Patents by Inventor Katsuhiro Kurokawa
Katsuhiro Kurokawa 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: 6814137Abstract: A downstream side air passage of a an automotive air conditioner unit is partitioned into at least two or more independent small air passages with a plurality of partition plates extending along an air flow direction. Doors are provided for the respective small air passages and the small air passages each can distribute air that is independently conditioned to desired temperatures within themselves. A driving mechanism drives the doors in a slidable fashion.Type: GrantFiled: August 12, 2002Date of Patent: November 9, 2004Assignee: Calsonic Kansei CorporationInventors: Akihiro Tsurushima, Katsuhiro Kurokawa
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Patent number: 6814138Abstract: An air conditioning apparatus for an automotive vehicle includes a case having an opening which is formed at a side wall of the case. A heater core is installed in the case; and a mix door assembly detachably is installed in said case through the opening. The mix door assembly is adapted to vary a ratio of quantity of air passing through said heater core to a quantity of air bypassing said heater core. The mix door assembly including a housing, a mix door installed in the housing, and a slide mechanism installed in the housing. The slide mechanism is adapted to receive a rotational force and slide the mix door with respect to the housing according to the received rotational force to vary the ratio.Type: GrantFiled: February 19, 2003Date of Patent: November 9, 2004Assignee: Calsonic Kansei CorporationInventors: Akihiro Tsurushima, Koji Murayama, Katsuhiro Kurokawa, Noriyuki Kitahara, Kouichi Yamazaki
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Patent number: 6659167Abstract: A mix door (5) is arranged in air passages (10, 11) of an automotive air conditioning device. The mix door (5) is arranged to extend in a direction to shut an air flow blown from the upstream air passage (10) and swelled in a downstream direction with a predetermined radius of curvature. The door (5) is guided by arcuate cam grooves (19) and driven upward and downward to achieve open/close operation with the aid of a sliding mechanism (M). Compact construction, reduction in air flow resistance, smoothed handling, high sealing and high temperature controlling are achieved.Type: GrantFiled: June 6, 2001Date of Patent: December 9, 2003Assignee: Calsonic Kansei CorporationInventors: Akihiro Tsurushima, Toshiyuki Yoshida, Masaharu Onda, Toshiya Uchida, Katsuaki Koshida, Katsuhiro Kurokawa
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Patent number: 6609563Abstract: An air conditioning apparatus for an automotive vehicle includes a heater core and a mix door assembly installed in a case. The mix door assembly is detachably installed in the case through an opening formed at a side wall of the case. The mix door assembly constitutes a housing, a mix door and a slide mechanism. The slide mechanism is arranged to slide the mix door according to a received rotational force so as to vary the ratio of warm air to quantity and cool air quantity.Type: GrantFiled: April 4, 2000Date of Patent: August 26, 2003Assignee: Calsonic Kansei CorporationInventors: Akihiro Tsurushima, Koji Murayama, Katsuhiro Kurokawa, Noriyuki Kitahara, Kouichi Yamazaki
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Publication number: 20030145978Abstract: An air conditioning apparatus for an automotive vehicle is comprised of a heater core and a mix door assembly installed in a case. The mix door assembly is detachably installed in the case through an opening formed at a side wall of the case. The mix door assembly is constituted by a housing, a mix door and a slide mechanism. The slide mechanism is arranged to slide the mix door according to a received rotational force to vary a ratio of warm air quantity and cool air quantity.Type: ApplicationFiled: February 19, 2003Publication date: August 7, 2003Applicant: CALSONIC KANSEI CORPORATIONInventors: Akihiro Tsurushima, Koji Murayama, Katsuhiro Kurokawa, Noriyuki Kitahara, Kouichi Yamazaki
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Publication number: 20020189787Abstract: A downstream side air passage of a unit is partitioned into at least two or more independent small air passages with a plurality of partition plates extending along an air flow direction. Doors are provided for the respective small air passages and the small air passages each can distribute air that is independently conditioned to desired temperatures within themselves.Type: ApplicationFiled: August 12, 2002Publication date: December 19, 2002Applicant: CALSONICKANSEIInventors: Akihiro Tsurushima, Katsuhiro Kurokawa
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Patent number: 6453991Abstract: In an air conditioner unit, a downstream side air passage is partitioned into at least two independent small (or sub) air passages with a plurality of partition plates extending along an air flow direction. Individual doors are provided for the respective small air passages and the small air passages can each distribute air that is independently conditioned to a desired temperature for each such passage.Type: GrantFiled: March 10, 2000Date of Patent: September 24, 2002Assignee: Calsonickansei CorporationInventors: Akiyo Tsurushima, Katsuhiro Kurokawa
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Patent number: 6450246Abstract: An automotive air conditioner for improved assembly, work efficiency, and reduced manufacturing costs has a slide type air mixing door. An upstream side case is provided which defines therein an upstream air passage. A downstream side case is provided which defines therein first and second downstream air passages which extend in parallel to an air mix chamber. An evaporator is installed in the upstream air passage, and a heater core is installed in the first downstream air passage. A mixing door assembly is detachably disposed between the upstream and downstream side cases. The mixing door assembly constitutes a cassette which comprises a door housing, a slide door member sliding in the door housing and a sliding device for driving the slide door member.Type: GrantFiled: April 4, 2000Date of Patent: September 17, 2002Assignee: Calsonic Kansei CorporationInventors: Katsuhiro Kurokawa, Akihiro Tsurushima
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Patent number: 6450877Abstract: A mix door D, which is arranged in a limited space defined between an upstream air passage 10 in which an evaporator 3 is installed and a downstream air passage 11 in which a heater core 4 is installed, is of a sliding type. By guiding a door proper 12 by using a cam groove, a seal member 15 bonded to the door proper 12 is pressed against a contacting member 13 only when the door proper 12 assumes its close position. Smoothed operation of the door proper 12 is achieved with a compact construction of a unit, and sealing and temperature controlling performance is increased.Type: GrantFiled: June 25, 2001Date of Patent: September 17, 2002Assignee: Calsonic Kansei CorporationInventors: Akihiro Tsurushima, Takumi Ijichi, Katsuhiro Kurokawa, Toshiya Uchida, Masaharu Onda
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Patent number: 6354935Abstract: For driving a slide type air mix door, a driving mechanism is employed. The air mix door has a rack connected thereto. A gear unit is provided which includes an input gear, an output gear and a flexible structure through which the input gear and the output gear are integrally and coaxially connected. The output gear is operatively meshed with the rack. An electric actuator is provided for driving the gear unit through the input gear. Due to provision of the flexible structure, the electric actuator is prevented from being attached by an excessive load even when ill-matching occurs between de-energization of the electric actuator and arrival of the air mix door at a terminal stop position.Type: GrantFiled: April 4, 2000Date of Patent: March 12, 2002Assignee: Calsonic Kansei CorporationInventors: Katsuhiro Kurokawa, Akihiro Tsurushima, Katsumi Uehara, Noriyuki Kitahara, Toshio Komatsubara
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Patent number: 6351961Abstract: In a casing unit of the automotive air conditioner, an expanding portion of a mixing door with which an air flow is brought into direct contact is curved toward an upstream side of the air flow in a convex fashion.Type: GrantFiled: March 10, 2000Date of Patent: March 5, 2002Assignee: Calsonic Kansei CorporationInventors: Katsuhiro Kurokawa, Akihiro Tsurushima, Hiroyuki Tamura
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Patent number: 6347988Abstract: A slide door unit for an automotive air conditioner, has a door housing which has a concave inner surface and laterally opposed side walls. The side walls have arcuate guide grooves respectively. A slide door member has a convex outer surface slidable on and along the concave inner surface of the door housing. The slide door member has a concave inner surface. Racks are provided on laterally opposed sides of the concave inner surface of the slide door member. Guide pins are secured to laterally opposed ends of the slide door member. The guide pins are slidably engaged with the arcuate guide grooves of the door housing. A pinion gear unit includes two pinion gears and a shaft by which the pinion gears are connected. The pinion gear unit is rotatably held by the laterally opposed side walls of the door housing having the two pinion gears meshed with the racks respectively. A resilient structure is further provided, which is defined by each of the pinion gears of the pinion gear unit.Type: GrantFiled: April 4, 2000Date of Patent: February 19, 2002Assignee: Calsonic Kansei CorporationInventors: Katsuhiro Kurokawa, Akihiro Tsurushima, Yukio Tanaka
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Publication number: 20020009968Abstract: A mix door D, which is arranged in a limited space defined between an upstream air passage 10 in which an evaporator 3 is installed and a downstream air passage 11 in which a heater core 4 is installed, is of a sliding type. By guiding a door proper 12 by using a cam groove, a seal member 15 bonded to the door proper 12 is pressed against a contacting member 13 only when the door proper 12 assumes its close position. Smoothed operation of the door proper 12 is achieved with a compact construction of a unit, and sealing and temperature controlling performance is increased.Type: ApplicationFiled: June 25, 2001Publication date: January 24, 2002Inventors: Akihiro Tsurushima, Takumi Ijichi, Katsuhiro Kurokawa, Toshiya Uchida, Masaharu Onda
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Patent number: 6305462Abstract: A mix door (5) is arranged in air passages (10, 11) of an automotive air conditioning device. The mix door (5) is arranged to extend in a direction to shut an air flow blown from the upstream air passage (10) and swelled in a downstream direction with a predetermined radius of curvature. The door (5) is guided by arcuate cam grooves (19) and driven upward and downward to achieve open/close operation with the aid of a sliding mechanism (M). Compact construction, reduction in air flow resistance, smoothed handling, high sealing and high temperature controlling are achieved.Type: GrantFiled: April 28, 1999Date of Patent: October 23, 2001Assignee: Calsonic Kansei CorporationInventors: Akihiro Tsurushima, Toshiyuki Yoshida, Masaharu Onda, Toshiya Uchida, Katsuaki Koshida, Katsuhiro Kurokawa
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Publication number: 20010027861Abstract: A mix door (5) is arranged in air passages (10, 11) of an automotive air conditioning device. The mix door (5) is arranged to extend in a direction to shut an air flow blown from the upstream air passage (10) and swelled in a downstream direction with a predetermined radius of curvature. The door (5) is guided by arcuate cam grooves (19) and driven upward and downward to achieve open/close operation with the aid of a sliding mechanism (M). Compact construction, reduction in air flow resistance, smoothed handling, high sealing and high temperature controlling are achieved.Type: ApplicationFiled: June 6, 2001Publication date: October 11, 2001Inventors: Akihiro Tsurushima, Toshiyuki Yoshida, Masaharu Onda, Toshiya Uchida, Katsuaki Koshida, Katsuhiro Kurokawa
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Patent number: 6270400Abstract: A mix door D, which is arranged in a limited space defined between an upstream air passage 10 in which an evaporator 3 is installed and a downstream air passage 11 in which a heater core 4 is installed, is of a sliding type. By guiding a door proper 12 by using a cam groove, a seal member 15 bonded to the door proper 12 is pressed against a contacting member 13 only when the door proper 12 assumes its close position. Smoothed operation of the door proper 12 is achieved with a compact construction of a unit, and sealing and temperature controlling performance is increased.Type: GrantFiled: April 6, 1999Date of Patent: August 7, 2001Assignee: Calsonic Dansei CorporationInventors: Akihiro Tsurushima, Takumi Ijichi, Katsuhiro Kurokawa, Toshiya Uchida, Masaharu Onda
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Patent number: 6048263Abstract: An automobile heating, ventilation, and air conditioning (HVAC) unit comprises a heating, ventilation, and air conditioning case permitting the flow of interior air, an evaporator core disposed in the case for taking heat from the interior air to produce cool air, a heater core disposed in the case downstream of the evaporator core for adding heat to the cool air to produce warm air, an air mix chamber defined in the case for blending the cool air with the warm air, an air mix door disposed between the evaporator core and the heater core for controlling the percentage of the cool air and the warm air being fed into the air mix chamber, depending on the position of the air mix door, and a foot-vent communication passage defined in the case by partitioning the rear end of the air mix chamber by a partition wall extending substantially vertically along the inner wall of the case, so that the foot-vent communication passage communicates with the downstream end of the air mix chamber.Type: GrantFiled: June 29, 1998Date of Patent: April 11, 2000Assignee: Calsonic CorporationInventors: Toshiya Uchida, Toshiyuki Yoshida, Katsuaki Koshida, Katsuhiro Kurokawa
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Patent number: D450824Type: GrantFiled: April 4, 2000Date of Patent: November 20, 2001Assignee: Calsonic Kansei CorporationInventors: Katsuhiro Kurokawa, Akihiro Tsurushima
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Patent number: D452556Type: GrantFiled: April 4, 2000Date of Patent: December 25, 2001Assignee: Calsonic Kansei CorporationInventors: Katsuhiro Kurokawa, Akihiro Tsurushima