Patents by Inventor Katsuki Asagiri
Katsuki Asagiri 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: 9260077Abstract: A pretensioner comprising a gas generating unit; a pretensioner body to whose inside the gas is supplied; a spool driving member disposed inside the pretensioner body and causing a spool to rotate to retract webbing onto the spool; a gas flow rate adjusting portion disposed in the spool driving member and whose inner peripheral shape is set in accordance with a flow rate of the gas to be passed through the gas flow rate adjusting portion; and a filter unit having a vent portion that is communicated with a space between the gas generating unit and the spool driving member and is also communicated with the gas flow rate adjusting portion. The open shape of the gas flow rate adjusting portion has a portion that does not coincide in a plan view with the open shape of the vent portion, and the overall open area of the vent portion is set larger than the open area of the gas flow rate adjusting portion.Type: GrantFiled: December 19, 2011Date of Patent: February 16, 2016Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHOInventors: Tomonori Nagata, Shinichi Okubo, Masaru Ukita, Katsuki Asagiri, Yasutaka Watanabe, Keiichi Kato, Yusuke Hirokawa, Hiroaki Yamazoe
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Patent number: 8376406Abstract: A pretensioner mechanism comprising webbing capable of restraining a vehicle occupant; a cylinder member into which gas is supplied when specific conditions occur; a movement member provided so as to be capable of moving inside the cylinder member, the movement member being formed with a communication hole that communicates a first side and a second side of the movement member; a closure member that is inserted into the communication hole and substantially closes off the communication hole to such an extent that pressure from the gas supplied into the cylinder member causes the movement member to move towards the first side and the restraining force of the webbing on the occupant is increased; and a communication groove formed between the communication hole and the closure member to communicate a first side of the closure member with a second side of the closure member.Type: GrantFiled: July 8, 2011Date of Patent: February 19, 2013Assignee: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventors: Tomonori Nagata, Katsuki Asagiri
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Publication number: 20120160947Abstract: A pretensioner comprising a gas generating unit; a pretensioner body to whose inside the gas is supplied; a spool driving member disposed inside the pretensioner body and causing a spool to rotate to retract webbing onto the spool; a gas flow rate adjusting portion disposed in the spool driving member and whose inner peripheral shape is set in accordance with a flow rate of the gas to be passed through the gas flow rate adjusting portion; and a filter unit having a vent portion that is communicated with a space between the gas generating unit and the spool driving member and is also communicated with the gas flow rate adjusting portion. The open shape of the gas flow rate adjusting portion has a portion that does not coincide in a plan view with the open shape of the vent portion, and the overall open area of the vent portion is set larger than the open area of the gas flow rate adjusting portion.Type: ApplicationFiled: December 19, 2011Publication date: June 28, 2012Applicant: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHOInventors: Tomonori NAGATA, Shinichi OKUBO, Masaru UKITA, Katsuki ASAGIRI, Yasutaka WATANABE, Keiichi KATO, Yusuke HIROKAWA, Hiroaki YAMAZOE
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Patent number: 8196962Abstract: In the present pretensioner, press contact portions are formed further to a side of an open end of a packing housing section than central portions of opposing faces along a depth direction of the packing housing section. Accordingly, when a packing is being fitted into the packing housing section, no great resistance is imparted to a curved face side of the packing from a press contact wall of a housing section body and the opposing face, and the packing is fitted comparatively smoothly therein. Consequently, even when fitting the packing into the packing housing section, a packing main body is largely resilient-deformed, such that a large collapse in a through hole can be prevented, and the sealing ability of the seal due to deformation of the packing main body can be effectively enhanced.Type: GrantFiled: September 15, 2010Date of Patent: June 12, 2012Assignee: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventors: Motoki Sugiyama, Seiji Hori, Tomonori Nagata, Tetsushi Muromachi, Masaru Ukita, Katsuki Asagiri, Tomohiro Okuhira, Naoki Urakawa
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Publication number: 20120013111Abstract: A pretensioner mechanism comprising webbing capable of restraining a vehicle occupant; a cylinder member into which gas is supplied when specific conditions occur; a movement member provided so as to be capable of moving inside the cylinder member, the movement member being formed with a communication hole that communicates a first side and a second side of the movement member; a closure member that is inserted into the communication hole and substantially closes off the communication hole to such an extent that pressure from the gas supplied into the cylinder member causes the movement member to move towards the first side and the restraining force of the webbing on the occupant is increased; and a communication groove formed between the communication hole and the closure member to communicate a first side of the closure member with a second side of the closure member.Type: ApplicationFiled: July 8, 2011Publication date: January 19, 2012Applicant: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHOInventors: Tomonori NAGATA, Katsuki ASAGIRI
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Patent number: 8028949Abstract: In a webbing take-up device 10, a worm gear 34, which is connected to a motor 44, engages with a gear wheel 32, and when the worm gear 34 rotates, driving force is transmitted via the gear wheel 32 and a clutch 26, whereby a take-up shaft 20 is rotated in a take-up direction. Helix angles of teeth of the worm gear 34 and the gear wheel 32 are set so that thrust force generated at this time along the axial direction of the gear wheel 32 faces a leg plate 16 fixed side of a case 30. Accordingly, because the thrust force acts on the leg plate 16 fixed side of the case 30, i.e., on a frame 12, there is no need to provide the case 30 or a cover clutch 31 with high strength and rigidity.Type: GrantFiled: March 17, 2005Date of Patent: October 4, 2011Assignee: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventors: Takuhiro Saito, Katsuki Asagiri
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Patent number: 7980503Abstract: To obtain a webbing take-up device that can not only transmit to a take-up shaft only rotation from a motor by a clutch but is also simple and compact. A clutch of this webbing take-up device has a simply configuration where sliders 144 of a clutch body portion 114 are caused by frictional force to be retained in a case, whereby the sliders 144 and lock bars 154 are caused to relatively move and the lock bars 154 are caused by this relative movement to move to positions where they engage with or disengage from a ratchet 134. Consequently, the overall configuration of a clutch 100 can be made significantly compact (thinned) in comparison to a configuration that causes a pawl to move using an inertial disk that is large and has weight as in a conventional clutch. Thus, the overall configuration of a webbing take-up device 10 can be made compact.Type: GrantFiled: August 26, 2010Date of Patent: July 19, 2011Assignee: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventors: Takuhiro Saito, Katsuki Asagiri, Shinji Mori
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Patent number: 7934673Abstract: To obtain a webbing take-up device that can not only transmit to a take-up shaft only rotation from a motor by a clutch but is also simple and compact. A clutch of this webbing take-up device has a simply configuration where sliders 144 of a clutch body portion 114 are caused by frictional force to be retained in a case, whereby the sliders 144 and lock bars 154 are caused to relatively move and the lock bars 154 are caused by this relative movement to move to positions where they engage with or disengage from a ratchet 134. Consequently, the overall configuration of a clutch 100 can be made significantly compact (thinned) in comparison to a configuration that causes a pawl to move using an inertial disk that is large and has weight as in a conventional clutch. Thus, the overall configuration of a webbing take-up device 10 can be made compact.Type: GrantFiled: March 10, 2005Date of Patent: May 3, 2011Assignee: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventors: Takuhiro Saito, Katsuki Asagiri, Shinji Mori
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Publication number: 20110068614Abstract: In the present pretensioner, press contact portions are formed further to a side of an open end of a packing housing section than central portions of opposing faces along a depth direction of the packing housing section. Accordingly, when a packing is being fitted into the packing housing section, no great resistance is imparted to a curved face side of the packing from a press contact wall of a housing section body and the opposing face, and the packing is fitted comparatively smoothly therein. Consequently, even when fitting the packing into the packing housing section, a packing main body is largely resilient-deformed, such that a large collapse in a through hole can be prevented, and the sealing ability of the seal due to deformation of the packing main body can be effectively enhanced.Type: ApplicationFiled: September 15, 2010Publication date: March 24, 2011Applicant: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHOInventors: Motoki SUGIYAMA, Seiji HORI, Tomonori NAGATA, Tetsushi MUROMACHI, Masaru UKITA, Katsuki ASAGIRI, Tomohiro OKUHIRA, Naoki URAKAWA
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Publication number: 20100314478Abstract: To obtain a webbing take-up device that can not only transmit to a take-up shaft only rotation from a motor by a clutch but is also simple and compact. A clutch of this webbing take-up device has a simply configuration where sliders 144 of a clutch body portion 114 are caused by frictional force to be retained in a case, whereby the sliders 144 and lock bars 154 are caused to relatively move and the lock bars 154 are caused by this relative movement to move to positions where they engage with or disengage from a ratchet 134. Consequently, the overall configuration of a clutch 100 can be made significantly compact (thinned) in comparison to a configuration that causes a pawl to move using an inertial disk that is large and has weight as in a conventional clutch. Thus, the overall configuration of a webbing take-up device 10 can be made compact.Type: ApplicationFiled: August 26, 2010Publication date: December 16, 2010Applicant: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHOInventors: Takuhiro SAITO, Katsuki ASAGIRI, Shinji MORI
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Patent number: 7735767Abstract: A webbing take-up device (10, 100) is disclosed, wherein a motor (44) is provided directly below a take-up shaft (20) between a pair of leg plates (16, 18) with a rotary shaft (50) of the motor (44) disposed perpendicularly to the take-up shaft (20), and a clutch (26) is provided at one side of one leg plate (16). Further, a gear (76) of a motor gear portion (46) is removably connected to a worm gear (34) in a clutch gear portion (28), and a mounting stay (84) is detachably attached to a case (30) with screws (86), so that the motor (44) and the motor gear portion (46) can be detached independently of the case (30) while still being assembled together. Still further, a pretensioner mechanism (156) and a sensor mechanism (182) are provided at one end side of a spool (118), and an urging mechanism (136) is disposed at the other end side thereof.Type: GrantFiled: March 7, 2005Date of Patent: June 15, 2010Assignee: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventors: Takuhiro Saito, Katsuki Asagiri, Shuichi Harada, Shinji Mori, Fuminori Komiya, Tomonori Kimura, Hitoshi Takamatsu, Tomonori Nagata, Kazuhiko Aihara, Masaki Yasuda
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Patent number: 7533842Abstract: A clutch 100 of the present webbing retractor has a gear wheel 116 and spring claws 182, and has peripheral direction load receiving portions 120 at the gear wheel 116, and load from the spring claws 182 is applied along a peripheral direction via the peripheral direction load receiving portions 120. Therefore, compactness and weight reduction of the clutch 100 can be aimed for. Further, the clutch 100 has a ring 176, and the ring 176 integrally has a cover portion 178 holding respective clutch structural members at predetermined assembly positions, and the spring claws 182, and is held integrally with a rotor 124 by elastic forces of the spring claws 182. In this way, the respective clutch structural members can be temporarily held (sub-assembled) integrally.Type: GrantFiled: March 31, 2005Date of Patent: May 19, 2009Assignee: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventors: Takuhiro Saito, Katsuki Asagiri, Shinji Mori, Tomonori Kimura
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Publication number: 20080283652Abstract: In a webbing take-up device 10, a worm gear 34, which is connected to a motor 44, engages with a gear wheel 32, and when the worm gear 34 rotates, driving force is transmitted via the gear wheel 32 and a clutch 26, whereby a take-up shaft 20 is rotated in a take-up direction. Helix angles of teeth of the worm gear 34 and the gear wheel 32 are set so that thrust force generated at this time along the axial direction of the gear wheel 32 faces a leg plate 16 fixed side of a case 30. Accordingly, because the thrust force acts on the leg plate 16 fixed side of the case 30, i.e., on a frame 12, there is no need to provide the case 30 or a cover clutch 31 with high strength and rigidity.Type: ApplicationFiled: March 17, 2005Publication date: November 20, 2008Applicant: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHOInventors: Takuhiro Saito, Katsuki Asagiri
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Publication number: 20080252060Abstract: [Problem] To obtain a webbing take-up device that can not only transmit to a take-up shaft only rotation from a motor by a clutch but is also simple and compact. [Solution] A clutch of this webbing take-up device has a simply configuration where sliders 144 of a clutch body portion 114 are caused by frictional force to be retained in a case, whereby the sliders 144 and lock bars 154 are caused to relatively move and the lock bars 154 are caused by this relative movement to move to positions where they engage with or disengage from a ratchet 134. Consequently, the overall configuration of a clutch 100 can be made significantly compact (thinned) in comparison to a configuration that causes a pawl to move using an inertial disk that is large and has weight as in a conventional clutch. Thus, the overall configuration of a webbing take-up device 10 can be made compact.Type: ApplicationFiled: March 10, 2005Publication date: October 16, 2008Applicant: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventors: Takuhiro Saito, Katsuki Asagiri, Shinji Mori
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Publication number: 20080054117Abstract: A webbing retractor 10 has a structure in which a housing 48, to which a motor 44 is attached, faces in an axial direction of a worm gear 34, and is assembled and fixed to an end face of a case 30 which is orthogonal to a direction of thickness of the case 30, in which a clutch 26 which is attached in a joined state to a side face of one leg plate 16 is accommodated, and at an opposite side from a back plate 14. Moreover, this is a structure in which a rotation shaft of the motor 44 is between the leg plate 16 and a leg plate 18 in a state of being orthogonal to a winding shaft 20, and the motor 44 is disposed directly below the winding shaft 20.Type: ApplicationFiled: September 29, 2005Publication date: March 6, 2008Applicant: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHOInventors: Katsuki Asagiri, Takuhiro Saito, Kiyomi Shikata, Katsuhiro Okumura, Takeaki Kato, Takuya Nezaki
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Publication number: 20070284870Abstract: A clutch 100 of the present webbing retractor has a gear wheel 116 and spring claws 182, and has peripheral direction load receiving portions 120 at the gear wheel 116, and load from the spring claws 182 is applied along a peripheral direction via the peripheral direction load receiving portions 120. Therefore, compactness and weight reduction of the clutch 100 can be aimed for. Further, the clutch 100 has a ring 176, and the ring 176 integrally has a cover portion 178 holding respective clutch structural members at predetermined assembly positions, and the spring claws 182, and is held integrally with a rotor 124 by elastic forces of the spring claws 182. In this way, the respective clutch structural members can be temporarily held (sub-assembled) integrally.Type: ApplicationFiled: March 31, 2005Publication date: December 13, 2007Inventors: Takuhiro Saito, Katsuki Asagiri, Shinji Mori, Tomonori Kimura
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Publication number: 20070278338Abstract: A webbing take-up device (10, 100) is disclosed, wherein a motor (44) is provided directly below a take-up shaft (20) between a pair of leg plates (16, 18) with a rotary shaft (50) of the motor (44) disposed perpendicularly to the take-up shaft (20), and a clutch (26) is provided at one side of one leg plate (16). Further, a gear (76) of a motor gear portion (46) is removably connected to a worm gear (34) in a clutch gear portion (28), and a mounting stay (84) is detachably attached to a case (30) with screws (86), so that the motor (44) and the motor gear portion (46) can be detached independently of the case (30) while still being assembled together. Still further, a pretensioner mechanism (156) and a sensor mechanism (182) are provided at one end side of a spool (118), and an urging mechanism (136) is disposed at the other end side thereof.Type: ApplicationFiled: March 7, 2005Publication date: December 6, 2007Applicant: KABUSHIKI KAISHA TOKAI-RIKE-DENKI-SEISAKUSHOInventors: Takuhiro Saito, Katsuki Asagiri, Shuichi Harada, Shinji Mori, Fuminori Komiya, Tomonori Kimura, Hitoshi Takamatsu, Tomonori Nagata, Kazuhiko Aihara, Masaki Yasuda
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Publication number: 20070246593Abstract: A webbing retractor which allows one-way transmission of rotation from a motor by using a clutch, as well as achieving improved operation of pulling-out and taking-up of the webbing in ordinary use. In the clutch 100 of the present webbing retractor, a clutch main body 114 is not supported by a spool 20, but by a case (a clutch case 101 and a clutch cover 102) with a spindle 133 provided at an accommodating portion 132 of a rotor 124 at one side in an axial direction the spindle 133 being rotatably supported in a round hole 135 of the clutch cover 102 via a rotation support portion 175 of a holder 170, and with the accommodating portion 132 at the other side in the axial direction being rotatably supported by the clutch case 101 via a busing 112.Type: ApplicationFiled: March 10, 2005Publication date: October 25, 2007Applicant: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventors: Katsuki Asagiri, Shinji Mori, Takuhiro Saito
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Patent number: 6834821Abstract: A webbing retractor is provided. When assembled, due to a positional relationship which is such that insert-in portions are formed between a tubular portion of a lock base and a spool shaft, grooves are formed at the tubular portion and a portion of the spool shaft. An elastically deformable terminal end portion is formed at a stopper which is press-fit into an insert-in hole. In a state in which the stopper also is installed, not only press-in load in a thrusting direction, but also press-in load in a radial direction is applied between the lock base and a spool such that a structure is fixed.Type: GrantFiled: November 13, 2002Date of Patent: December 28, 2004Assignee: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventors: Tomonori Nagata, Kazuhiko Aihara, Katsuki Asagiri, Yasuho Kitazawa
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Patent number: 6676058Abstract: A webbing retractor is provided. A wire for increasing force limiter load spans between a spool and a lock base. A concave groove is formed in one end portion of the wire. A push nut of a lock plate cover engages with the concave groove and the wire is fixed. One engagement piece of the push nut is longer than other engagement pieces so as to push the one end portion of the wire toward the other engagement pieces.Type: GrantFiled: October 29, 2002Date of Patent: January 13, 2004Assignee: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventors: Tomonori Nagata, Katsuki Asagiri, Yasuho Kitazawa, Kazuhiko Aihara, Kenji Gotou