Patents by Inventor Masao Takagi
Masao Takagi 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: 7337866Abstract: A work vehicle includes an engine, a PTO shaft driven by power from the engine, an operator's seat, an operator's presence sensor for detecting presence/absence of an operator at the operator's seat, and an automatic engine stop unit operable to automatically stop the engine in response to detection of the operator's absence at the operator's seat. The work vehicle includes a utility member for the vehicle selectively movable between a use position and a non-use position, a non-use state detecting sensor for detecting movement of the utility member to the non-use position, and an override unit operable to override the automatic engine stop function of the automatic engine stop unit, the override unit providing an override signal to the automatic engine stop unit in response to detection by the non-use state detecting sensor of the movement of the utility member to the non-use position.Type: GrantFiled: January 4, 2006Date of Patent: March 4, 2008Assignee: Kubota CorporationInventors: Keishiro Nishi, Masao Takagi, Satoshi Machida, Kenji Kato, Masashi Osuga
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Patent number: 7212776Abstract: A fixing belt for fixing the toner image on a recording medium includes an electroformed nickel endless belt body. The belt body exhibits hardness higher at the rear surface than at the front surface after heated at 350° C.Type: GrantFiled: October 13, 2004Date of Patent: May 1, 2007Assignee: Nitto Kogyo Co., Ltd.Inventors: Masao Takagi, Goki Inukai
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Publication number: 20060113139Abstract: A work vehicle includes an engine, a PTO shaft driven by power from the engine, an operator's seat, an operator's presence sensor for detecting presence/absence of an operator at the operator's seat, and an automatic engine stop unit operable to automatically stop the engine in response to detection of the operator's absence at the operator's seat. The work vehicle includes a utility member for the vehicle selectively movable between a use position and a non-use position, a non-use state detecting sensor for detecting movement of the utility member to the non-use position, and an override unit operable to override the automatic engine stop function of the automatic engine stop unit, the override unit providing an override signal to the automatic engine stop unit in response to detection by the non-use state detecting sensor of the movement of the utility member to the non-use position.Type: ApplicationFiled: January 4, 2006Publication date: June 1, 2006Inventors: Keishiro Nishi, Masao Takagi, Satoshi Machida, Kenji Kato, Masashi Osuga
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Patent number: 7022417Abstract: A metal belt of the present invention is formed to be endless by electroforming, has a crystal orientation in which a crystal orientation ratio I(200)/I(111) is not less than 80 and not more than 250, mainly contains nickel, and has an excellent durability.Type: GrantFiled: November 17, 2003Date of Patent: April 4, 2006Assignee: Nitto Kogyo Co., Ltd.Inventors: Masao Takagi, Goki Inukai
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Patent number: 7007768Abstract: A work vehicle has an engine (1), a PTO shaft (6, 7) driven by power from the engine, an operator's seat (19), an operator's presence sensor (26) for detecting presence/absence of an operator at the operator's seat, and an automatic engine stop unit (39) operable to automatically stop the engine in response to detection of the operator's absence at the operator's seat. The work vehicle includes a utility member (A) for the vehicle selectively movable between a use position and a non-use position, a non-use state detecting sensor (27) for detecting movement of the utility member to the non-use position, and an override unit (40) operable to override the automatic engine stop function of the automatic engine stop unit, the override unit providing an override signal to the automatic engine stop unit in response to detection by the non-use state detecting sensor of the movement of the utility member to the non-use position.Type: GrantFiled: March 25, 2003Date of Patent: March 7, 2006Assignee: Kubota CorporationInventors: Keishiro Nishi, Masao Takagi, Satoshi Machida, Kenji Kato, Masashi Osuga
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Publication number: 20050142351Abstract: A fixing belt for fixing a toner image on a transfer medium is provided with an-endless belt body formed of electroformed nickel composed of crystallites oriented on crystal orientation planes. With respect to those crystallites on the crystal plain which have average grain diameter greatly changed by heating, a change ratio of average grain diameter after heating at 250° C. for 2 hours is not larger than 110% based on average grain diameter before heating.Type: ApplicationFiled: December 21, 2004Publication date: June 30, 2005Applicant: NITTO KOGYO CO., LTDInventors: Masao Takagi, Goki Inukai
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Publication number: 20050084303Abstract: A fixing belt for fixing the toner image on a recording medium includes an electroformed nickel endless belt body. The belt body exhibits hardness higher at the rear surface than at the front surface after heated at 350° C.Type: ApplicationFiled: October 13, 2004Publication date: April 21, 2005Applicant: NITTO KOGYO CO., LTD.Inventors: Masao Takagi, Goki Inukai
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Patent number: 6792237Abstract: The present invention provides a fixing belt adapted to move circularly and cooperate with a pressing member to form a nip region for fixing an unfixed toner image on a recording medium, capable of achieving a desirably enhanced durability even under high-temperature atmosphere. The fixing belt comprises a substrate formed of an endless-shaped electroformed sheet consisting essentially of a nickel-carbon alloy containing 0.05 to 0.12 mass % of carbon. The carbon content may be adjusted in proportion to the amount of a secondary brightening agent to be added to an electrolytic bath or to a cathode current density to be sent to the electrolytic bath. The secondary brightening agent may be 2-butyne-1,4-diol. In the fixing belt of the present invention, the substrate may have a surface provided with a releasing layer which may be formed as a single layer or multilayer made of a material having heat resistance and non-adhesive, such as silicone rubber, fluorine rubber, fluororesin, or their mixture.Type: GrantFiled: April 11, 2003Date of Patent: September 14, 2004Assignee: Nitto Koygo Co., Ltd.Inventors: Masao Takagi, Goki Inukai
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Publication number: 20040105996Abstract: A metal belt of the present invention is formed to be endless by electroforming, has a crystal orientation in which a crystal orientation ratio I(200)/I(111) is not less than 80 and not more than 250, mainly contains nickel, and has an excellent durability.Type: ApplicationFiled: November 17, 2003Publication date: June 3, 2004Applicant: NITTO KOGYO CO., LTD.Inventors: Masao Takagi, Goki Inukai
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Publication number: 20040026150Abstract: A work vehicle has an engine (1), a PTO shaft (6, 7) driven by power from the engine, an operator's seat (19), an operator's presence sensor (26) for detecting presence/absence of an operator at the operator's seat, and an automatic engine stop unit (39) operable to automatically stop the engine in response to detection of the operator's absence at the operator's seat. The work vehicle includes a utility member (A) for the vehicle selectively movable between a use position and a non-use position, a non-use state detecting sensor (27) for detecting movement of the utility member to the non-use position, and an override unit (40) operable to override the automatic engine stop function of the automatic engine stop unit, the override unit providing an override signal to the automatic engine stop unit in response to detection by the non-use state detecting sensor of the movement of the utility member to the non-use position.Type: ApplicationFiled: March 25, 2003Publication date: February 12, 2004Applicant: KUBOTA CORPORATIONInventors: Keishiro Nishi, Masao Takagi, Satoshi Machida, Kenji Kato, Masashi Osuga
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Patent number: 6647238Abstract: The present invention provides a fixing belt adapted to move circularly and cooperate with a pressing member to form a nip region for fixing an unfixed toner image on a recording medium, capable of achieving a desirably enhanced durability even under high-temperature atmosphere. The fixing belt comprises a substrate formed of an endless-shaped electroformed sheet consisting of a nickel-carbon alloy containing 0.05 to 0.12 mass % of carbon. The carbon content may be adjusted in proportion to the amount of a secondary brightening agent to be added to an electrolytic bath or to a cathode current density to be sent to the electrolytic bath. The secondary brightening agent may be 2-butyne-1,4-diol. In the fixing belt of the present invention, the substrate may have a surface provided with a releasing layer which may be formed as a single layer or multilayer made of a material having heat resistance and non-adhesive, such as silicone rubber, fluorine rubber, fluororesin, or their mixture.Type: GrantFiled: August 7, 2002Date of Patent: November 11, 2003Assignee: Nitto Kogyo Co., Ltd.Inventors: Masao Takagi, Goki Inukai
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Publication number: 20030185606Abstract: The present invention provides a fixing belt adapted to move circularly and cooperate with a pressing member to form a nip region for fixing an unfixed toner image on a recording medium, capable of achieving a desirably enhanced durability even under high-temperature atmosphere. The fixing belt comprises a substrate formed of an endless-shaped electroformed sheet consisting essentially of a nickel-carbon alloy containing 0.05 to 0.12 mass % of carbon. The carbon content may be adjusted in proportion to the amount of a secondary brightening agent to be added to an electrolytic bath or to a cathode current density to be sent to the electrolytic bath. The secondary brightening agent may be 2-butyne-1,4-diol. In the fixing belt of the present invention, the substrate may have a surface provided with a releasing layer which may be formed as a single layer or multilayer made of a material having heat resistance and non-adhesive, such as silicone rubber, fluorine rubber, fluororesin, or their mixture.Type: ApplicationFiled: April 11, 2003Publication date: October 2, 2003Applicant: NITTO KOGYO CO., LTD.Inventors: Masao Takagi, Goki Inukai
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Publication number: 20030185603Abstract: The present invention provides a fixing belt adapted to move circularly and cooperate with a pressing member to form a nip region for fixing an unfixed toner image on a recording medium, capable of achieving a desirably enhanced durability even under high-temperature atmosphere. The fixing belt comprises a substrate formed of an endless-shaped electroformed sheet consisting of a nickel-carbon alloy containing 0.05 to 0.12 mass % of carbon. The carbon content may be adjusted in proportion to the amount of a secondary brightening agent to be added to an electrolytic bath or to a cathode current density to be sent to the electrolytic bath. The secondary brightening agent may be 2-butyne-1,4-diol. In the fixing belt of the present invention, the substrate may have a surface provided with a releasing layer which may be formed as a single layer or multilayer made of a material having heat resistance and non-adhesive, such as silicone rubber, fluorine rubber, fluororesin, or their mixture.Type: ApplicationFiled: August 7, 2002Publication date: October 2, 2003Applicant: NITTO KOGYO CO., LTD.Inventors: Masao Takagi, Goki Inukai
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Patent number: 6446521Abstract: A tractor transmission includes a change speed mechanism, a shift lever (30) for shifting the change speed mechanism, a super-reduction mechanism (16) for decelerating and outputting power inputted thereto, the super-reduction mechanism having a larger reduction ratio than the change speed mechanism, and an overdrive mechanism (45) for accelerating and outputting power inputted thereto. A single switching device (29) is provided for operating both the super-reduction mechanism and overdrive mechanism. The switching device is shiftable, when the super-reduction mechanism is in neutral, from a state of operating the super-reduction mechanism to a state of operating the overdrive mechanism.Type: GrantFiled: August 31, 2000Date of Patent: September 10, 2002Assignee: Kubota CorporationInventors: Masaaki Hama, Kenji Kato, Isamu Yamanishi, Masao Takagi
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Patent number: 6138528Abstract: A propelling transmission for an agricultural tractor includes a main change speed mechanism, an auxiliary change speed mechanism, and a high/low change speed mechanism for providing two, high and low, speeds with a smaller transmission ratio than a transmission ratio between speed stages of the main change speed mechanism. The main change speed mechanism, auxiliary change speed mechanism and high/low change speed mechanism are arranged in series. Speeds in a low-speed range for an operational run among speeds provided by the main change speed mechanism and auxiliary change speed mechanism are combined with the two speeds provided by the high/low change speed mechanism.Type: GrantFiled: September 10, 1999Date of Patent: October 31, 2000Assignee: Kubota CorporationInventors: Toshiya Fukumoto, Masao Takagi
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Patent number: 5437355Abstract: A friction clutch mounted in a transmission case (25) or the like and connected between a drive shaft (14) for receiving engine power and a driven shaft (15) for receiving power from the drive shaft and transmitting the power to a power takeoff shaft (11). The friction clutch includes a first sleeve (17) connected to the drive shaft, a second sleeve (16) connected to the driven shaft, friction disks (18, 19) disposed between the first sleeve and the second sleeve, the friction disks being switchable between a clutch engaging state to enable power transmission between the first sleeve and the second sleeve, and a clutch disengaging state to disable the power transmission, and a clutch piston (20) movable between a first position to place the friction disks in the clutch engaging state, and a second position to place the friction disks in the clutch disengaging state.Type: GrantFiled: October 8, 1993Date of Patent: August 1, 1995Assignee: Kubota CorporationInventors: Masao Takagi, Satoshi Machida, Akio Hattori
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Patent number: 4824128Abstract: A transmission for a tractor comprising a power takeoff line change speed gear mechanism, propelling line change speed gear mechanisms and a backward and forward drive switching mechanism. The propelling line change speed gear mechanisms include a main change speed mechanism, an auxiliary change speed mechanism and a front wheel change speed mechanism. The power takeoff line change speed mechanism, and the main and auxiliary change speed mechanisms somewhat encircle a longitudinal center line transversely of the transmission. The backward and forward drive switching mechanism and the front wheel change speed mechansim are juxtaposed in a region immediately forwardly of the change speed machanisms B, C and E.Type: GrantFiled: April 29, 1987Date of Patent: April 25, 1989Assignee: Kubota, Ltd.Inventors: Masao Takagi, Masayoshi Miyahara, Nobuyuki Toshikuni
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Patent number: 4804056Abstract: A frame type tractor comprising an engine mounted on a forward region of a body frame, and a transmission mounted on a rear region of the body frame and operatively connected to the engine through a transmission shaft. The transmission consists of an input section, a change speed section and an output section. The input section includes an input shaft connected to the transmission shaft, a wet type multidisk clutch for establishing and breaking transmission of a engine drive received from the input shaft, and an oil pump driven by the input shaft.Type: GrantFiled: October 21, 1987Date of Patent: February 14, 1989Assignee: Kubota LimitedInventors: Nobuyuki Toshikuni, Masao Takagi, Nobuyuki Nishiguchi
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Patent number: 4610174Abstract: A transmission for a tractor in which a forward-reverse change mechanism M3 is disposed between a first change speed mechanism M1 and a second change speed mechanism M2 and to the first change speed mechanism M1 a PTO countershaft 34 and a PTO shaft shaft 32 connected thereto are operatively connected. A drive shaft 47 for front wheels is operatively connected to the second change speed mechanism M2. A rotational power is transmitted to a mid-PTO shaft 39 from the PTO countershaft 34 via a gear 50 which is mounted freely and rotatably on the drive shaft 47 for the front wheels.Type: GrantFiled: August 22, 1984Date of Patent: September 9, 1986Assignee: Kubota, Ltd.Inventors: Masao Takagi, Mitsuo Watashi
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Patent number: 4565102Abstract: PTO-driving of a double-clutch-incorporated type transmission characterized in that the PTO-driving comprises a first gearing mechanism interlocking with a PTO main shaft, a second gearing mechanism interlocking with a running-travel main shaft, and a coupling means functioning to selectively drivably couple the said gearing mechanisms with a PTO transmission shaft.Type: GrantFiled: May 6, 1985Date of Patent: January 21, 1986Assignee: Kubota, Ltd.Inventors: Masayoshi Miyahara, Masao Takagi