Patents by Inventor Toshiharu Kumazawa
Toshiharu Kumazawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5807215Abstract: A free weight unit with a spinning mass element, which comprises a casing for accommodating the spinning mass element in a rotatable manner about a rotation axis, and also accommodating an electric motor for rotationally driving the mass element and a battery for the electric motor. This free weight unit is designed to be used effectively for training, rehabilitating or physical exercising of the human body, and the-casing generally has a relatively large dimension sufficient to accommodate a relatively large mass element, which may be difficult to be gripped directly by hand. In this free weight unit, a certain vector of the precessional output torque is generated due to an input torque applied to the spinning mass element rotating about the rotation axis, by operating a selected one of the two elongated sections of the shiftable member to turn about a certain input axis extending in a direction different from a direction of the rotation axis.Type: GrantFiled: November 11, 1997Date of Patent: September 15, 1998Assignee: Mitsubishi Precision Co., Ltd.Inventors: Takeshi Abe, Toshiharu Kumazawa
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Patent number: 4989468Abstract: A speed indicator for a vehicle transmission wherein the transmission has a driving shaft that extends through a casing of the transmission and which is adapted to drive a pair of speedometer drive gears that are detachably connected to the casing by means of a cover so as to permit changing of the speedometer drive gears to compensate for changes in the diameter of the driving wheel of the vehicle.Type: GrantFiled: July 12, 1985Date of Patent: February 5, 1991Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Toshiharu Kumazawa
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Patent number: 4736809Abstract: An off the road vehicle embodying an improved power unit having a compact transmission assembly comprising a main transmission and an auxiliary transmission. The transmissions are separated by a common partition wall of a major casting of the engine and the change speed transmission are contained within respective cavities formed by the partition and covers affixed to opposite sides of the partition. An improved arrangement is provided for lubricating the auxiliary transmission from the main transmission and for returning the lubricant from the auxiliary transmission to the main transmission. The return is designed so as to maintain a higher level of lubricant in the auxiliary transmission when the engine is running than when it is not running so as to insure good lubrication during running and good drainage when the engine is not running.Type: GrantFiled: July 12, 1985Date of Patent: April 12, 1988Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Toshiharu Kumazawa
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Patent number: 4735105Abstract: An improved driving arrangement for a four wheel off the road vehicle having a combined engine and transmission with the engine output shaft and transmission primary and secondary shafts extending transversely relative to the longitudinal axis of the vehicle. An auxiliary transmission having a pair of driven bevel gears rotating in opposite directions is affixed to the side of the main transmission and embodies a dog clutching arrangement for selectively clutching either of the bevel gears to a drive shaft that drives the rear axle of the vehicle. An interlock arrangement is incorporated so as to prevent shifting of the change speed transmission out of neutral or first gear when the auxiliary transmission is in reverse and for preventing shifting of the auxiliary transmission into reverse except when the change speed transmission is in neutral or low gear. In addition, an overload release device is incorporated in the driving arrangement for protecting the transmission from undue loads.Type: GrantFiled: October 25, 1984Date of Patent: April 5, 1988Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Toshiharu Kumazawa
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Patent number: 4722235Abstract: An off the road vehicle embodying an engine, transmission assembly including a primary change speed transmission and an auxiliary change speed transmission with the engine crankshaft and primary and auxiliary transmission shafts all extending transversely relative to the longitudinal axis of the vehicle. Certain of the transmission driven shafts extend through the respective transmission casings to provide auxiliary power takeoffs.Type: GrantFiled: July 12, 1985Date of Patent: February 2, 1988Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Toshiharu Kumazawa
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Patent number: 4620453Abstract: An improved transmission mechanism for an off the road vehicle including a primary and an auxiliary transmission and a shifting interlock for precluding shifting of the auxiliary transmission into reverse when the primary transmission is in high gear. The interlock includes a simple, single straight link.Type: GrantFiled: July 12, 1985Date of Patent: November 4, 1986Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Toshiharu Kumazawa
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Patent number: 4370004Abstract: A magnetically suspended type momentum ring assembly is comprised of a momentum ring, a non-contact magnetic bearing provided at a peripheral portion of the ring assembly for imparting suspending support in the radial and axial directions to the ring, a drive arrangement means provided at a peripheral portion of the ring for imparting a rotating force to the ring. The non-contact magnetic bearing includes a magnetic suspension arrangement generating a suspendingly supporting force in the radial direction and a magnetic arrangement generating a suspending supporting force in the axial direction.Type: GrantFiled: October 6, 1980Date of Patent: January 25, 1983Assignees: Mitsubishi Precision Co., Ltd., Mitsubishi Electric CorporationInventors: Hiroshi Morikawa, Toshiharu Kumazawa, Hiroshi Takagi
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Patent number: 4247050Abstract: A fluid reflecting member for use in combination with a fluid spouting nozzle element, which member includes a cavity forming portion provided with a circular fluid reflecting cavity toward which a fluid or fluids is spouted from the fluid spouting nozzle element. The cavity forming portion is characterized by being provided with a plurality of axial slots having axially and outwardly inclining slot bottoms whereby a plurality of dispersing streams of the fluid or fluids passing through the axial slots is generated.Type: GrantFiled: April 4, 1979Date of Patent: January 27, 1981Assignee: Mitsubishi Precision Co., Ltd.Inventor: Toshiharu Kumazawa
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Patent number: 4165038Abstract: Disclosed is a device for atomizing and dispersing a fluid in the form of a high speed dispersion filmy stream toward the environment surrounding the device. The device has a hollow cylindrical fluid barrel element in which a fluid, or fluids, under pressure is ejected so as to turn around an axis of the fluid barrel element, and a fluid dispersing round member defining a small dispersing opening between a conically convexed dispersing surface of the dispersing round member and a complementary end face of the fluid barrel element. The fluid dispersing round member is held by a flexible support structure so that the fluid dispersing round member is hydrodynamically drawn toward the fluid barrel.Type: GrantFiled: November 30, 1977Date of Patent: August 21, 1979Assignee: Mitsubishi Precision Co., Ltd.Inventor: Toshiharu Kumazawa
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Patent number: 4112026Abstract: An apparatus for generating bubbles in a liquid is disclosed which has a liquid spouting nozzle element for violently spouting a pressurized liquid, an impact disperser for generating a dispersion stream of the pressurized liquid directed into the liquid surrounding the impact disperser when the spouted pressurized liquid impinges upon the disperser and a gas supplier for supplying and guiding a stream of gas to a region surrounding the impact disperser thereby causing the gas stream to be dragged into the dispersion liquid stream. The gas dragged into the dispersion liquid stream is dispersed in the liquid and converted into fine bubbles.Type: GrantFiled: September 27, 1976Date of Patent: September 5, 1978Assignee: Mitsubishi Precision Co., Ltd.Inventor: Toshiharu Kumazawa
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Patent number: 4103827Abstract: A method of generating mixed and atomized fluids is disclosed in which at least two fluids selected from gases, liquids and powders, are flown through a flow passageway including a first convergent and a subsequent divergent flowing zones, whereby the fluids are subjected to change in pressure, thereby being mixed and atomized. The mixed and atomized fluids are spouted from a second convergent flowing zone at a high speed toward a fluid reflecting means. The spouted mixed fluids collide with the fluid reflecting means and are further mixed with one another and further atomized when the mixed fluids are reflected from the fluid reflecting means. A fluid spouting composite nozzle unit for practicing the method is also disclosed in which a first nozzle has the first convergent flowing zone and the divergent flowing zone, and a second nozzle has the second convergent flowing zone. The fluid reflecting means is disposed on the downstream side of the spouting hole of the second nozzle.Type: GrantFiled: September 22, 1976Date of Patent: August 1, 1978Assignee: Mitsubishi Precision Co., Ltd.Inventor: Toshiharu Kumazawa
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Patent number: 4084934Abstract: A nozzle for mixing a high pressure gas, a liquid fuel and water and finely dividing the latter two is connected in fluid communication with another nozzle facing an impact disperser. The mixture spouted through the latter nozzle collides with the impact disperser to be dispersed into a combustion chamber. A stream adjustment disposed around the second nozzle encircles the disperser to determine an angle at which the finely divided fuel and liquid particles are dispersed in the combustion chamber. Also an apertured paraboloidal surface encircling a nozzle can oppose to a cavity resonator to generate an impulsive wave with a high pressure gas spouted through the nozzle to finely divide liquid particles from that nozzle in the form of an emulsion.Type: GrantFiled: May 30, 1975Date of Patent: April 18, 1978Assignee: Mitsubishi Precision Co., Ltd.Inventor: Toshiharu Kumazawa
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Patent number: 4058481Abstract: A method of eliminating liquid foam appearing on the surface of a liquid tent in a reaction vessel is characterized by employing a liquid particle diffusion device with a liquid ejecting nozzle element and a liquid diffusing element for radially diffusing the liquid circulated from the reaction vessel in the form of liquid particles having kinetic energy. The liquid particles hit and break the foam thereby eliminating the foam.Type: GrantFiled: July 22, 1976Date of Patent: November 15, 1977Assignees: Mitsubishi Precision Co., Ltd., Director-General of the Agency of Industrial Science and TechnologyInventors: Norio Futai, Toshio Murakami, Yoshimasa Takahara, Toshiharu Kumazawa
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Patent number: D445855Type: GrantFiled: July 17, 2000Date of Patent: July 31, 2001Assignee: Mitsubishi Precision Co., Ltd.Inventor: Toshiharu Kumazawa