweight metal |
November 17, 1998 |
| A sliding member used as a sealing ring for a rotary shaft made of a lightweight aluminum alloy in an automatic transmission instead of a conventional cast iron sealing ring in order to prevent leakage of oil and reduce abrasion of the shaft consists of a PEEK resin composition which |
| 5836374 |
Chill plate and stacked mold |
November 17, 1998 |
| Chill plates are integrated into a cassette to save the time which has been required to rearrange chill plates scattered at the time of output of castings. Each chill plate 1 is formed, on four corners thereof, with cavities 4 and 7 each corresponding to a quarter of a member to be chill |
| 5824621 |
Exhaust gas cleaner |
October 20, 1998 |
| An exhaust gas cleaner being constituted by a first catalyst of a first porous inorganic oxide supporting a silver component in combination with a W component and a second catalyst of a second porous inorganic oxide supporting a Pt component and optionally a W component. The Ag component |
| 5801117 |
Comprising supported silver sulfate or silver chloride or silver with sulfuric acid |
September 1, 1998 |
| Nitrogen oxides are removed from an exhaust gas containing nitrogen oxides and oxygen in an amount larger than its stoichiometric amount relative to unburned components in the exhaust gas, by (i) disposing an exhaust gas cleaner in a flow path of the exhaust gas, the exhaust gas cleaner |
| 5788246 |
Seal device for piston rod |
August 4, 1998 |
| A piston seal device has a combined oil scraping ring that includes a steel annular oil scraping ring body having an M-, I- or H-shaped cross section, and an annular coil spring. The ring body has a cross-sectional cut at one location and includes an upper rail member, a lower rail membe |
