Patents by Inventor Eitarou Tanaka
Eitarou Tanaka 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: 8702545Abstract: The power transmission system for use in a vehicle includes a power split device to perform power distribution among a flywheel for storing rotational energy as mechanical energy, an internal combustion engine and an electric rotating machine. The power transmission system is provided with an interrupting device configured to interrupt power transmission between a group of the flywheel and the electric rotating machine and a group of the internal combustion engine and drive wheels of the vehicle when rotational energy stored in the flywheel is transmitted to the electric rotating machine through the power split device under condition that power is transmitted between the internal combustion engine and the drive wheels.Type: GrantFiled: June 25, 2013Date of Patent: April 22, 2014Assignee: Denso CorporationInventors: Eitarou Tanaka, Takahiro Narita, Tetsuya Nagata
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Publication number: 20130288851Abstract: The power transmission system for use in a vehicle includes a power split device to perform power distribution among a flywheel for storing rotational energy as mechanical energy, an internal combustion engine and an electric rotating machine. The power transmission system is provided with an interrupting device configured to interrupt power transmission between a group of the flywheel and the electric rotating machine and a group of the internal combustion engine and drive wheels of the vehicle when rotational energy stored in the flywheel is transmitted to the electric rotating machine through the power split device under condition that power is transmitted between the internal combustion engine and the drive wheels.Type: ApplicationFiled: June 25, 2013Publication date: October 31, 2013Inventors: Eitarou TANAKA, Takahiro Narita, Tetsuya Nagata
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Patent number: 8496553Abstract: The power transmission system for use in a vehicle includes a power split device to perform power distribution among a flywheel for storing rotational energy as mechanical energy, an internal combustion engine and an electric rotating machine. The power transmission system is provided with an interrupting device configured to interrupt power transmission between a group of the flywheel and the electric rotating machine and a group of the internal combustion engine and drive wheels of the vehicle when rotational energy stored in the flywheel is transmitted to the electric rotating machine through the power split device under condition that power is transmitted between the internal combustion engine and the drive wheels.Type: GrantFiled: November 3, 2010Date of Patent: July 30, 2013Assignee: Denso CorporationInventors: Eitarou Tanaka, Takahiro Narita, Tetsuya Nagata
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Publication number: 20110106359Abstract: The power transmission system for use in a vehicle includes a power split device to perform power distribution among a flywheel for storing rotational energy as mechanical energy, an internal combustion engine and an electric rotating machine. The power transmission system is provided with an interrupting device configured to interrupt power transmission between a group of the flywheel and the electric rotating machine and a group of the internal combustion engine and drive wheels of the vehicle when rotational energy stored in the flywheel is transmitted to the electric rotating machine through the power split device under condition that power is transmitted between the internal combustion engine and the drive wheels.Type: ApplicationFiled: November 3, 2010Publication date: May 5, 2011Applicant: DENSO CORPORATIONInventors: Eitarou Tanaka, Takahiro Narita, Tetsuya Nagata
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Patent number: 7722345Abstract: In a screw compressor, a pair of rotors are located in a housing to be rotatable around their rotary axes to form in the housing a compression chamber in which gas sucked from a suction port of the housing is compressed thereby discharging the compressed gas from a discharge port of the housing. The suction port is provided in the housing at a position radial outside of the rotors, and the housing is provided with a communication passage through which the suction port communicates with the compression chamber before being communicated with the suction port. Furthermore, the communication passage is provided such that the gas sucked from the suction port flows into the communication passage in a direction approximately parallel with an axial direction of the rotors.Type: GrantFiled: May 3, 2007Date of Patent: May 25, 2010Assignee: DENSO CORPORATIONInventors: Eitarou Tanaka, Hiroshi Okada
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Patent number: 7553144Abstract: In a gas compressor, housing heads are disposed to define an internal space with a housing, and two rotors housed in the internal space are rotatable to form in the internal space a compression chamber. The housing has an inner wall surface opposed to at least outer peripheral surfaces of the two rotors, and the housing heads are provided in correspondence to the respective rotors. One end portion of a rotary shaft of each rotor is supported by the housing, and other end portion of the rotary shaft of each rotor is supported by the housing heads. The housing heads have a first outer peripheral portion corresponding to the inner wall surface of the housing, and a second outer peripheral portion larger than the first outer peripheral portion. Furthermore, the first outer peripheral portion of the housing heads is fitted onto the inner wall surface of the housing.Type: GrantFiled: April 19, 2007Date of Patent: June 30, 2009Assignee: DENSO CORPORATIONInventors: Hiroshi Okada, Eitarou Tanaka
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Publication number: 20070280846Abstract: In a screw compressor, a pair of rotors are located in a housing to be rotatable around their rotary axes to form in the housing a compression chamber in which gas sucked from a suction port of the housing is compressed thereby discharging the compressed gas from a discharge port of the housing. The suction port is provided in the housing at a position radial outside of the rotors, and the housing is provided with a communication passage through which the suction port communicates with the compression chamber before being communicated with the suction port. Furthermore, the communication passage is provided such that the gas sucked from the suction port flows into the communication passage in a direction approximately parallel with an axial direction of the rotors.Type: ApplicationFiled: May 3, 2007Publication date: December 6, 2007Applicant: DENSO CORPORATIONInventors: Eitarou Tanaka, Hiroshi Okada
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Publication number: 20070258841Abstract: In a gas compressor, housing heads are disposed to define an internal space with a housing, and two rotors housed in the internal space are rotatable to form in the internal space a compression chamber. The housing has an inner wall surface opposed to at least outer peripheral surfaces of the two rotors, and the housing heads are provided in correspondence to the respective rotors. One end portion of a rotary shaft of each rotor is supported by the housing, and other end portion of the rotary shaft of each rotor is supported by the housing heads. The housing heads have a first outer peripheral portion corresponding to the inner wall surface of the housing, and a second outer peripheral portion larger than the first outer peripheral portion. Furthermore, the first outer peripheral portion of the housing heads is fitted onto the inner wall surface of the housing.Type: ApplicationFiled: April 19, 2007Publication date: November 8, 2007Applicant: DENSO CORPORATIONInventors: Hiroshi Okada, Eitarou Tanaka