Patents by Inventor Kazuhiko Takemoto
Kazuhiko Takemoto 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: 11520251Abstract: A developing device includes a developer carrier to carry a developer, and a developer conveyor to supply the developer to the developer carrier. The developer conveyor includes a shaft extending in an axial direction to rotate in a rotational direction, a helical blade having a conveying surface to convey the developer around the shaft along the axial direction, and a protrusion attached to a rear surface of the helical blade, which faces the conveying surface, and having a leading surface extending from an upstream end to a downstream end in the rotational direction of the shaft.Type: GrantFiled: June 23, 2020Date of Patent: December 6, 2022Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventor: Kazuhiko Takemoto
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Patent number: 11474453Abstract: An imaging system comprises a stirring-conveyance member to supply developer to a developing roller. The stirring-conveyance member includes a spiral structure to convey the developer and a reverse spiral structure disposed downstream the spiral structure in a conveying direction of the developer. The reverse spiral structure has a maximum outer diameter at an upstream end in the conveying direction and a minimum outer diameter at a downstream end in the conveying direction. The minimum outer diameter is approximately ? or less, of the maximum outer diameter.Type: GrantFiled: September 9, 2019Date of Patent: October 18, 2022Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Kazuhiko Takemoto, Takahiko Kimura
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Publication number: 20220137530Abstract: An imaging system includes a stirring device to stir a developer, a rotatable developer carrier to carry the developer a non-magnetic regulator, a secondary regulator, an excess developer conveyance path extending from the developer carrier and between the non-magnetic regulator and the secondary regulator, a toner supply path to supply a toner to the stirring device, and a merging portion where the toner supply path and the excess developer conveyance path merge. The non-magnetic regulator and the secondary regulator regulate the thickness of the developer carried by the developer carrier. Excess developer from the developer carrier is conveyed via the excess developer conveyance path. The merging region controls the supply of the toner from the toner supply path to the stirring device based, at least in part, on an amount of the excess developer received from the excess developer conveyance path.Type: ApplicationFiled: June 17, 2020Publication date: May 5, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Kiyofumi Morimoto, Kazuhiko Takemoto
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Publication number: 20220107588Abstract: An image forming system includes a developer carrier and a developer conveyor that supplies a developer to the developer carrier. The developer conveyor includes a shaft extending in an axial direction, a helical blade and a protrusion around the shaft.Type: ApplicationFiled: June 23, 2020Publication date: April 7, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventor: Kazuhiko Takemoto
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Patent number: 11162463Abstract: A first fuel storage portion is disposed on the upstream side of a fuel supply device of an engine so as to be contiguous with an air-intake passage of the fuel supply device. A blow-back suppression plate for suppressing blow-back from the air-intake passage is disposed between a filter element and the first fuel storage portion of an air cleaner. A suction-back passage is formed such that fuel accumulated in a fuel accumulation portion in the air cleaner is suctioned back through the suction-back passage into the air-intake passage. The suction-back passage allows communication between the fuel accumulation portion in the air cleaner and a suction-back port formed at the downstream-side end of the first fuel storage portion.Type: GrantFiled: November 11, 2019Date of Patent: November 2, 2021Inventors: Hideshi Miyazaki, Kazuhiko Takemoto
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Publication number: 20210333726Abstract: An imaging system comprises a stirring-conveyance member to supply developer to a developing roller. The stirring-conveyance member includes a spiral structure to convey the developer and a reverse spiral structure disposed downstream the spiral structure in a conveying direction of the developer. The reverse spiral structure has a maximum outer diameter at an upstream end in the conveying direction and a minimum outer diameter at a downstream end in the conveying direction. The minimum outer diameter is approximately ? or less, of the maximum outer diameter.Type: ApplicationFiled: September 9, 2019Publication date: October 28, 2021Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Kazuhiko TAKEMOTO, Takahiko KIMURA
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Patent number: 11066332Abstract: According to the present invention, a dielectric ceramic composition, which can be fired in a reducing atmosphere, has a high dielectric constant, has an electrostatic capacity exhibiting little change, when used as a dielectric layer of a ceramic electronic component such as a laminated ceramic capacitor even under a condition of 150 to 200° C., and has small dielectric losses at 25° C. and 200° C., can be provided.Type: GrantFiled: October 11, 2017Date of Patent: July 20, 2021Assignee: SHOEI CHEMICAL INC.Inventors: Takeshi Nomura, Atsushi Nemoto, Yukari Sasaki, Kazuhiko Takemoto, Naomi Kinoshita, Yumi Takahashi
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Publication number: 20200072171Abstract: A first fuel storage portion is disposed on the upstream side of a fuel supply device of an engine so as to be contiguous with an air-intake passage of the fuel supply device. A blow-back suppression plate for suppressing blow-back from the air-intake passage is disposed between a filter element and the first fuel storage portion of an air cleaner. A suction-back passage is formed such that fuel accumulated in a fuel accumulation portion in the air cleaner is suctioned back through the suction-back passage into the air-intake passage. The suction-back passage allows communication between the fuel accumulation portion in the air cleaner and a suction-back port formed at the downstream-side end of the first fuel storage portion.Type: ApplicationFiled: November 11, 2019Publication date: March 5, 2020Inventors: Hideshi Miyazaki, Kazuhiko Takemoto
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Publication number: 20190241476Abstract: According to the present invention, a dielectric ceramic composition, which can be fired in a reducing atmosphere, has a high dielectric constant, has an electrostatic capacity exhibiting little change, when used as a dielectric layer of a ceramic electronic component such as a laminated ceramic capacitor even under a condition of 150 to 200° C., and has small dielectric losses at 25° C. and 200° C., can be provided.Type: ApplicationFiled: October 11, 2017Publication date: August 8, 2019Inventors: Takeshi Nomura, Atsushi Nemoto, Yukari Sasaki, Kazuhiko Takemoto, Naomi Kinoshita, Yumi Takahashi
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Patent number: 8515319Abstract: A developing unit includes: a cylindrical magnetic member having plural magnetic poles in a circumferential direction, the magnetic poles including a first pole attracting developer and a second pole not attracting developer; a developer holding member having the cylindrical magnetic member therein and conveying developer magnetically attracted by the cylindrical magnetic member on a surface thereof in a direction toward a predetermined area where developer is not attracted by a magnetic field caused by the second pole; a peeling member provided in the predetermined area and peeling off the developer attracted at an end portion of the developer holding member in an axial direction; and a second magnetic member provided on at least one of an upstream side and a downstream side of the peeling member, disposed in a position with a gap from the surface of the developer holding member and opposed to the predetermined area.Type: GrantFiled: September 14, 2010Date of Patent: August 20, 2013Assignee: Fuji Xerox Co., Ltd.Inventor: Kazuhiko Takemoto
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Publication number: 20110222919Abstract: A developing unit includes: a cylindrical magnetic member having plural magnetic poles in a circumferential direction, the magnetic poles including a first pole attracting developer and a second pole not attracting developer; a developer holding member having the cylindrical magnetic member therein and conveying developer magnetically attracted by the cylindrical magnetic member on a surface thereof in a direction toward a predetermined area where developer is not attracted by a magnetic field caused by the second pole; a peeling member provided in the predetermined area and peeling off the developer attracted at an end portion of the developer holding member in an axial direction; and a second magnetic member provided on at least one of upstream and downstream in the direction from the peeling member, disposed in a position with a gap from the surface of the developer holding member and opposed to the predetermined area.Type: ApplicationFiled: September 14, 2010Publication date: September 15, 2011Applicant: FUJI XEROX CO., LTD.Inventor: Kazuhiko TAKEMOTO
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Patent number: 7096850Abstract: To provide a four-cycle combustion engine wherein the air-fuel mixture can be smoothly passed at all times by the utilization of the reciprocating motion of the piston to effectively lubricate the valve operating mechanism and the cranking mechanism and also to allow the air-fuel mixture to be supplied into the combustion chamber with a high suction efficiency. By utilization of the reciprocating motion of the piston (9), a portion of the air-fuel mixture (M) fed from the intake passage (33) is circulated through a circulating passage made up of the valve chamber (18), the first passage (24), the crankcase chamber (7) and the second passage (41).Type: GrantFiled: January 12, 2004Date of Patent: August 29, 2006Assignee: Kawasaki Jukogyo Kabushika KaishaInventors: Tadao Yashirodai, Kazuhiko Takemoto
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Publication number: 20040144344Abstract: To provide a four-cycle combustion engine wherein the air-fuel mixture can be smoothly passed at all times by the utilization of the reciprocating motion of the piston to effectively lubricate the valve operating mechanism and the cranking mechanism and also to allow the air-fuel mixture to be supplied into the combustion chamber with a high suction efficiency, the four-cycle combustion engine includes a valve operating mechanism (30) including a valve drive unit (23) for driving intake and exhaust valves (19, 20) and a drive transmitting unit (29) for transmitting a rotary drive of a crankshaft (8) to the valve drive unit (23), a valve chamber (18) accommodating the valve drive unit (23) and communicated with an intake port (40), an intake passage (33) through which an air-fuel mixture (M) containing a lubricant oil is introduced into the valve chamber (18), a first passage (24) accommodating the drive transmitting unit (29) and connecting between the valve chamber (18) and the crankcase chamber (7), and a sType: ApplicationFiled: January 12, 2004Publication date: July 29, 2004Inventors: Tadao Yashirodai, Kazuhiko Takemoto
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Patent number: 6659188Abstract: A hand-held edger capable of suppressing wear of a cover without an increase in the number of parts. The hand-held edger comprises a main rod supported by an operator's hand; a gear case supported at one end portion of the main rod; a rotating blade connected to a gear in the gear case; a power unit mounted to the other end portion of the main rod, for driving the rotating blade via the gear in the gear case; a resin-made cover attached to a flange of the gear case, for covering the rotating blade; and a wheel supported by the cover, and an outer periphery of the flange is coplanar with the periphery of at least the lowermost portion of the cover or diametrically outwardly protruded therefrom.Type: GrantFiled: February 1, 2002Date of Patent: December 9, 2003Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Kazuhiko Takemoto, Yoshiro Yamane, Tadao Yashirodai
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Patent number: 6497044Abstract: A cutting blade cover for a brush cutter comprises a central portion (50), a first blade accommodating portion (28), a second blade accommodating portion (29), and a third blade accommodating portion (30). The first, second, and third blade accommodating portions (28, 29, 30) are provided radially from the central portion (50). The first blade accommodating portion (28) includes a first concave portion (31). The second blade accommodating portion (29) includes a second concave portion (36). The third blade accommodating portion (30) includes a third concave portion (40). The first concave portion 31 has an inner shape conforming to an outer shape of the first blade (17) to cover an outer periphery of the first blade (17). The second concave portion (36) has an inner shape conforming to an outer shape of the second blade (18) to cover an outer periphery of the second blade (18).Type: GrantFiled: November 30, 2000Date of Patent: December 24, 2002Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yoshiro Yamane, Tadao Yashirodai, Kazuhiko Takemoto
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Patent number: 6487777Abstract: A cutting blade cover(10) is used for protecting a cutting blade(11) having a shank member(16) connected to a driving unit of a reaper and a plate-shaped blade member(17) continuous with the shank member(16) and provided with a cutting portion(18) at a tip portion thereof that is orthogonal to the shank member(16). The cutting blade cover(10) comprises a bag-shaped accommodating portion(24) for accommodating the cutting portion(18) provided at the tip portion of the plate-shaped blade member(17) and a shank retaining portion(25) for retaining the shank member(16).Type: GrantFiled: November 16, 2000Date of Patent: December 3, 2002Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yoshiro Yamane, Tadao Yashirodai, Kazuhiko Takemoto
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Patent number: 6484815Abstract: In a conventional impact generator, a grease receives centrifugal force by the rotation of a rotary member, thereby keeping away from surfaces of the rotary member and a weight. Consequently, insufficient lubrication is caused between the weight and a member (for example, a tappet and the like) which comes in contact with the weight. An impact generator D comprises an impregnating member 60 capable of impregnating the grease. The impregnating member 60 is extended from a vicinity of an inner peripheral wall surface 59 of a chamber E1 for accommodating a rotary member 10 and a weight 30 to a position where the impregnating member 60 comes in contact with the weight 30 performing a circular motion.Type: GrantFiled: April 21, 2000Date of Patent: November 26, 2002Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yoshiro Yamane, Kazuhiko Takemoto, Tadao Yashirodai
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Patent number: 6481509Abstract: In a conventional impact generator, a great shock is generated when a weight collides with a rotary member, and a rotary shaft of the rotary member and a bearing supporting the rotary shaft receive the great shock. Therefore, it is necessary to employ a bearing having a great load capacity. Furthermore, great vibrations and noises are also generated in the impact generator. A rotary member (10) is rotatably supported by rotary shafts (11) and (12). A weight (30) is movably held by the rotary member (10). A shock absorber (40) for absorbing, by elastic force, a shock generated between the weight (30) and the rotary member (10) is provided between the weight (30) and the rotary member (10).Type: GrantFiled: April 21, 2000Date of Patent: November 19, 2002Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yoshiro Yamane, Kazuhiko Takemoto, Tadao Yashirodai
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Publication number: 20020104663Abstract: Disclosed is a hand-held edger capable of suppressing wear of a cover without an increase in the number of parts. The hand-held edger comprises: a main rod supported by an operator's hand; a gear case supported at one end portion of the main rod; a rotating blade connected to a gear in the gear case; a power unit mounted to the other end portion of the main rod, for driving the rotating blade via the gear in the gear case; a resin-made cover attached to a flange of the gear case, for covering the rotating blade; and a wheel supported by the cover, and an outer periphery of the flange is coplanar with the periphery of at least the lowermost portion of the cover or diametrically outwardly protruded therefrom.Type: ApplicationFiled: February 1, 2002Publication date: August 8, 2002Inventors: Kazuhiko Takemoto, Yoshiro Yamane, Tadao Yashirodai
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Patent number: D475256Type: GrantFiled: January 18, 2001Date of Patent: June 3, 2003Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yoshiro Yamane, Tadao Yashirodai, Kazuhiko Takemoto