Patents by Inventor Osamu SAWAI
Osamu SAWAI 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: 11247554Abstract: There is provided a high pressure container including (i) a plurality of container bodies, each of the container bodies housing a fluid in a high pressure state and being able to release the fluid through a release portion, (ii) an opening section that is linked to the container bodies, and that opens at or above a predetermined opening temperature to release the fluid inside the container bodies, and (iii) a cover member that straddles the plurality of container bodies, that covers at least a portion of the plurality of container bodies, that is able to withstand a temperature of no less than the opening temperature, that is linked to the opening section, and that is capable of transmitting heat to the opening section.Type: GrantFiled: July 31, 2018Date of Patent: February 15, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Osamu Sawai
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Publication number: 20210237562Abstract: A high-pressure vessel mounting structure includes: a plurality of high-pressure vessels arranged on the upper surface of a bottom wall in a front-rear direction of a vehicle body with a vehicle width direction as an axial direction; a plurality of load transmission members each provided between the high-pressure vessels on the bottom wall and extending along the axial direction; a connection member that connects one axial end of each of the high-pressure vessels; and a support member that supports the other axial end of each of the high-pressure vessels, and the support member can move relatively inward in the vehicle width direction with respect to the high-pressure vessel when a load is input from outside in the vehicle width direction.Type: ApplicationFiled: November 2, 2020Publication date: August 5, 2021Inventor: Osamu SAWAI
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Publication number: 20210154953Abstract: A mold for resin impregnation molding includes an accommodating portion which is able to accommodate a container body around which a fiber bundle is wound, a storage portion which is able to store an uncured resin having fluidity, a flow path which causes the resin to flow from the storage portion to the accommodating portion, and a pressure control unit which controls a pressure which causes the resin stored in the storage portion to flow through the flow path to the accommodating portion.Type: ApplicationFiled: August 11, 2020Publication date: May 27, 2021Inventor: Osamu SAWAI
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Publication number: 20210140588Abstract: A pressure vessel includes a vessel body, a covering part, and a cylindrical mouthpiece. The vessel body includes a cylindrical open end portion on at least one end side of the vessel body. The covering part is made of a fiber reinforced resin and covers an outer surface of the vessel body. The mouthpiece is configured such that a plurality of mouthpiece bodies each having a projection on an inner surface of the mouthpiece body is connected to each other in a circumferential direction of the open end portion. The mouthpiece is attached to an outer peripheral surface of the open end portion by the projections biting into the covering part covering the outer peripheral surface of the open end portion. The mouthpiece bodies of the mouthpiece are connected to each other by fitting together fitting portions formed at end portions of the mouthpiece bodies in the circumferential direction.Type: ApplicationFiled: July 30, 2020Publication date: May 13, 2021Inventors: Osamu SAWAI, Tomoki NAKASHIMA
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Publication number: 20210095818Abstract: A restraining structure for a structural body includes: a restrained portion that is a tubular body or a stacked body; a pair of holding portions provided at the restrained portion; a first CFRP belt wrapped around the restrained portion in an axial direction of the restrained portion so as to extend between the pair of holding portions and having carbon fibers of a 0° direction along the axial direction; and a second CFRP belt stacked adjacent to an outermost layer near an end of the first CFRP belt and having carbon fibers of 45° to 90° directions with respect to the axial direction. One of the holding portions is provided at an end of the restrained portion. The other of the holding portions is provided at the other end of the restrained portion.Type: ApplicationFiled: August 3, 2020Publication date: April 1, 2021Inventor: Osamu SAWAI
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Patent number: 10900609Abstract: A high-pressure container has a body part, and a cap inserted in the body part, and the body part has a cylindrical liner, and a reinforcement layer provided on an outer circumferential surface of the liner for reinforcing the liner. The cap has a contact portion that contacts with an inner circumferential surface of the liner, a through-hole that communicates the inside of the body part with the outside, and a projecting portion that is pressed outward in radial directions of the body part, and bites into the reinforcement layer, so as to inhibit the cap from moving in the axial direction.Type: GrantFiled: December 21, 2017Date of Patent: January 26, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Osamu Sawai
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Patent number: 10890256Abstract: A seal structure of a high-pressure tank including: the first member in which a tank chamber is formed inside; and the second member which is fitted into the opening hole of the first member and provided with an annular groove formed on an outer peripheral surface, the seal structure includes: a seal member, having an annular shape, configured to be disposed on the tank chamber side in the groove; and a first back-up member and a second back-up member configured to be disposed further to the side opposite to the tank chamber side than the seal member in the groove, to include inclined surface parts respectively opposite to each other. The inclined surface part of the first back-up member includes a crest folding corner part in which a first low angle inclined part and a first high angle inclined part are connected to each other.Type: GrantFiled: April 15, 2019Date of Patent: January 12, 2021Assignees: TOYODA GOSEI CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Osamu Sawai, Kosuke Kusaba
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Patent number: 10845004Abstract: An end of a shell forming a high-pressure container is opened to form an opening. A cap is disposed partially inside the opening to close the opening. A shell reinforcing layer having a first reinforcing layer that is made of a first fiber-reinforced resin having a fiber direction oriented in a circumferential direction, and a second reinforcing layer that is integrated with the first reinforcing layer and made of a second fiber-reinforced resin having a fiber direction oriented in an axial direction, is wrapped in layers around an outer circumferential surface of the shell. The second reinforcing layer is placed over a region of the first reinforcing layer.Type: GrantFiled: July 27, 2018Date of Patent: November 24, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Osamu Sawai, Yuki Kai, Keisuke Hori
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Patent number: 10836441Abstract: Plural canister bodies supported by rocker members are disposed below a floor panel. The canister bodies are housed in a case. Lower couplers are disposed above the canister bodies. The lower couplers abut a cover member of the case. Upper couplers are disposed between the cover member and the floor panel.Type: GrantFiled: August 3, 2018Date of Patent: November 17, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Osamu Sawai
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Patent number: 10717356Abstract: A high pressure canister unit includes: plural arrayed canister bodies, each canister body being formed in a circular cylinder shape, and including an opening at at least one end portion in its axial direction; a coupling member that is connected to the opening of each of the canister bodies and that couples the plural canister bodies together, and the coupling member including a flow path placing interiors of the canister bodies in communication with each other; a box-shaped case that is configured to house the plural canister bodies and the coupling member, the case including a through hole; and a leader tube that is provided to the coupling member, that leads out to an exterior of the case through the through hole of the case, and to which a valve capable of opening and closing the flow path is attached.Type: GrantFiled: July 27, 2018Date of Patent: July 21, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Chiaki Kataoka, Shinsuke Kinoshita, Osamu Sawai
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Publication number: 20200217457Abstract: A pressure container includes a liner filled with gas inside, a reinforcement layer that is formed in contact with the outer surface of the liner by using a fiber reinforced resin and covers the liner from the outside, and a cap attached to the liner. The cap is formed into an annular shape, and includes a plurality of cap bodies that have engagement portions projecting toward the reinforcement layer and are arranged with intervals in a circumferential direction, and bridge portions that connect, in the circumferential direction, the cap bodies adjacent in the circumferential direction. The cap is attached to the liner in a state in which the bridge portions are deformed and the engagement portions of the plurality of cap bodies are engaged with the reinforcement layer.Type: ApplicationFiled: January 2, 2020Publication date: July 9, 2020Applicant: Toyota Jidosha Kabushiki KaishaInventor: Osamu Sawai
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Patent number: 10704738Abstract: A high-pressure vessel includes: a body portion formed in a cylindrical shape, with at least one end portion of the body portion, in an axial direction thereof, being open; a cap, at least part of which is inserted inside at least one open end portion of the body portion to plug the at least one open end portion; a first reinforcement layer provided on an outer peripheral surface of the body portion and made of fiber-reinforced plastic, a fiber direction of which coincides with a circumferential direction of the body portion; and a second reinforcement layer integrated with the first reinforcement layer and made of fiber-reinforced plastic including fibers that bridge one end portion and another end portion, in the axial direction, of the body portion.Type: GrantFiled: February 22, 2018Date of Patent: July 7, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshihiro Iwano, Osamu Sawai, Motomu Iitsuka
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Publication number: 20200182404Abstract: Provided is a high-pressure vessel manufacturing method including: molding a liner having a pleated part; forming a fiber-reinforced part on an outer circumferential side of the liner; curving the liner and the fiber-reinforced part; and pressurizing and heating the liner and the fiber-reinforced part. In the molding the liner, the height of first pleats of the pleated part that are disposed on the inner side of the curve relative to an axis is set to be smaller than a height of second pleats of the pleated part that are disposed on the outer side of the curve relative to the axis.Type: ApplicationFiled: October 25, 2019Publication date: June 11, 2020Inventor: Osamu SAWAI
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Publication number: 20200180428Abstract: A high-pressure container unit includes: a box-shaped case mounted on a vehicle and configured to include a bottom portion, a ceiling portion, and a peripheral wall portion; a plurality of container main bodies arranged in an interior of the case and each having a cylindrical body portion; and a reinforcing member extending along an axial direction of the container main body, the reinforcing member being provided in at least one of a space surrounded by the container main bodies adjacent to each other and the bottom portion and, a space surrounded by the container main bodies adjacent to each other and the ceiling portion.Type: ApplicationFiled: November 26, 2019Publication date: June 11, 2020Inventors: Osamu SAWAI, Tomoki NAKASHIMA
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Publication number: 20200171761Abstract: A method of manufacturing a high-pressure tank includes: forming a vessel body including a body portion having a cylindrical shape, a domical portion having a hemispherical shape and provided at an end of the body portion, and a neck portion extending from the domical portion in an axial direction of the domical portion; winding fibers around an outer peripheral surface of the vessel body to form a plurality of fiber layers laminated in a radial direction of the vessel body; and placing, in a mold, the vessel body around which the fibers have been wound, and then injecting a resin onto the neck portion in an axial direction of the vessel body to impregnate the fibers with the resin.Type: ApplicationFiled: October 28, 2019Publication date: June 4, 2020Inventors: Osamu SAWAI, Soichiro MATSUI
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Publication number: 20200116305Abstract: A pressure vessel includes a liner and a reinforcing layer. The liner includes a body portion having a cylindrical shape. The liner is configured such that a gas is filled in the liner. The reinforcing layer is made of a material having a linear expansion coefficient lower than a linear expansion coefficient of a material of the liner. The reinforcing layer is formed in contact with an outer surface of the body portion. The reinforcing layer is configured to cover the liner from outside the liner. A thickness of the body portion is set to such a value that the outer surface of the body portion is not separated from the reinforcing layer when the gas that has been filled in the liner is discharged out of the liner.Type: ApplicationFiled: September 4, 2019Publication date: April 16, 2020Applicant: Toyota Jidosha Kabushiki KaishaInventor: Osamu Sawai
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Patent number: 10619563Abstract: An engine is stopped after a battery is charged by a first motor-generator driven by the engine when a condition in which freezing of condensed water in an exhaust pipe is expected to occur is satisfied after an ignition switch is turned OFF. By the engine operated during the charging of the battery, the condensed water accumulated in the exhaust pipe can be discharged to the outside of the exhaust pipe by the exhaust pressure of the exhaust gas. Accordingly, the condensed water is unlikely to remain in the exhaust pipe, and the freezing of the condensed water in the exhaust pipe can be suppressed even when parking continues for long under a low temperature atmosphere. The battery is charged by the first motor-generator, and thus the electric power of the battery can be used for traveling of a vehicle and fuel economy deterioration can be suppressed.Type: GrantFiled: December 7, 2017Date of Patent: April 14, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Osamu Sawai
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Patent number: 10612725Abstract: A high-pressure vessel includes: a body portion formed in an open cylindrical shape; a cap, at least a part of the cap being inserted inside an opening of at least one end portion of the body portion to thereby plug the end portion; a first reinforcement layer provided at an outer peripheral surface of the body portion and configured by fiber-reinforced plastic having a fiber direction that coincides with a circumferential direction of the body portion; and a second reinforcement layer configured by fiber-reinforced plastic including fibers that pass through a center portion of the cap, as seen in the axial direction of the body portion, and that are disposed parallel to the axial direction of the body portion, as seen in a direction orthogonal to the axial direction of the body portion.Type: GrantFiled: February 21, 2018Date of Patent: April 7, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshihiro Iwano, Osamu Sawai, Motomu Iitsuka
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Patent number: 10598312Abstract: A connection structure for pressure vessels is configured such that respective mouth pieces are connected to at least one ends of the pressure vessels, and when adjacent mouth pieces are connected to each other in an intersection direction intersecting with the axial direction, the pressure vessels placed in parallel can be connected to each other. The mouth piece includes a connecting portion along the intersection direction intersecting with the axial direction. The connecting portion includes an external screw thread portion formed on a first side thereof, and a nut rotatably locked to a second side thereof and having an internal screw thread portion threadedly engageable with the external screw thread portion.Type: GrantFiled: July 26, 2018Date of Patent: March 24, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Osamu Sawai, Yuki Kai
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Publication number: 20200049312Abstract: A pressure vessel includes: a vessel main body having a cylindrical straight body part, and domed parts respectively including hemispherical portions that have hemispherical shapes and are integrally formed at each end of the straight body part; a first reinforced section formed by winding reinforcing fibers around an outer circumferential surface of one domed part such that the reinforcing fibers are interlaced with each other; a second reinforced section formed by winding the reinforcing fibers helically around an outer circumferential surface of the straight body part, continuously from the first reinforced section; and a third reinforced section formed by winding the reinforcing fibers around an outer circumferential surface of the other domed part such that the reinforcing fibers are interlaced with each other, continuously from the second reinforced section.Type: ApplicationFiled: May 29, 2019Publication date: February 13, 2020Applicant: Toyota Jidosha Kabushiki KaishaInventor: Osamu Sawai