Patents by Inventor Jiro Iwasa
Jiro Iwasa 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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Publication number: 20050124446Abstract: A power transmission mechanism is attached to a housing of a rotary machine for inputting power to a rotary shaft of the rotary machine and includes a rotary body that is rotatably supported by the housing through a rotary body bearing and an electric motor, a stator of which is supported by the housing through a stator bracket. A positioning structure for the power transmission mechanism includes a bearing positioning means and a bracket positioning means. The bearing positioning means positions the rotary body bearing forward and rearward in an axial direction of the rotary shaft relative to the housing and has front and rear positioning surfaces. The bracket positioning means positions the stator bracket forward and rearward in the axial direction and has front and rear positioning surfaces. At least one of the front and rear positioning surfaces of the respective positioning means is shared with each other.Type: ApplicationFiled: December 9, 2003Publication date: June 9, 2005Inventors: Jiro Iwasa, Masahiro Kawaguchi, Yasuharu Odachi, Minoru Mera, Kazuo Murakami, Taku Adaniya
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Patent number: 6821094Abstract: A compressor includes a housing, a rotary shaft, a pulley, an electric motor, a pulley one-way clutch, and a motor one-way clutch. The shaft is rotatably supported by the housing. The pulley is operably connected to the shaft and includes a power transmission portion. When power is transmitted from a vehicular engine to the power transmission portion, the pulley is rotated. The electric motor rotates the shaft and includes a rotor, which is operably connected to the shaft. At least part of the electric motor overlaps the power transmission portion in the axial direction of the shaft. The pulley one-way clutch is located between the pulley and the shaft and selectively permits and prevents power transmission between the pulley and the shaft. The motor one-way clutch is located between the rotor and the shaft and selectively permits and prevents power transmission between the rotor and the shaft.Type: GrantFiled: November 25, 2002Date of Patent: November 23, 2004Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Kazuo Murakami, Yasuharu Odachi, Taku Adaniya, Takeshi Kawata, Kazuhiko Minami, Akihito Yamanouchi, Masahiro Kawaguchi, Hirohito Hayashi, Jiro Iwasa
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Publication number: 20040211203Abstract: A refrigeration cycle apparatus has a compressor, a radiator, an expansion device, an evaporator, and a variable-speed mechanism. When a rotary shaft of the compressor is rotated, the compressor increases the pressure of refrigerant. The radiator cools refrigerant the pressure of which has been increased by the compressor. The expansion device generates power using the decompression and expansion and transmits the power to the rotary shaft. The evaporator heats refrigerant that has been decompressed and expanded by the expansion device. The variable-speed mechanism is capable of changing the discharge rate of the expansion device per rotation of the rotary shaft. This permits the expansion device to increase the amount of recovered power.Type: ApplicationFiled: March 31, 2004Publication date: October 28, 2004Inventors: Masakazu Murase, Masahiro Kawaguchi, Masao Iguchi, Jiro Iwasa
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Publication number: 20040202550Abstract: A hybrid compressor includes a housing. A rotary shaft is rotatably supported by the housing. A compression mechanism is located in the housing and connected to the rotary shaft for compressing refrigerant gas. A drive mechanism is located in the housing for driving the compression mechanism. A speed-changing mechanism is located in the housing for transmitting power from the drive mechanism to the compression mechanism via rotary shaft. The speed-changing mechanism varies the rotational speed of the drive mechanism. A sealing mechanism is located in the housing for sealing the speed-changing mechanism.Type: ApplicationFiled: March 22, 2004Publication date: October 14, 2004Inventors: Masahiro Kawaguchi, Jiro Iwasa, Masao Iguchi, Masaya Sakamoto, Shinya Sato, Tomoharu Tashiro, Akihito Yamanouchi
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Publication number: 20040197204Abstract: A variable displacement mechanism for a scroll type compressor includes a by-pass passage, a valve chamber, a valve plate and an actuator. The by-pass passage serves to interconnect a compression chamber in a process of volume reduction with a suction pressure region and includes a first valve hole. The valve chamber serves to communicate with the first valve hole and forms a valve seat surface around an opening of the first valve hole. The valve plate has an end surface that faces the valve seat surface. The valve plate is arranged in the valve chamber so as to selectively move between an open position, where the end surface is separated from the valve seat surface to open the first valve hole, and a close position, where the end surface contacts the valve seat surface to close the first valve hole. The actuator serves to actuate the valve plate.Type: ApplicationFiled: December 22, 2003Publication date: October 7, 2004Inventors: Akihito Yamanouchi, Masao Iguchi, Jiro Iwasa, Masaya Sakamoto, Masahiro Kawaguchi
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Publication number: 20040184926Abstract: A control device for a hybrid compressor includes a motor driver for driving an electric motor, a clutch controller for driving an electromagnetic clutch and an engine drive timing controller. Power is transmitted from an engine to the compressor when the electromagnetic clutch is connected. The clutch controller sets a connecting force of the electromagnetic clutch to transmit a second starting torque of the compressor. The engine drive timing controller is electrically connected to the motor driver and the clutch controller. The engine drive timing controller commands the motor driver to activate the electric motor to discharge liquid refrigerant from the compression chambers to a predetermined level so that the compressor reduces its starting torque to the second starting torque before commanding the clutch controller to connect the electromagnetic clutch to transmit the power from the engine to the compressor.Type: ApplicationFiled: March 2, 2004Publication date: September 23, 2004Inventors: Jiro Iwasa, Masahiro Kawaguchi, Yasuharu Odachi, Masao Iguchi, Akihito Yamanouchi
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Publication number: 20040146419Abstract: In a scroll type compressor having a movable scroll member and a fixed scroll member, the movable scroll member and the fixed scroll member defines compression chambers therebetween. The compression chambers reduce in volume in accordance with orbital motion of the movable scroll member relative to the fixed scroll member. Thus gas is compressed. A variable displacement mechanism for the scroll type compressor has a by-pass passage, a pivotal plate and an actuator. The by-pass passage serves to interconnect the compression chamber in a process of volume-reducing and a suction pressure region. The pivotal plate has a communication hole that partially constitutes the by-pass passage and is selectively pivoted between a first pivotal position for opening the by-pass passage by the communication hole and a second pivotal position for closing the by-pass passage. The actuator serves to pivot the pivotal plate.Type: ApplicationFiled: November 4, 2003Publication date: July 29, 2004Inventors: Masahiro Kawaguchi, Yasuharu Odachi, Masao Iguchi, Jiro Iwasa, Akihito Yamanouchi
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Patent number: 6737773Abstract: A conventional hybrid compressor compresses gas when power is transmitted from a vehicular drive source via a power transmission mechanism and when an electric motor, which is incorporated in the power transmission mechanism, is actuated. A motor wiring component extends from the electric motor to the outside of the power transmission mechanism. The motor wiring is provided with shape maintaining means for maintaining the shape.Type: GrantFiled: September 19, 2002Date of Patent: May 18, 2004Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Hirohito Hayashi, Jiro Iwasa, Taku Adaniya
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Publication number: 20040045307Abstract: A hybrid compressor system in a vehicle air conditioner includes a variable displacement hybrid compressor, a detector for detecting information for air conditioning, a thermal load calculator and a controller. The compressor is selectively driven by an engine and an electric motor. The calculator calculates a thermal load based on the detected information. The controller compares the thermal load with a predetermined value. The controller changes displacement of the compressor to a first predetermined displacement value and selects the engine as a drive source of the compressor when the thermal load is larger than the predetermined value. The controller changes the displacement of the compressor to a second predetermined displacement value that is smaller than the first predetermined displacement value and selects the electric motor as the drive source of the compressor when the thermal load is equal to, or smaller than the predetermined value.Type: ApplicationFiled: June 12, 2003Publication date: March 11, 2004Inventors: Kitaru Iwata, Masahiro Kawaguchi, Yasuharu Odachi, Hirohito Hayashi, Masanori Sonobe, Jiro Iwasa, Masao Iguchi, Akihito Yamanouchi
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Patent number: 6617727Abstract: A housing of a compressor supports a rotary shaft. The rotary shaft is coupled to a pulley with a pulley one-way clutch and is coupled to a rotor of an electric motor with a motor one-way clutch. The pulley is supported by the housing with a pulley bearing. The electric motor overlaps a power transmission portion in the axial direction of the rotary shaft. At least two of the bearing, the pulley one-way clutch, the motor one-way clutch, and a brush device of the electric motor overlap each other in the axial direction of the rotary shaft. As a result, the size of the compressor is reduced in the axial direction of the rotary shaft.Type: GrantFiled: November 25, 2002Date of Patent: September 9, 2003Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Jiro Iwasa, Taku Adaniya, Yasuharu Odachi, Takeshi Kawata, Kazuhiko Minami, Kazuo Murakami, Hirohito Hayashi
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Publication number: 20030098624Abstract: A housing of a compressor supports a rotary shaft. The rotary shaft is coupled to a pulley with a pulley one-way clutch and is coupled to a rotor of an electric motor with a motor one-way clutch. The pulley is supported by the housing with a pulley bearing. The electric motor overlaps a power transmission portion in the axial direction of the rotary shaft. At least two of the bearing, the pulley one-way clutch, the motor one-way clutch, and a brush device of the electric motor overlap each other in the axial direction of the rotary shaft. As a result, the size of the compressor is reduced in the axial direction of the rotary shaft.Type: ApplicationFiled: November 25, 2002Publication date: May 29, 2003Inventors: Jiro Iwasa, Taku Adaniya, Yasuharu Odachi, Takeshi Kawata, Kazuhiko Minami, Kazuo Murakami, Hirohito Hayashi
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Publication number: 20030098186Abstract: A compressor includes a housing, a rotary shaft, a pulley, an electric motor, a pulley one-way clutch, and a motor one-way clutch. The shaft is rotatably supported by the housing. The pulley is operably connected to the shaft and includes a power transmission portion. When power is transmitted from a vehicular engine to the power transmission portion, the pulley is rotated. The electric motor rotates the shaft and includes a rotor, which is operably connected to the shaft. At least part of the electric motor overlaps the power transmission portion in the axial direction of the shaft. The pulley one-way clutch is located between the pulley and the shaft and selectively permits and prevents power transmission between the pulley and the shaft. The motor one-way clutch is located between the rotor and the shaft and selectively permits and prevents power transmission between the rotor and the shaft.Type: ApplicationFiled: November 25, 2002Publication date: May 29, 2003Inventors: Kazuo Murakami, Yasuharu Odachi, Taku Adaniya, Takeshi Kawata, Kazuhiko Minami, Akihito Yamanouchi, Masahiro Kawaguchi, Hirohito Hayashi, Jiro Iwasa
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Publication number: 20030057790Abstract: A conventional hybrid compressor compresses gas when power is transmitted from a vehicular drive source via a power transmission mechanism and when an electric motor, which is incorporated in the power transmission mechanism, is actuated. A motor wiring component extends from the electric motor to the outside of the power transmission mechanism. The motor wiring is provided with shape maintaining means for maintaining the shape.Type: ApplicationFiled: September 19, 2002Publication date: March 27, 2003Inventors: Hirohito Hayashi, Jiro Iwasa, Taku Adaniya