Patents by Inventor Kazunori Aihara
Kazunori Aihara 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: 6247497Abstract: A rotary channel-selector valve is provided, which includes: a valve-seat plate covering one end of a cylindrical valve housing and provided with low and high pressure ports and two switching ports all connecting the inside and the outside of the valve; and a main valve element accommodated in the valve housing and provided with low and high pressure connecting grooves on one end surface thereof, wherein one (or the other) of the switching ports communicates with the low pressure port through the low pressure connecting groove and simultaneously the other (or one) thereof communicates with the high pressure port through the high pressure connecting groove at a first (or second) channel-switching position of the main valve element.Type: GrantFiled: June 6, 2000Date of Patent: June 19, 2001Assignee: Kabushiki Kaisha Saginomiya SeisakushoInventors: Kazuo Hirata, Toshihiro Teranishi, Mitsuaki Noda, Mitsuo Sugita, Michiaki Ohno, Fumio Kanasaki, Noboru Nakagawa, Kazunori Aihara, Kazushige Suzuki
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Patent number: 6231028Abstract: A rotary channel-selector valve is provided, which includes: a valve-seat plate covering one end of a cylindrical valve housing and provided with low and high pressure ports and two switching ports all connecting the inside and the outside of the valve; and a main valve element accommodated in the valve housing and provided with low and high pressure connecting grooves on one end surface thereof, wherein one (or the other) of the switching ports communicates with the low pressure port through the low pressure connecting groove and simultaneously the other (or one) thereof communicates with the high pressure port through the high pressure connecting groove at a first (or second) channel-switching position of the main valve element.Type: GrantFiled: June 6, 2000Date of Patent: May 15, 2001Assignee: Kabushiki Kaisha Saginomiya SeisakushoInventors: Kazuo Hirata, Toshihiro Teranishi, Mitsuaki Noda, Mitsuo Sugita, Michiaki Ohno, Fumio Kanasaki, Noboru Nakagawa, Kazunori Aihara, Kazushige Suzuki
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Patent number: 6216735Abstract: A rotary channel-selector valve is provided, which includes: a valve-seat plate covering one end of a cylindrical valve housing and provided with low and high pressure ports and two switching ports all connecting the inside and the outside of the valve; and a main valve element accommodated in the valve housing and provided with low and high pressure connecting grooves on one end surface thereof, wherein one (or the other) of the switching ports communicates with the low pressure port through the low pressure connecting groove and simultaneously the other (or one) thereof communicates with the high pressure port through the high pressure connecting groove at a first (or second) channel-switching position of the main valve element.Type: GrantFiled: June 6, 2000Date of Patent: April 17, 2001Assignee: Kabushiki Kaisha Saginomiya SeisakushoInventors: Kazuo Hirata, Toshihiro Teranishi, Mitsuaki Noda, Mitsuo Sugita, Michiaki Ohno, Fumio Kanasaki, Noboru Nakagawa, Kazunori Aihara, Kazushige Suzuki
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Patent number: 6125885Abstract: A rotary channel-selector valve is provided, which includes: a valve-seat plate covering one end of a cylindrical valve housing and provided with low and high pressure ports and two switching ports all connecting the inside and the outside of the valve; and a main valve element accommodated in the valve housing and provided with low and high pressure connecting grooves on one end surface thereof, wherein one (or the other) of the switching ports communicates with the low pressure port through the low pressure connecting groove and simultaneously the other (or one) thereof communicates with the high pressure port through the high pressure connecting groove at a first (or second) channel-switching position of the main valve element.Type: GrantFiled: November 3, 1998Date of Patent: October 3, 2000Assignee: Kabushiki Kaisha Saginomiya SeisakushoInventors: Kazuo Hirata, Toshihiro Teranishi, Mitsuaki Noda, Mitsuo Sugita, Michiaki Ohno, Fumio Kanasaki, Noboru Nakagawa, Kazunori Aihara, Kazushige Suzuki
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Patent number: 6076553Abstract: In a rotary flow-path exchanging valve, the magnetic force generated in a pair of main magnetic pole pieces (66) by energization of an electromagnetic solenoid is acted on a multi-pole magnet (71) of a main valve element accommodated within a valve housing (1) so that the main valve element (3) is rotated to exchange a flow-path. The multi-pole magnet (71) is made of a plastic magnet of plastic material mixed with magnetic powder. The main valve element (3) and multi-pole magnet (71) are integrally formed by multiple molding. A pair of main magnetic pole pieces (66) magnetically connected to one polarity of the electromagnetic solenoid (11) are arranged. A pair of auxiliary magnetic pole pieces (70) connected to the other polarity of the electromagnetic solenoid (11) are arranged at positions out of phase from the magnetic pole pieces by 90.degree..Type: GrantFiled: August 25, 1999Date of Patent: June 20, 2000Assignee: Kabushiki Kaisha Saginomiya SeisakushoInventors: Mitsuo Sugita, Akira Kasai, Noboru Nakagawa, Kazunori Aihara, Kazushige Suzuki, Kazuo Hirata, Toshihiro Teranishi, Mitsuaki Noda, Michiaki Ohno, Fumio Kanasaki
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Patent number: 6070613Abstract: In a rotary flow-path exchanging valve, the magnetic force generated in a pair of main magnetic pole pieces (66) by energization of an electromagnetic solenoid is acted on a multi-pole magnet (71) of a main valve element accommodated within a valve housing (1) so that the main valve element (3) is rotated to exchange a flow-path. The multi-pole magnet (71) is made of a plastic magnet of plastic material mixed with magnetic powder. The main valve element (3) and multi-pole magnet (71) are integrally formed by multiple molding. A pair of main magnetic pole pieces (66) magnetically connected to one polarity of the electromagnetic solenoid (11) are arranged. A pair of auxiliary magnetic pole pieces (70) connected to the other polarity of the electromagnetic solenoid (11) are arranged at positions out of phase from the magnetic pole pieces by 90.degree..Type: GrantFiled: August 25, 1999Date of Patent: June 6, 2000Assignee: Kabushiki Kaisha Saginomiya SeisakushoInventors: Mitsuo Sugita, Akira Kasai, Noboru Nakagawa, Kazunori Aihara, Kazushige Suzuki, Kazuo Hirata, Toshihiro Teranishi, Mitsuaki Noda, Michiaki Ohno, Fumio Kanasaki
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Patent number: 5992459Abstract: In a rotary flow-path exchanging valve, the magnetic force generated in a pair of main magnetic pole pieces 66 by energization of an electromagnetic solenoid is acted on a multi-pole magnet 71 of a main valve element accommodated within a valve housing 1 so that the main valve element 3 is rotated to exchange a flow-path. The multi-pole magnet 71 is made of a plastic magnet of plastic material mixed with magnetic powder. The main valve element 3 and multi-pole magnet 71 are integrally formed by multiple molding. A pair of main magnetic pole pieces 66 magnetically connected to one polarity of the electromagnetic solenoid 11 are arranged. A pair of auxiliary magnetic pole pieces 70 connected to the other polarity of the electromagnetic solenoid 11 are arranged at positions out of phase from the magnetic pole pieces by 90.degree..Type: GrantFiled: June 25, 1998Date of Patent: November 30, 1999Assignee: Kabushiki Kaisha Saginomiya SeisakushoInventors: Mitsuo Sugita, Akira Kasai, Noboru Nakagawa, Kazunori Aihara, Kazushige Suzuki, Kazuo Hirata, Toshihiro Teranishi, Mitsuaki Noda, Michiaki Ohno, Fumio Kanasaki
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Patent number: 5937902Abstract: In a rotary flow-path exchanging valve, a high pressure side communicating groove 37 is provided to communicate a first exchanging port 23 and a second exchanging port 27 of a valve seat plate 5 with a high pressure side communicating port selectively. A part of a joint pipe 17 to be connected to the high pressure side port 19 is protruded into the high pressure side communicating groove 27. The protruding part constitutes a stopper pipe 20 for limiting the rotatable range of a valve element 1. In installing the stopper pipe 20, it is connected and secured to the high pressure side port 19 of the valve seat plate 5, and thereafter is hardened by plastic deformation processing. Thus, when the stopper pipe is heated by soldering for its securing to the valve seat 5, the necessary strength thereof can be maintained.Type: GrantFiled: June 30, 1998Date of Patent: August 17, 1999Assignee: Kabushiki Kaisha Saginomiya SeisakushoInventors: Michiaki Ohno, Fumio Kanasaki, Mitsuaki Noda, Kazunori Aihara, Noboru Nakagawa, Kazushige Suzuki, Mitsuo Sugita, Toshihiro Teranishi, Kazuo Hirata