Patents by Inventor Hayato Ikeda
Hayato Ikeda 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: 5051069Abstract: A multi-cylinder piston-operated compressor having a cylinder consisting of an axially combined cylinder block closed at both axial ends by front and rear housings having suction and discharge chambers therein, a reciprocative piston mechanism arranged in the cylinder for sucking, compressing, and discharging a refrigerant gas, and a connecting flange from which the refrigerant gas after compression is sent toward an air-conditioning circuit. The cylinder block and the connecting flange define a muffling chamber for deadening pulsation in the pressure of the discharged refrigerant gas.Type: GrantFiled: February 28, 1990Date of Patent: September 24, 1991Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Hayato Ikeda, Tetsuo Yoshida, Shinji Mizuno
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Patent number: 5050892Abstract: A piston for a compressor comprising a ring groove on the outer circumferential surface of the piston, and a discontinuous ring seal member with opposite split ends made of a plastic material and fitted in the ring groove. The ring member having an outer surface comprising a main sealing portion having an axially uniform shape and an outwardly circumferentially projecting flexible lip portion. Also, the inner surface of the ring member comprises an inner bearing portion able to come into contact with a first portion of a bottom surface of the ring groove such that the flexible lip portion of the outer surface is brought into contact with a cylinder wall of the cylinder bore and preflexed inwardly.Type: GrantFiled: March 8, 1990Date of Patent: September 24, 1991Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Katsunori Kawai, Hayato Ikeda, Naoya Yokomachi, Kazuhiro Tanikawa
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Patent number: 5016524Abstract: A continuous seal ring member fitted in a ring groove of a piston of a compressor. The seal ring member has a washer-like initial shape with an internal diameter smaller than an outer diameter of the piston, whereby the inner peripheral portion of the seal ring member is expanded when the seal ring member is fitted in the ring groove. The outer peripheral portion of the ring seal member is then axially and inwardly collapsed relative to the inner peripheral portion thereof so that one of the side surfaces of the initial seal ring member constitutes an outer sealing surface for engagement with the cylinder bore and the outer peripheral portion in the original shape is arranged on the side of said compression chamber.Type: GrantFiled: March 9, 1990Date of Patent: May 21, 1991Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Katsunori Kawai, Hayato Ikeda, Shinichi Ishihara, Toshihiro Kawai
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Patent number: 5009574Abstract: A swash plate type compressor having a pair of axially combined front and rear cylinder blocks forming therein a plurality of cylinder bores, a swash plate chamber, and an oil chamber in which a lubricating oil is stored to be stirred by a swash plate rotatably received in the swash plate chamber, a drive shaft centrally rotatably mounted in the combined cylinder blocks to cause a rotation of the swash plate, a plurality of reciprocatory double-headed pistons slidably fitted in the cylinder bores and operatively engaged with the swash plate via shoe members to be reciprocated by the rotation of the swash plate, a pair of thrust bearings axially supporting the swash plate, front and rear housings having suction chambers for the refrigerant gas before compression and discharge chambers for the refrigerant gas after compression, the front housing further having a shaft sealing chamber formed therein and separated from the suction chamber thereof to define an intermediate pressure chamber between the high pressurType: GrantFiled: December 4, 1989Date of Patent: April 23, 1991Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Hayato Ikeda, Masahiro Sawada, Norihiko Nakamura
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Patent number: 5009286Abstract: A through hole in a cylinder block through which a bolt is inserted to assemble the cylinder block and the front and rear housings as one body, and is positioned above a horizontal plane on which a drive shaft lies, is utilized as a part of a passage for a lubricating oil so that a sufficient lubrication is supplied to a thrust bearing and other elements, and thus an effective mass production of a swash type compressor can be carried out because it becomes unnecessary to form an oil passage in the drive shaft, which passage is difficult to machine.Type: GrantFiled: December 4, 1989Date of Patent: April 23, 1991Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushiInventors: Hayato Ikeda, Masahiro Sawada, Norihiko Nakamura, Naoya Yokomachi
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Patent number: 4990064Abstract: A multi-piston swash plate type compressor with an internal lubricating arrangement for an air-conditioning system used in a vehicle such as an automobile including a cylinder block body having a swash plate chamber formed therein receiving a swash plate, cylinder bores formed therein for receiving pistons, and a central axial bore formed therein for receiving a driving shaft, the driving shaft being rotatably supported in the axial bore by radial bearings provided therein and by thrust bearings provided around the shaft at the sides of the swash plate. The compressor has suction and discharge chambers communicated with the cylinder bores through reed valves. The swash plate chamber is fed with a refrigerant inclusive of a lubricating oil from the air-conditioning system, and the refrigerant is then fed to the suction chamber through the axial bore.Type: GrantFiled: August 4, 1989Date of Patent: February 5, 1991Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Hayato Ikeda, Hideo Mori, Kazuhiro Ohta
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Patent number: 4983681Abstract: Colored microfine globular particles are produced by causing carbon black to react with a polymer capable of reacting with the carbon black thereby forming a carbon black-graft polymer, dispersing this carbon black-graft polymer in a polymerizable monomer component, and then polymerizing the polymerizable monomer component. These particles, in the unmodified form, are usable as a toner for the development of images of static charge and, in a form incorporated in a varying component, are usable such as in resin composition, coating composition, thermosensitive transfer ink ribbon coating agent, thermosensitive transfer ink, or back-coating agent for magnetic recording medium.Type: GrantFiled: December 22, 1989Date of Patent: January 8, 1991Assignee: Nippon Shokubai Kagaku Kogyo Kabushiki KaishaInventors: Yoshikuni Mori, Mitsuo Kushino, Hayato Ikeda, Nobuaki Urashima, Kenji Minami, Iwao Fukikawa
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Patent number: 4974702Abstract: A thrust bearing lubricating system of a swash plate type compressor having a main lubricating oil passageway bored in the center of a drive shaft on which a swash plate is mounted to be axially supported by a pair of front and rear thrust bearings, an oil pumping mechanism for pumping lubricating oil from an oil sump in the bottom of a cylinder block assembly and supplying the lubricating oil into the main lubricating oil passageway, and at least front and rear radial branch lubricating oil passageways formed in the drive shaft to be communicated with the main lubricating oil passageway and to allow spouting of the lubricating oil toward the front and rear thrust bearings, the front and rear radial branch lubricating oil passageways having different cross-sectional areas from one another to equalize an amount of lubricating oil supplied to both thrust bearings.Type: GrantFiled: January 24, 1990Date of Patent: December 4, 1990Assignee: Kabushiki Kaisha Tyoda Jidoshokki SeisakushoInventors: Naoya Yokomachi, Hayato Ikeda, Norihiko Nakamura, Katsunori Kawai, Masahiro Sawada, Shinichi Ishihara
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Patent number: 4940749Abstract: A carbon black-graft polymer, produced by causing a polymer possessing within the molecular unit thereof at least one reactive group selected from the class consisting of aziridine group, oxazoline group. N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon balck. The polymer can be used as a toner for electrostatically charged image, resin composition, coating composition, ink for thermographic transer, coating gent for magnetic recording medium, rubber composition, and carbon black dispersion and the like.Type: GrantFiled: June 29, 1989Date of Patent: July 10, 1990Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Yoshikuni Mori, Mitsuo Kushino, Hayato Ikeda, Nobuaki Urashima, Masuji Izubayashi, Shigeru Tanimori, Yoshihiro Arita, Kiyoshi Kawamura, Kenji Minami, Yoshinori Sano
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Patent number: 4910113Abstract: Colored microfine globular particles are produced by causing carbon black to react with a polymer capable of reacting with the carbon black thereby forming a carbon black-graft polymer, dispersing this carbon black-graft polymer in a polymerizable monomer component, and then polymerizing the polymerizable monomer component. These particles, in the unmodified form, are usable as a toner for the development of images of static charge and, in a form incorporated in a varying component, are usable such as in resin composition, coating composition, thermosensitive transfer ink ribbon coating agent, thermosensitive transfer ink, or back-coating agent for magnetic recording medium.Type: GrantFiled: July 7, 1988Date of Patent: March 20, 1990Assignee: Nippon Shokubai Kagaku Kogyo Kabushiki KaishaInventors: Yoshikuni Mori, Mitsuo Kushino, Hayato Ikeda, Nobuaki Urashima, Kenji Minami, Iwao Fujikawa
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Patent number: 4886424Abstract: A multi-piston swash plate type compressor for an air-conditioning system used in a vehicle such as an automobile, including a cylinder block body having a swash plate chamber formed therein for receiving a swash plate and cylinder bores formed therein for receiving pistons which are reciprocated by rotation of the swash plate. The compressor has a suction chamber which is fed with a refrigerant including lubricating oil from an evaporator of the air-conditioning system and a discharge chamber which feeds the compressed refrigerant to a condenser of the air-conditioning system. When the compressed refrigerant is discharged from the cylinder bore into the discharge chamber through a discharge reed valve, all of the discharged refrigerant is impinged on the peripheral and inner wall so as to separate the lubricating oil from the refrigerant, whereby an effective damping and sealing oil layer is formed between the discharge reed valve and the valve seat thereof.Type: GrantFiled: March 9, 1988Date of Patent: December 12, 1989Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Hayato Ikeda, Hisato Kawamura, Shinichi Ishihara
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Patent number: 4880857Abstract: A carbon black-graft polymer, produced by causing a polymer possessing within the molecular unit thereof at least one reactive group selected from the class consisting of aziridine group, oxazoline group. N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black. The polymer can be used as a toner for electrostatically charged image, resin composition, coating composition, ink for thermographic transer, coating gent for magnetic recording medium, rubber composition, and carbon black dispersion and the like.Type: GrantFiled: December 16, 1987Date of Patent: November 14, 1989Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Yoshikuni Mori, Mitsuo Kushino, Hayato Ikeda, Nobuaki Urashima, Masuji Izubayashi, Shigeru Tanimori, Yoshihiro Arita, Kiyoshi Kawamura, Kenji Minami, Yoshinori Sano
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Patent number: 4880361Abstract: A multi-piston swash plate type compressor for an air-conditioning system used in a vehicle such as an automobile, the compressor having combined cylinder blocks closed, at both axial end faces thereof, by front and rear housings each having a radially inner suction chamber and an outer discharge chamber isolated from the suction chamber, valve plates interposed between the axial end faces of the combined cylinder blocks and the front and rear housings, respectively, a plurality of elongated screw bolts axially and hermetically assembling the combined cylinder blocks, the front and rear housings and the valve plates, and an internal sealing and guiding unit arrnaged in the suction chambers of the front and rear housings for rigidly holding the valve plates against a high pressure of a refrigerant after compression, to reinforce the hermetic seal between the axial end faces of the combined cylinder blocks and the valve plates, and for guiding refrigerant flows within the suction chamber to provide a uniform diType: GrantFiled: May 12, 1988Date of Patent: November 14, 1989Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Hayato Ikeda, Kazuhiro Ohta, Hisato Kawamura
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Patent number: 4867650Abstract: A reciprocatory piston type compressor having a cylinder block in which a plurality of compression chambers permit a plurality of reciprocatory pistons to be reciprocated so as to compress a refrigerant gas drawn from a suction chamber formed in an end housing into the compression chambers through suction ports of a valve plate, opened and closed by a suction valve mechanism with a plurality of resilient radial suction valves having a free end thereof, respectively, and surrounded by cutoff slots formed in a suction valve sheet, and to discharge the compressed refrigerant gas from the compression chambers into a discharge chamber formed in the end housing through discharge ports of the valve plate, opened and closed by resilient discharge valves.Type: GrantFiled: April 13, 1988Date of Patent: September 19, 1989Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Hayato Ikeda, Hideo Mori, Toshinari Mizutani
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Patent number: 4863356Abstract: A multi-cylinder piston-operated compressor having a combined cylinder block closed on both axial ends by front and rear housing and provided therein with a reciprocative piston mechanism, for sucking, compressing, and discharging a refrigerant gas, and a connecting flange, from which the refrigerant gas after compression is sent toward a cooling circuit. The connecting flange defines a muffling chamber in cooperation with a circumferential section of the combined cylinder block for suppressing the pulsation in discharge pressure of the refrigerant gas. The compressor further has a gas expansion chamber in which an expansion and a partial collision of the compressed refrigerant gas spouted from orifices take plate to weaken the pulsation in the discharge pressure of the gas with the least discharge loss.Type: GrantFiled: March 9, 1988Date of Patent: September 5, 1989Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Hayato Ikeda, Tatsuyuki Hoshino, Masahiro Sawada
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Patent number: 4836754Abstract: A multi-cylinder piston type compressor having an axially extending cylinder block with cylinder bores formed therein and closed on at least one axial end by a housing defining therein suction and discharge chambers and provided therein with a reciprocative piston mechanism for drawing, compressing, and discharging a refrigerant gas. The compressor also has a valve plate member arranged between the cylinder block and the housing for defining therein suction ports and discharge ports, a suction valve sheet member defining therein suction valves openably closing the suction ports and discharge apertures for introducing the refrigerant gas after compression from the cylinder bores into the discharge chamber of the housing via the discharge port of the valve plate member. The compressor also has an internal pulsation and noise suppression unit provided by extensions formed in the suction valve sheet member and adjacent to the discharge ports of the valve plate member.Type: GrantFiled: November 2, 1987Date of Patent: June 6, 1989Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Hayato Ikeda, Satoshi Kitahama, Hiroshi Onomura
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Patent number: 4813852Abstract: A compressor comprising a cylinder block having a plurality of compression chambers and a housing having a discharge chamber and an outlet port. The housing is mounted on the cylinder block through a valve plate having discharge ports for discharging fluid from the compression chambers into the discharge chamber. At least one bulkhead wall is provided in the housing, extending from a position near at least one of the discharge ports toward the outlet port for separating the at least one discharge port and an adjacent discharge port.Type: GrantFiled: March 9, 1988Date of Patent: March 21, 1989Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Hayato Ikeda, Isao Tsuzuki, Kazuhiro Ohta
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Patent number: 4789311Abstract: A swash plate type refrigerant compressor having a swash plate supported on a rotatable drive shaft, a plurality of double-headed pistons engaged with the swash plate so as to be reciprocated in cylinder bores of the compressor is disclosed herein. The swash plate has formed round and throughout its circumferential periphery an annular groove. An annular ring member is received in the groove, said ring member having an outer diameter larger than the diameter of said swash plate and forming with the bottom annular surface of said groove a substantially annular clearance at least during the operation of the compressor.Type: GrantFiled: December 17, 1987Date of Patent: December 6, 1988Assignee: Kabushiki Kaisha Toyoda jidoshokki SeisakushoInventors: Hayato Ikeda, Kazuaki Iwama, Satoshi Kitahama
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Patent number: 4781539Abstract: A swash plate type compressor having a pair of axially combined front and rear cylinder blocks forming therein a plurality of cylinder bores and a swash plate chamber into which an oil-contained refrigerant is introduced from an air-conditioning circuit, a drive shaft centrally rotatably mounted in the combined cylinder block, a swash plate having sliding contact faces oblique to an axis of the drive shaft, and supported on the drive shaft so that the swash plate is rotated within the swash plate chamber, compressing double-headed pistons slidably fitted in the cylinder bores, shoes intervened between the swash plate and the pistons for causing reciprocating motions of the pistons in response to rotating motion of the swash plate, and a shoe and swash plate lubricator for constantly supplying a lubricating oil component contained in the refrigerant gas between the swash plate and the shoes.Type: GrantFiled: June 11, 1987Date of Patent: November 1, 1988Assignee: Kabushiki Kaisha Toyoda Jikoshokki SeisakushoInventors: Hayato Ikeda, Satoshi Kitahama
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Patent number: 4781540Abstract: A piston type compressor having a cylinder block in which a plurality of compression chambers permitting a plurality of pistons to be reciprocated so as to compress a refrigerant gas pumped from a suction chamber formed in an end housing into the compression chambers through suction ports of a valve plate, openably closed by a suction valve mechanism with a plurality of suction reed valves, and to discharge the compressed refrigerant gas from the compression chambers into a discharge chamber formed in the end housing through discharge ports of the valve plate, are openably closed by a discharge valve mechanism having a plurality of discharge reed valves.Type: GrantFiled: December 3, 1986Date of Patent: November 1, 1988Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Hayato Ikeda, Mitsuhiro Oiwa, Satoshi Kitahama, Hiroshi Onomura, Masahiro Sawada