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Tetsuya Hasegawa
Tetsuya Hasegawa, Saitama-Ken JP
| Patent application number | Description | Published |
|---|---|---|
| 20100035082 | INTERNAL GEAR PUMP - There have been demands for transparent electrode materials and magnetic materials, each having a wide range of applications. In view of the situations, a novel functional device and a method for forming an oxide material are provided. A functional device includes an Al | 02-11-2010 |
Tetsuya Hasegawa, Tokorozawa-City JP
| Patent application number | Description | Published |
|---|---|---|
| 20080308833 | Group III nitride-based compound semiconductor light-emitting device - The refractive index of a titanium oxide layer is modified by adding an impurity (e.g., niobium (Nb)) thereto within a range where good electrical conductivity is obtained. The Group III nitride-based compound semiconductor light-emitting device of the invention includes a sapphire substrate, an aluminum nitride (AlN) buffer layer, an n-contact layer, an n-cladding layer, a multiple quantum well layer (emission wavelength: 470 nm), a p-cladding layer, and a p-contact layer. On the p-contact layer is provided a transparent electrode made of niobium titanium oxide and having an embossment. An electrode is provided on the n-contact layer. An electrode pad is provided on a portion of the transparent electrode. Since the transparent electrode is formed from titanium oxide containing 3% niobium, the refractive index with respect to light (wavelength: 470 nm) becomes almost equal to that of the p-contact layer. Thus, the total reflection at the interface between the p-contact layer and the transparent electrode can be avoided to the smallest possible extent. In addition, by virtue of the embossment, light extraction performance is increased by 30%. | 12-18-2008 |
Tetsuya Hasegawa, Anjo-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20110214297 | ENGINE-DRIVEN CUTTER - A handheld engine-driven cutter is provided with a disk blade and a main body that drives the disk blade. The main body comprises a four-stroke engine, an oil supplying opening from which engine oil is supplied, and an oil exhausting opening from which the engine oil is exhausted. In this engine cutter, the oil supplying opening and the oil exhausting opening are both disposed on one side of the main body where one end of a driving axis of the four-stroke engine is located. | 09-08-2011 |
| 20110214298 | ENGINE-DRIVEN CUTTER - A handheld engine-driven cutter is provided with a disk blade and a four-stroke engine that drives the disk blade. By employing the four-stroke engine, exhaustion of unburned gas and fuel consumption can be reduced. The engine cutter is further provided with a filter through which air provided to the four-stroke engine passes, a carburetor that mixes fuel and the air that passed through the filter, and a casing that houses the filter and the carburetor. The filter and the carburetor are arranged to align on a straight line along a direction of flow of the air passing through the filter and the carburetor. | 09-08-2011 |
Tetsuya Hasegawa, Numazu-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20120012587 | LIQUID TANK FOR WORKING MACHINE ENGINE AND LIQUID TANK CAP - A liquid tank cap for a working machine engine is provided. The liquid tank cap opens and closes a filling opening of a tip end portion of a refilling pipe of a liquid tank. The liquid tank cap includes an upper wall that covers the filling opening, a fitting portion that engages with an inner surface of the filling opening and protrudes from the upper wall, and a peripheral wall that covers an outer circumference of the refilling pipe in a state where the liquid tank cap is attached to the filling opening. | 01-19-2012 |
| 20120017865 | LUBRICATING DEVICE FOR FOUR-STROKE ENGINE - A lubricating device for a four-stroke engine is provided that circulates oil while lubricating each part in a valve operating chamber and a crank chamber by supplying the oil to the valve operating chamber and the crank chamber using pressure fluctuation in the crank chamber, the pressure fluctuation being caused by reciprocating motion of a piston. The valve operating chamber is formed by mounting a valve operating chamber cover, and a suction passageway that sucks the oil in the valve operating chamber is provided by forming a groove on an inner surface of the valve operating chamber cover and sealing the groove with a sealing member shaped to fit the groove. | 01-26-2012 |
| 20120060790 | LUBRICATION STRUCTURE FOR FOUR-STROKE ENGINE - A lubrication structure for a four-stroke engine to lubricate driving parts by supplying oil stored in an oil tank provided separately from a crank chamber, using pressure fluctuation in the crank chamber, includes: a first circulating route to supply the oil from the oil tank to the crank chamber and return oil mist generated in the crank chamber to the oil tank; a second circulating route to supply the oil mist from the oil tank to a valve operating mechanism and return to the oil tank; a discharge passageway to discharge blowby gas contained during circulation of the oil from the second circulating route to a combustion chamber; and a partition wall to separate between the crank chamber and the oil tank. A central part of the partition wall is located vertically above a surface of the oil stored in the oil tank even if an engine body is tilted. | 03-15-2012 |
| 20120103720 | ENGINE - An object of the present invention is to provide a muffler mounting structure configured to be able to prevent fastening parts from slackening by reducing the thermal conductivity from an exhaust port to the muffler mounting bosses and an engine including the muffler mounting structure. An engine of the present invention | 05-03-2012 |