Patents by Inventor Yoshiyuki Fukuhara
Yoshiyuki Fukuhara 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: 11819091Abstract: A method for manufacturing a molded surface fastener may include using, as a synthetic resin forming the molded surface fastener, a thermoplastic resin having a melt flow rate of 20 g/10 min or more and 60 g/10 min or less and a flexural modulus of 1000 MPa or more and 2300 MPa or less. Consequently, an engaging element in which a top end surface of an engaging head portion is flat, and at least a part of a back-side proximal end surface of the engaging head portion has an angle of 70° or more and 110° or less with respect to a height direction of the stem portion can be stably molded, and thus the molded surface fastener that has a high peel strength and a good texture can be obtained.Type: GrantFiled: November 16, 2018Date of Patent: November 21, 2023Assignee: YKK CorporationInventors: Yoshiyuki Fukuhara, Hiroyuki Yamashita, Takahiro Fuse, Kyoichi Yuki, Ryosuke Tanimoto
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Patent number: 11633021Abstract: Provided is a molding apparatus used for manufacturing a molded surface fastener wherein a die wheel driving rotationally has a concentric double cylinder structure provided with an outer side cylindrical body that has provided therethrough a plurality of penetrating holes, and an inner side cylindrical body that has formed, in the outer peripheral surface thereof, a plurality of grooved portions, the grooved portions located in the inner side cylindrical body include a use grooved portion that intersects with the penetrating hole of the outer side cylindrical body and a non-use grooved portion that is covered by the inner peripheral surface of the outer side cylindrical body. By using this molding apparatus obtained is a molded surface fastener in which a plurality of types of engaging elements having different shapes in a plan view are arranged cyclically in a reference direction.Type: GrantFiled: January 27, 2021Date of Patent: April 25, 2023Assignee: YKK CorporationInventors: Makoto Takekawa, Yoshiyuki Fukuhara, Hiroyuki Yamashita, Isamu Michihata, Yui Hashimoto
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Patent number: 11559114Abstract: Provided is a molded surface fastener capable of stably having high engaging strength with respect to a loop member. The molded surface fastener of the present invention includes a base portion and a plurality of engaging elements provided with a stem portion and an engaging portion, and is formed of synthetic resin containing lubricant at 0.15 wt % or more and 1.00 wt % or less. A top end surface of the engaging element is formed to be flat, and the engaging portion has a hanging portion which hangs down obliquely downward toward the base portion.Type: GrantFiled: March 24, 2020Date of Patent: January 24, 2023Assignee: YKK CorporationInventors: Makoto Takekawa, Yoshiyuki Fukuhara, Hiroyuki Yamashita, Kyoichi Yuki
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Patent number: 11533971Abstract: In a molded surface fastener in which an engaging element includes at least two engaging pawl portions protruded outward, a plurality of the engaging elements is disposed in a line along a machine direction to form an element row, a plurality of the element rows is arranged side by side in a cross direction, each of the engaging elements has, as the engaging pawl portions, at least a pair of symmetrical engaging pawl portions which are disposed each other at symmetrical positions in the cross direction and are respectively protruded in the cross direction sides, and a plurality of the engaging elements is arranged in a staggered pattern. Thereby, the molded surface fastener can appropriately and stably exert desired performance such as peel strength with respect to more types of non-woven fabrics.Type: GrantFiled: July 9, 2018Date of Patent: December 27, 2022Assignee: YKK CorporationInventors: Hiroyuki Yamashita, Yoshiyuki Fukuhara, Ryosuke Tanimoto, Makoto Takekawa, Shoichi Yokoyama
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Patent number: 11363857Abstract: In this molded surface fastener, an engaging element includes a columnar stem portion, and micro pawl portions protruding outward from an upper end outer peripheral edge of the stem portion in a plan view of the engaging elements. A pawl width dimension of the micro pawl portions is smaller than a line segment connecting two points on the upper end outer peripheral edge of the stem portion. The micro pawl portions protrude toward a base portion. This molded surface fastener has a high peel strength and a shear strength with respect to a female surface fastener.Type: GrantFiled: March 3, 2020Date of Patent: June 21, 2022Assignee: YKK CorporationInventors: Yoshiyuki Fukuhara, Hiroyuki Yamashita, Makoto Takekawa, Takahiro Fuse
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Patent number: 11291275Abstract: In this molded surface fastener, an engaging element includes a columnar stem portion, and micro pawl portions protruding outward from an upper end outer peripheral edge of the stem portion in a plan view of the engaging elements. A pawl width dimension of the micro pawl portions is smaller than a line segment connecting two points on the upper end outer peripheral edge of the stem portion. The micro pawl portions protrude toward a base portion. This molded surface fastener has a high peel strength and a shear strength with respect to a female surface fastener.Type: GrantFiled: December 20, 2016Date of Patent: April 5, 2022Assignee: YKK CorporationInventors: Yoshiyuki Fukuhara, Hiroyuki Yamashita, Makoto Takekawa, Takahiro Fuse
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Patent number: 11284681Abstract: Provided is a molding apparatus used for manufacturing a molded surface fastener wherein a die wheel driving rotationally has a concentric double cylinder structure provided with an outer side cylindrical body that has provided therethrough a plurality of penetrating holes, and an inner side cylindrical body that has formed, in the outer peripheral surface thereof, a plurality of grooved portions, the grooved portions located in the inner side cylindrical body include a use grooved portion that intersects with the penetrating hole of the outer side cylindrical body and a non-use grooved portion that is covered by the inner peripheral surface of the outer side cylindrical body. By using this molding apparatus obtained is a molded surface fastener in which a plurality of types of engaging elements having different shapes in a plan view are arranged cyclically in a reference direction.Type: GrantFiled: April 3, 2017Date of Patent: March 29, 2022Assignee: YKK CorporationInventors: Makoto Takekawa, Yoshiyuki Fukuhara, Hiroyuki Yamashita, Isamu Michihata, Yui Hashimoto
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Patent number: 11259605Abstract: In this molded surface fastener, plural engaging elements having a stem portion and an engaging head portion formed integrally on the stem portion are standing on the base portion, at least one pawl portion having a pawl width dimension narrower than a width dimension at a boundary between the stem portion and the engaging head portion is protruded on an outer peripheral edge part of the engaging head portion, and a back surface of pawl of the pawl portion is formed at different angles with respect to a back surface of head portion of the engaging head portion. Such a molded surface fastener of the present invention has a substantial engaging force with respect to a female surface fastener and can make a texture of its surface comfortable.Type: GrantFiled: March 3, 2020Date of Patent: March 1, 2022Assignee: YKK CorporationInventors: Yoshiyuki Fukuhara, Hiroyuki Yamashita, Takahiro Fuse, Isamu Michihata, Yui Hashimoto
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Publication number: 20220039521Abstract: A method for manufacturing a molded surface fastener may include using, as a synthetic resin forming the molded surface fastener, a thermoplastic resin having a melt flow rate of 20 g/10 min or more and 60 g/10 min or less and a flexural modulus of 1000 MPa or more and 2300 MPa or less. Consequently, an engaging element in which a top end surface of an engaging head portion is flat, and at least a part of a back-side proximal end surface of the engaging head portion has an angle of 70° or more and 110° or less with respect to a height direction of the stem portion can be stably molded, and thus the molded surface fastener that has a high peel strength and a good texture can be obtained.Type: ApplicationFiled: November 16, 2018Publication date: February 10, 2022Inventors: Yoshiyuki Fukuhara, Hiroyuki Yamashita, Takahiro Fuse, Kyoichi Yuki, Ryosuke Tanimoto
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Patent number: 11219285Abstract: This manufacturing method of a molded surface fastener involves a primary molding step for forming a primary molded body and a secondary molding step for compressing a provisional element of the primary molded body while heating the same. A molding apparatus is provided with a mold member comprising multiple penetration holes and multiple concave portions, whereof each penetration hole communicates to at least one concave portion; in the primary molding step, the molding apparatus is used to form a primary molded body comprising a provisional element having a primary stem portion and a pawl portion is formed from the protruded portion by compressing the provisional element. By this means, it is possible to stably manufacture a molded surface fastener that has an engaging element comprising a pawl portion that projects from the outer peripheral edge of an engaging head portion.Type: GrantFiled: August 2, 2016Date of Patent: January 11, 2022Assignee: YKK CorporationInventors: Yoshiyuki Fukuhara, Yuji Takada
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Publication number: 20210393001Abstract: This manufacturing method of a molded surface fastener involves a primary molding step for forming a primary molded body and a secondary molding step for compressing a provisional element of the primary molded body while heating the same. A molding apparatus is provided with a mold member comprising multiple penetration holes and multiple concave portions, whereof each penetration hole communicates to at least one concave portion; in the primary molding step, the molding apparatus is used to form a primary molded body comprising a provisional element having a primary stem portion and a pawl portion is formed from the protruded portion by compressing the provisional element. By this means, it is possible to stably manufacture a molded surface fastener that has an engaging element comprising a pawl portion that projects from the outer peripheral edge of an engaging head portion.Type: ApplicationFiled: September 2, 2021Publication date: December 23, 2021Inventors: Yoshiyuki Fukuhara, Yuji Takada
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Publication number: 20210267320Abstract: In a molded surface fastener in which an engaging element includes at least two engaging pawl portions protruded outward, a plurality of the engaging elements is disposed in a line along a machine direction to form an element row, a plurality of the element rows is arranged side by side in a cross direction, each of the engaging elements has, as the engaging pawl portions, at least a pair of symmetrical engaging pawl portions which are disposed each other at symmetrical positions in the cross direction and are respectively protruded in the cross direction sides, and a plurality of the engaging elements is arranged in a staggered pattern. Thereby, the molded surface fastener can appropriately and stably exert desired performance such as peel strength with respect to more types of non-woven fabrics.Type: ApplicationFiled: July 9, 2018Publication date: September 2, 2021Applicant: YKK CorporationInventors: Hiroyuki Yamashita, Yoshiyuki Fukuhara, Ryosuke Tanimoto, Makoto Takekawa, Shoichi Yokoyama
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Patent number: 11089845Abstract: In this molded surface fastener, plural engaging elements having a stem portion and an engaging head portion formed integrally on the stem portion are standing on the base portion, at least one pawl portion having a pawl width dimension narrower than a width dimension at a boundary between the stem portion and the engaging head portion is protruded on an outer peripheral edge part of the engaging head portion, and a back surface of pawl of the pawl portion is formed at different angles with respect to a back surface of head portion of the engaging head portion. Such a molded surface fastener of the present invention has a substantial engaging force with respect to a female surface fastener and can make a texture of its surface comfortable.Type: GrantFiled: December 24, 2015Date of Patent: August 17, 2021Assignee: YKK CorporationInventors: Yoshiyuki Fukuhara, Hiroyuki Yamashita, Takahiro Fuse, Isamu Michihata, Yui Hashimoto
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Publication number: 20210145133Abstract: Provided is a molding apparatus used for manufacturing a molded surface fastener wherein a die wheel driving rotationally has a concentric double cylinder structure provided with an outer side cylindrical body that has provided therethrough a plurality of penetrating holes, and an inner side cylindrical body that has formed, in the outer peripheral surface thereof, a plurality of grooved portions, the grooved portions located in the inner side cylindrical body include a use grooved portion that intersects with the penetrating hole of the outer side cylindrical body and a non-use grooved portion that is covered by the inner peripheral surface of the outer side cylindrical body. By using this molding apparatus obtained is a molded surface fastener in which a plurality of types of engaging elements having different shapes in a plan view are arranged cyclically in a reference direction.Type: ApplicationFiled: January 27, 2021Publication date: May 20, 2021Inventors: Makoto Takekawa, Yoshiyuki Fukuhara, Hiroyuki Yamashita, Isamu Michihata, Yui Hashimoto
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Publication number: 20210106101Abstract: In this molded surface fastener, plural engaging elements having a stem portion and an engaging head portion formed integrally on the stem portion are standing on the base portion, at least one pawl portion having a pawl width dimension narrower than a width dimension at a boundary between the stem portion and the engaging head portion is protruded on an outer peripheral edge part of the engaging head portion, and a back surface of pawl of the pawl portion is formed at different angles with respect to a back surface of head portion of the engaging head portion. Such a molded surface fastener of the present invention has a substantial engaging force with respect to a female surface fastener and can make a texture of its surface comfortable.Type: ApplicationFiled: December 21, 2020Publication date: April 15, 2021Inventors: Yoshiyuki Fukuhara, Hiroyuki Yamashita, Takahiro Fuse, Isamu Michihata, Yui Hashimoto
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Publication number: 20200305558Abstract: Provided is a molded surface fastener capable of stably having high engaging strength with respect to a loop member. The molded surface fastener of the present invention includes a base portion and a plurality of engaging elements provided with a stem portion and an engaging portion, and is formed of synthetic resin containing lubricant at 0.15 wt % or more and 1.00 wt % or less. A top end surface of the engaging element is formed to be flat, and the engaging portion has a hanging portion which hangs down obliquely downward toward the base portion.Type: ApplicationFiled: March 24, 2020Publication date: October 1, 2020Inventors: Makoto Takekawa, Yoshiyuki Fukuhara, Hiroyuki Yamashita, Kyoichi Yuki
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Publication number: 20200196716Abstract: In this molded surface fastener, an engaging element includes a columnar stem portion, and micro pawl portions protruding outward from an upper end outer peripheral edge of the stem portion in a plan view of the engaging elements. A pawl width dimension of the micro pawl portions is smaller than a line segment connecting two points on the upper end outer peripheral edge of the stem portion. The micro pawl portions protrude toward a base portion. This molded surface fastener has a high peel strength and a shear strength with respect to a female surface fastener.Type: ApplicationFiled: March 3, 2020Publication date: June 25, 2020Inventors: Yoshiyuki Fukuhara, Hiroyuki Yamashita, Makoto Takekawa, Takahiro Fuse
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Publication number: 20200196715Abstract: In this molded surface fastener, plural engaging elements having a stem portion and an engaging head portion formed integrally on the stem portion are standing on the base portion, at least one pawl portion having a pawl width dimension narrower than a width dimension at a boundary between the stem portion and the engaging head portion is protruded on an outer peripheral edge part of the engaging head portion, and a back surface of pawl of the pawl portion is formed at different angles with respect to a back surface of head portion of the engaging head portion. Such a molded surface fastener of the present invention has a substantial engaging force with respect to a female surface fastener and can make a texture of its surface comfortable.Type: ApplicationFiled: March 3, 2020Publication date: June 25, 2020Inventors: Yoshiyuki Fukuhara, Hiroyuki Yamashita, Takahiro Fuse, Isamu Michihata, Yui Hashimoto
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Publication number: 20200107617Abstract: Provided is a molding apparatus used for manufacturing a molded surface fastener wherein a die wheel driving rotationally has a concentric double cylinder structure provided with an outer side cylindrical body that has provided therethrough a plurality of penetrating holes, and an inner side cylindrical body that has formed, in the outer peripheral surface thereof, a plurality of grooved portions, the grooved portions located in the inner side cylindrical body include a use grooved portion that intersects with the penetrating hole of the outer side cylindrical body and a non-use grooved portion that is covered by the inner peripheral surface of the outer side cylindrical body. By using this molding apparatus obtained is a molded surface fastener in which a plurality of types of engaging elements having different shapes in a plan view are arranged cyclically in a reference direction.Type: ApplicationFiled: April 3, 2017Publication date: April 9, 2020Inventors: Makoto Takekawa, Yoshiyuki Fukuhara, Hiroyuki Yamashita, Isamu Michihata, Yui Hashimoto
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Publication number: 20190008239Abstract: In this molded surface fastener, plural engaging elements having a stem portion and an engaging head portion formed integrally on the stem portion are standing on the base portion, at least one pawl portion having a pawl width dimension narrower than a width dimension at a boundary between the stem portion and the engaging head portion is protruded on an outer peripheral edge part of the engaging head portion, and a back surface of pawl of the pawl portion is formed at different angles with respect to a back surface of head portion of the engaging head portion. Such a molded surface fastener of the present invention has a substantial engaging force with respect to a female surface fastener and can make a texture of its surface comfortable.Type: ApplicationFiled: December 24, 2015Publication date: January 10, 2019Inventors: Yoshiyuki Fukuhara, Hiroyuki Yamashita, Takahiro Fuse, Isamu Michihata, Yui Hashimoto