Patents by Inventor Toshihiro Tahara
Toshihiro Tahara 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: 7923873Abstract: In an electromagnetic actuator including a bearing member which slidably supports a variable core, a yoke for retaining a coil assembly by cooperation with a bottom wall of a housing is connected to the housing, and the bearing member is fitted into the yoke. A support for supporting an outward-facing flange formed at one end of the bearing member is mounted on the bottom wall, and a set spring for biasing the outward-facing flange toward the support is mounted under compression between the outward-facing flange and the first yoke. A low-friction material coating made of a fluorocarbon resin is formed on at least one of opposed sliding surfaces of the bearing member and a movable core. Thus, even if wear powder is generated between the set spring of the bearing member and a portion on which the set spring is pressed, the wear powder is prevented from entering inside the bearing member.Type: GrantFiled: February 3, 2010Date of Patent: April 12, 2011Assignee: Keihin CorporationInventors: Toshihiro Tahara, Hirozumi Kon
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Publication number: 20100133926Abstract: In an electromagnetic actuator including a bearing member which slidably supports a variable core, a yoke for retaining a coil assembly by cooperation with a bottom wall of a housing is connected to the housing, and the bearing member is fitted into the yoke. A support for supporting an outward-facing flange formed at one end of the bearing member is mounted on the bottom wall, and a set spring for biasing the outward-facing flange toward the support is mounted under compression between the outward-facing flange and the first yoke. A low-friction material coating made of a fluorocarbon resin is formed on at least one of opposed sliding surfaces of the bearing member and a movable core. Thus, even if wear powder is generated between the set spring of the bearing member and a portion on which the set spring is pressed, the wear powder is prevented from entering inside the bearing member.Type: ApplicationFiled: February 3, 2010Publication date: June 3, 2010Applicant: KEIHIN CORPORATIONInventors: Toshihiro TAHARA, Hirozumi Kon
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Patent number: 7679228Abstract: In an electromagnetic actuator including a bearing member which slidably supports a variable core, a yoke for retaining a coil assembly by cooperation with a bottom wall of a housing is connected to the housing, and the bearing member is fitted into the yoke. A support for supporting an outward-facing flange formed at one end of the bearing member is mounted on the bottom wall, and a set spring for biasing the outward-facing flange toward the support is mounted under compression between the outward-facing flange and the first yoke. A low-friction material coating made of a fluorocarbon resin is formed on at least one of opposed sliding surfaces of the bearing member and a movable core. Thus, even if wear powder is generated between the set spring of the bearing member and a portion on which the set spring is pressed, the wear powder is prevented from entering inside the bearing member.Type: GrantFiled: March 24, 2008Date of Patent: March 16, 2010Assignee: Keihin CorporationInventors: Toshihiro Tahara, Hirozumi Kon
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Publication number: 20080174186Abstract: In an electromagnetic actuator including a bearing member which slidably supports a variable core, a yoke for retaining a coil assembly by cooperation with a bottom wall of a housing is connected to the housing, and the bearing member is fitted into the yoke. A support for supporting an outward-facing flange formed at one end of the bearing member is mounted on the bottom wall, and a set spring for biasing the outward-facing flange toward the support is mounted under compression between the outward-facing flange and the first yoke. A low-friction material coating made of a fluorocarbon resin is formed on at least one of opposed sliding surfaces of the bearing member and a movable core. Thus, even if wear powder is generated between the set spring of the bearing member and a portion on which the set spring is pressed, the wear powder is prevented from entering inside the bearing member.Type: ApplicationFiled: March 24, 2008Publication date: July 24, 2008Inventors: Toshihiro TAHARA, Hirozumi KON
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Patent number: 7377121Abstract: A vehicle air conditioner includes an air conditioning case having an air introducing port from which air is introduced in an air introducing direction from a side of a cooling heat exchanger to a space under the cooling heat exchanger. Further, the air conditioning case includes a flow turning portion by which air introduced from the air introducing port is turned and flows through the cooling heat exchanger upwardly, and the cooling heat exchanger is slanted to have an upper end portion and a lower end portion approximately parallel to the air introducing direction. Furthermore, a plate member is arranged in the air conditioning case at a position under the lower end portion of the cooling heat exchanger, and the plate member has a plate surface which crosses with the air introducing direction to reduce a flow speed of air.Type: GrantFiled: September 12, 2005Date of Patent: May 27, 2008Assignee: Denso CorporationInventor: Toshihiro Tahara
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Patent number: 7348694Abstract: In an electromagnetic actuator including a bearing member which slidably supports a variable core, a yoke for retaining a coil assembly by cooperation with a bottom wall of a housing is connected to the housing, and the bearing member is fitted into the yoke. A support for supporting an outward-facing flange formed at one end of the bearing member is mounted on the bottom wall, and a set spring for biasing the outward-facing flange toward the support is mounted under compression between the outward-facing flange and the first yoke. A low-friction material coating made of a fluorocarbon resin is formed on at least one of opposed sliding surfaces of the bearing member and a movable core. Thus, even if wear powder is generated between the set spring of the bearing member and a portion on which the set spring is pressed, the wear powder is prevented from entering inside the bearing member.Type: GrantFiled: March 22, 2005Date of Patent: March 25, 2008Assignee: Keihin CorporationInventors: Toshihiro Tahara, Hirozumi Kon
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Publication number: 20060053813Abstract: A vehicle air conditioner includes an air conditioning case having an air introducing port from which air is introduced in an air introducing direction from a side of a cooling heat exchanger to a space under the cooling heat exchanger. Further, the air conditioning case includes a flow turning portion by which air introduced from the air introducing port is turned and flows through the cooling heat exchanger upwardly, and the cooling heat exchanger is slanted to have an upper end portion and a lower end portion approximately parallel to the air introducing direction. Furthermore, a plate member is arranged in the air conditioning case at a position under the lower end portion of the cooling heat exchanger, and the plate member has a plate surface which crosses with the air introducing direction to reduce a flow speed of air.Type: ApplicationFiled: September 12, 2005Publication date: March 16, 2006Applicant: DENSO CorporationInventor: Toshihiro Tahara
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Publication number: 20050218734Abstract: In an electromagnetic actuator including a bearing member which slidably supports a variable core, a yoke for retaining a coil assembly by cooperation with a bottom wall of a housing is connected to the housing, and the bearing member is fitted into the yoke. A support for supporting an outward-facing flange formed at one end of the bearing member is mounted on the bottom wall, and a set spring for biasing the outward-facing flange toward the support is mounted under compression between the outward-facing flange and the first yoke. A low-friction material coating made of a fluorocarbon resin is formed on at least one of opposed sliding surfaces of the bearing member and a movable core. Thus, even if wear powder is generated between the set spring of the bearing member and a portion on which the set spring is pressed, the wear powder is prevented from entering inside the bearing member.Type: ApplicationFiled: March 22, 2005Publication date: October 6, 2005Inventors: Toshihiro Tahara, Hirozumi Kon
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Publication number: 20040016537Abstract: Air is introduced into an automotive air-conditioner from a front side of a vehicle, and the air conditioned in the air-conditioner is supplied to a passenger compartment from a rear side of an air-conditioner casing. An aspirator for drawing air in the passenger compartment to a temperature sensor is mounted on a rear wall or a sidewall of the casing, so that the aspirator is exposed to a space that is always communicating with the conditioned air in the air-conditioner. In this manner, the air in the passenger compartment is surely supplied to the temperature sensor irrespective of operating modes of the air-conditioner.Type: ApplicationFiled: July 25, 2003Publication date: January 29, 2004Inventors: Takeshi Nakamura, Toshihiro Tahara, Takahiro Tokunaga
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Patent number: 6681582Abstract: A vapor compression type refrigeration apparatus is provided, in which refrigerant leakage is detected at an early stage. A temperature difference related to the theoretical heat dissipation of the condenser is compared with the actual temperature difference in heat dissipation (temperature difference between the condensation temperature and the outside-air temperature) of the condenser to determine whether there is a refrigerant leak.Type: GrantFiled: April 2, 2002Date of Patent: January 27, 2004Assignee: Denso CorporationInventors: Takahisa Suzuki, Tatsuo Tsunooka, Toshihiro Tahara, Tetsuji Nobuta
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Publication number: 20020139128Abstract: A vapor compression type refrigeration apparatus is provided, in which refrigerant leakage is detected at an early stage. A temperature difference related to the theoretical heat dissipation of the condenser is compared with the actual temperature difference in heat dissipation (temperature difference between the condensation temperature and the outside-air temperature) of the condenser to determine whether there is a refrigerant leak.Type: ApplicationFiled: April 2, 2002Publication date: October 3, 2002Inventors: Takahisa Suzuki, Tatsuo Tsunooka, Toshihiro Tahara, Tetsuji Nobuta
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Patent number: 6223727Abstract: In an electromagnetic fuel injection valve, a fitting surface of a valve housing, over which a seal positioning ring is fitted, is formed of a diameter smaller than that of an annular sealing surface over which a seal member is fitted. A tapered surface is provided between the fitting surface and the sealing surface, and a resilient projection is formed on the seal positioning ring, so that the projection is in pressure contact with the tapered surface in a state in which the seal positioning ring has been fitted over the fitting surface. Thus, the seal positioning ring can be retained easily and precisely in a regular position on the outer peripheral surface of the valve housing by a reaction force provided by the resilient projection and hence, no post-treatment is required.Type: GrantFiled: February 23, 2000Date of Patent: May 1, 2001Assignee: Keihin CorporationInventors: Toshihiro Tahara, Manabu Shoji
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Patent number: 5219912Abstract: An emulsified alkenylsuccinic acid sizing agent having a solid content of not less than 25% by weight is disclosed, which comprises a composition having not less than 25 parts by weight of alkenylsuccinic acid derived from the reaction product of a branched internal olefin of 12-18 carbon atoms with maleic anhydride, and being dispersed in water with an anionic polymer type dispersant or with an anionic polymer type dispersant and an emulsifier.Type: GrantFiled: July 10, 1991Date of Patent: June 15, 1993Assignee: Mitsubishi Oil Co., Ltd.Inventors: Yoshio Takahashi, Junji Okazaki, Hideto Umekawa, Toshihiro Tahara