Patents by Inventor Toshihide Iida
Toshihide Iida 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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Publication number: 20200047452Abstract: Provided is a coating base material having a new configuration capable of enhancing the durability of a coating regardless of the adhesion strength of a primer. A coating base material 1 whose surface is subjected to application of a coating includes: a mesh-like valley portion 2 formed on the surface; and a plurality of island portions 3 formed on the surface and surrounded by the valley portion 2. Each island portion 3 has a crater-like recess 4 formed on an upper surface thereof.Type: ApplicationFiled: January 22, 2018Publication date: February 13, 2020Applicant: NIPPON PILLAR PACKING CO., LTD.Inventors: Toshihide IIDA, Noboru TAMAKI, Masateru YAMADA
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Publication number: 20190331272Abstract: A resin tube fitting prevents backwaters between its body and inner ring. The fitting includes a body, an inner ring, and a union nut. The body has main, outer, and inner sleeves, and a groove. The inner ring has a cylinder, an insert, and outer and inner protrusions. The union nut has a body and a pressing member. The inner sleeve has a through hole serving as a channel. The inner protrusion extends from the cylinder to an axial direction to contact the inner sleeve. The inner protrusion has a through hole serving as another channel connected with the inner sleeve's channel. The tip of the inner protrusion has an inner diameter not less than the minimum inner diameter of the inner sleeve. An inner peripheral surface is located at the inner periphery of the inner protrusion and causes it to reduce in inner diameter toward another axial direction.Type: ApplicationFiled: January 15, 2018Publication date: October 31, 2019Applicant: NIPPON PILLAR PACKING CO., LTD.Inventors: Makoto FUJII, Toshihide IIDA, Tomoyuki KOIKE, Motoaki NARUO
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Patent number: 10436364Abstract: A structure of a resin-made pipe joint includes a joint body having a cylindrical shape, a sleeve having a cylindrical press-inserting portion which is press-insertable into the joint body and a cylindrical coupling portion which is press-insertable into a tube, and a fastening member for fixing the tube which is in a state where the coupling portion is press-inserted, to the joint body through the sleeve. The sleeve contains a sealing surface in an outer circumferential surface of the press-inserting portion, the sealing surface being closely contactable with an inner circumferential surface of the joint body, and comprises a non-contacting surface between the press-inserting portion and the coupling portion, the non-contacting surface forming a space with respect to the inner circumferential surface of the joint body, when the sealing surface is closely contacted with the inner circumferential surface of the joint body.Type: GrantFiled: January 20, 2016Date of Patent: October 8, 2019Assignee: Nippon Pillar Packing Co., Ltd.Inventors: Makoto Fujii, Masaki Miyamoto, Tatsuya Fujii, Toshihide Iida, Tomoyuki Koike, Shintaro Makihata
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Publication number: 20190257458Abstract: A resin tube fitting has a body with a sleeve allowing the longitudinal end of the tube to be put therein, an inner ring with a press-in portion configured to be pressed in the longitudinal end of the tube, and a union nut with a connector configured to be screwed to an outer periphery of the body to allow the longitudinal end of the tube to be put radially between the connector and the press-in portion. The inner ring and the union nut are made of resin, which has a property of contracting in response to change in ambient temperature. The radial contraction rate of the connector is higher by 0.05% or more than that of the press-in portion of the inner ring.Type: ApplicationFiled: June 15, 2017Publication date: August 22, 2019Applicant: NIPPON PILLAR PACKING CO., LTD.Inventors: Makoto FUJII, Masaki MIYAMOTO, Tatsuya FUJII, Toshihide IIDA, Tomoyuki KOIKE, Shintaro MAKIHATA
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Publication number: 20190203858Abstract: A resin tube fitting has: a body with an outer sleeve; an inner ring including an insert portion insertable into the outer sleeve to contact the outer sleeve radially, and a press-in portion configured to be pressed into a longitudinal end of the tube; and a union nut configured to be engageable with the body. The body and the inner ring are made of resin, which has a property of contracting in response to change in ambient temperature. A radial contraction rate of the outer sleeve of the body is designed to be higher by 0.09% or more than that of the insert portion of the inner ring.Type: ApplicationFiled: June 15, 2017Publication date: July 4, 2019Applicant: NIPPON PILLAR PACKING CO., LTD.Inventors: Makoto FUJII, Masaki MIYAMOTO, Tatsuya FUJll, Toshihide IIDA, Tomoyuki KOIKE, Shintaro MAKIHATA
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Publication number: 20190193315Abstract: A method for manufacturing a resin pipe joint with a joint body includes the following steps. Preparing a mold and a supply device configured to supply molten resin. The mold includes a first mold for an outer shape of the joint body and a second mold for an inner shape of the joint body. Combining the second mold with the first mold to form a cavity, into which the molten resin is injectable, inside the mold. Supplying the molten resin to the cavity in the mold. Solidifying the molten resin in the cavity after stop of the supply of the molten resin from the supply device. The second mold has a gap that connects the cavity to a discharge space outside the cavity and allows gas to flow.Type: ApplicationFiled: June 15, 2017Publication date: June 27, 2019Applicant: NIPPON PILLAR PACKING CO., LTD.Inventors: Masaki MIYAMOTO, Masateru YAMADA, Kazukiyo TESHIMA, Hiroki SAKAMOTO, Toshihide IIDA, Tomoyuki KOIKE, Motoaki NARUO
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Patent number: 10240699Abstract: A resin-made pipe joint with enhanced sealing property between a joint body and sleeve. A sealing portion which seals between an inner circumferential surface of an inserting portion of a sleeve and an outer circumferential surface of an inner cylinder portion is formed by press-inserting an inserting portion into a groove portion of the joint body. When the inserting portion is press-inserted into the groove portion, a space is formed between a body cylinder portion located opposite to an opening portion of the groove portion in the axial direction, and the projection end of the inserting portion. After completing press insertion of the inserting portion into the groove portion, in a section including axis of the inner cylinder portion, a region in the outer circumferential surface of the inner cylinder portion facing the space forms an angle of 5° to 15° to the axis of the inner cylinder portion.Type: GrantFiled: September 17, 2015Date of Patent: March 26, 2019Assignee: Nippon Pillar Packing Co., Ltd.Inventors: Makoto Fujii, Masaki Miyamoto, Toshihide Iida, Tomoyuki Koike, Atsushi Nakano, Daisuke Urata
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Patent number: 10190708Abstract: A resin-made pipe joint enhancing sealing property between a joint body and a sleeve. The joint body and the sleeve are produced by using a fluorine resin. A sealing portion which seals between the inner circumferential surface of an inserting portion of the sleeve and the outer circumferential surface of the inner cylinder portion is formed by press-inserting the inserting portion into a groove portion of the joint body. When, with respect to the inserting and groove portions, an insertion rate of the inserting portion to the groove portion is indicated by X, and a multiplying factor of the radial width of the inserting portion to the radial width of the groove portion is indicated by Y, the resin-made pipe joint has the insertion rate and multiplying factor which are within a range defined by following Expressions (1) and (2): Y=?0.218X+1.218??(1) and Y=?0.67X+1.67.Type: GrantFiled: September 17, 2015Date of Patent: January 29, 2019Assignee: Nippon Pillar Packing Co., Ltd.Inventors: Makoto Fujii, Masaki Miyamoto, Toshihide Iida, Tomoyuki Koike, Atsushi Nakano, Daisuke Urata
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Publication number: 20190024836Abstract: A pipe joint, made of synthetic resin, including: an inner ring; a joint body having an annular sealing groove and a male screw portion formed on an outer circumference; a union nut having a female screw portion formed on an inner circumference to be tightened onto the male screw portion of the joint body, such that a first opposing surface is formed in the joint body to be perpendicular to an axial direction, and a second opposing surface is formed in the union nut to oppose the first opposing surface. An engagement projection is provided in one of the first opposing surface and the second opposing surface. An engagement recess is provided in the other of the first opposing surface and the second opposing surface such that the engagement projection engages with the engagement recess when the union nut has been tightened up to an appropriate position.Type: ApplicationFiled: September 25, 2018Publication date: January 24, 2019Applicant: Nippon Pillar Packing Co., Ltd.Inventors: Makoto Fujii, Toshihide Iida
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Patent number: 10145497Abstract: A pipe-connecting device including a resin-made tube and an inner ring. The inner ring has a flared portion and a tip-contracted outer-circumferential flared surface. The tip-contracted outer-circumferential flared surface is press-inserted into an end portion of the tube to cause the end portion of the tube to be flared and deformed. A section shape of the outer-circumferential flared surface in a direction extending along an axis of the inner ring body is formed into a convex curved surface passing through a first place, which is a maximum-diameter portion of the flared portion, a second place, which is the tip end side of the flared portion of the inner ring body, and a third place, which is between the first place and the second place, and in which a diameter is equal to an outer diameter of the tube with respect to the axis.Type: GrantFiled: March 24, 2014Date of Patent: December 4, 2018Assignee: NIPPON PILLAR PACKING CO., LTD.Inventors: Makoto Fujii, Toshihide Iida
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Patent number: 10139028Abstract: A pipe joint made of synthetic resin comprises a first opposing surface formed in a joint body perpendicular to the axial direction, and a second opposing surface formed in a union nut that opposes the first opposing surface. An engagement projection is provided in the second opposing surface that projects toward the first opposing surface. An engagement recess is provided in the first opposing surface such that the engagement projection engages with the engagement recess when the union nut has been tightened up to an appropriate position.Type: GrantFiled: September 26, 2014Date of Patent: November 27, 2018Assignee: Nippon Pillar Packing Co., Ltd.Inventors: Makoto Fujii, Toshihide Iida
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Patent number: 10132431Abstract: A pipe-connecting device includes: an inner ring having: an outer circumferential portion having a tip-contracted outer-circumferential flared surface that is to be press-inserted into an end portion of a tube to flare the tube, and an inner circumferential portion constituting a fluid transfer path; a pipe joint body that has a tubular screwing portion having an external thread; and a union nut having an internal thread that is screwed with the external thread. The inner ring including the tube is inserted into the tubular screwing portion, and the tip-contracted outer-circumferential flared surface is pressed through the tube by a pressing portion of the union nut. The pressing portion of the union nut is formed into an inclined inner circumferential surface that is inclined in the same direction as the tip-contracted outer-circumferential flared surface with respect to the axis of the tubular screwing portion.Type: GrantFiled: March 24, 2014Date of Patent: November 20, 2018Assignee: NIPPON PILLAR PACKING CO., LTD.Inventors: Makoto Fujii, Toshihide Iida
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Publication number: 20170307118Abstract: A structure of a resin-made pipe joint includes a sleeve which is press-insertable from one axial side into one longitudinal end portion of a flexible tube to flare the one longitudinal end portion to hold the flared state, a joint body which is couplable to the sleeve, and a union nut which is fastenable to the joint body to hold a state where the sleeve press-inserted into the one longitudinal end portion is coupled to the joint body. The sleeve has a taper-like first outer circumferential surface, a second outer circumferential surface having an outer diameter that is smaller than a maximum outer diameter of the first outer circumferential surface, and an annular step portion which is an annular step portion that is disposed between the first outer circumferential surface and the second outer circumferential surface and comprises an edge portion on a side of the first outer circumferential surface.Type: ApplicationFiled: January 20, 2016Publication date: October 26, 2017Applicant: Nippon Pillar Packing Co., Ltd.Inventors: Makoto FUJII, Kazukiyo TESHIMA, Tatsuya FUJII, Toshihide IIDA, Tomoyuki KOIKE, Shintaro MAKIHATA
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Publication number: 20170299097Abstract: A structure of a resin-made pipe joint includes a joint body having a cylindrical shape, a sleeve having a cylindrical press-inserting portion which is press-insertable into the joint body and a cylindrical coupling portion which is press-insertable into a tube, and a fastening member for fixing the tube which is in a state where the coupling portion is press-inserted, to the joint body through the sleeve. The sleeve contains a sealing surface in an outer circumferential surface of the press-inserting portion, the sealing surface being closely contactable with an inner circumferential surface of the joint body, and comprises a non-contacting surface between the press-inserting portion and the coupling portion, the non-contacting surface forming a space with respect to the inner circumferential surface of the joint body, when the sealing surface is closely contacted with the inner circumferential surface of the joint body.Type: ApplicationFiled: January 20, 2016Publication date: October 19, 2017Applicant: Nippon Pillar Packing Co., Ltd.Inventors: Makoto FUJII, Masaki MIYAMOTO, Tatsuya FUJII, Toshihide IIDA, Tomoyuki KOIKE, Shintaro MAKIHATA
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Patent number: 9791084Abstract: A pipe joint made of synthetic resin includes: a joint body including a male screw portion on an outer circumferential portion; and a union nut including a female screw portion formed on an inner circumferential portion such that the female screw portion is tightened onto the male screw portion of the joint body. An outer circumferential surface of the joint body has a projection portion that is integrated therewith and projects radially outward. An inner circumferential surface of the union nut has a convex or concave engagement portion that is integrated therewith and engages with the projection portion when the union nut is tightened up to an appropriate position.Type: GrantFiled: April 23, 2014Date of Patent: October 17, 2017Assignee: Nippon Pillar Packing Co., Ltd.Inventors: Makoto Fujii, Toshihide Iida
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Publication number: 20170159854Abstract: A resin-made pipe joint enhancing sealing property between a joint body and a sleeve. The joint body and the sleeve are produced by using a fluorine resin. A sealing portion which seals between the inner circumferential surface of an inserting portion of the sleeve and the outer circumferential surface of the inner cylinder portion is formed by press-inserting the inserting portion into a groove portion of the joint body. When, with respect to the inserting and groove portions, an insertion rate of the inserting portion to the groove portion is indicated by X, and a multiplying factor of the radial width of the inserting portion to the radial width of the groove portion is indicated by Y, the resin-made pipe joint has the insertion rate and multiplying factor which are within a range defined by following Expressions (1) and (2): Y=?0.218X+1.218??(1) and Y=?0.67X+1.67.Type: ApplicationFiled: September 17, 2015Publication date: June 8, 2017Applicant: Nippon Pillar Packing Co., Ltd.Inventors: Makoto FUJII, Masaki MIYAMOTO, Toshihide IIDA, Tomoyuki KOIKE, Atsushi NAKANO, Daisuke URATA
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Publication number: 20170146161Abstract: A resin-made pipe joint with enhanced sealing property between a joint body and sleeve. A sealing portion which seals between an inner circumferential surface of an inserting portion of a sleeve and an outer circumferential surface of an inner cylinder portion is formed by press-inserting an inserting portion into a groove portion of the joint body. When the inserting portion is press-inserted into the groove portion, a space is formed between a body cylinder portion located opposite to an opening portion of the groove portion in the axial direction, and the projection end of the inserting portion. After completing press insertion of the inserting portion into the groove portion, in a section including axis of the inner cylinder portion, a region in the outer circumferential surface of the inner cylinder portion facing the space forms an angle of 5° to 15° to the axis of the inner cylinder portion.Type: ApplicationFiled: September 17, 2015Publication date: May 25, 2017Applicant: Nippon Pillar Packing Co., Ltd.Inventors: Makoto FUJII, Masaki MIYAMOTO, Toshihide IIDA, Tomoyuki KOIKE, Atsushi NAKANO, Daisuke URATA
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Publication number: 20160215912Abstract: A pipe joint made of synthetic resin comprises a first opposing surface formed in a joint body perpendicular to the axial direction, and a second opposing surface formed in a union nut that opposes the first opposing surface. An engagement projection is provided in the second opposing surface that projects toward the first opposing surface. An engagement recess is provided in the first opposing surface such that the engagement projection engages with the engagement recess when the union nut has been tightened up to an appropriate position.Type: ApplicationFiled: September 26, 2014Publication date: July 28, 2016Applicant: NIPPON PILLAR PACKING CO., LTD.Inventors: Makoto Fujii, Toshihide Iida
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Publication number: 20160116096Abstract: A pipe joint made of synthetic resin includes: a joint body including a male screw portion on an outer circumferential portion; and a union nut including a female screw portion formed on an inner circumferential portion such that the female screw portion is tightened onto the male screw portion of the joint body. An outer circumferential surface of the joint body has a projection portion that is integrated therewith and projects radially outward. An inner circumferential surface of the union nut has a convex or concave engagement portion that is integrated therewith and engages with the projection portion when the union nut is tightened up to an appropriate position.Type: ApplicationFiled: April 23, 2014Publication date: April 28, 2016Applicant: Nippon Pillar Packing Co., Ltd.Inventors: Makoto Fujii, Toshihide Iida
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Publication number: 20160076686Abstract: In a pipe-connecting device having a pipe joint body, a union nut, and an inner ring that is to be press-inserted into an end of a tube, a seal element portion is formed in a basal end portion of the inner ring, and a seal forming portion of the pipe joint body is formed. The pipe-connecting device has a configuration where, in an assembled state, the seal element portion and the seal forming portion are pressed against each other, and a diameter-contracted tube portion, which is in a tube end portion, and which is fitted onto a base-contracted diameter-contracted outer circumferential surface, and a tubular screwing portion are pressed against each other by a contact pressure that is lower than a contact pressure between the seal element portion and the seal forming portion, or separated from each other.Type: ApplicationFiled: March 24, 2014Publication date: March 17, 2016Inventors: Makoto Fujii, Toshihide Iida