Patents by Inventor Makoto Takekawa
Makoto Takekawa 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: 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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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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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: 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: 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: 20180368534Abstract: 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: December 20, 2016Publication date: December 27, 2018Applicant: YKK CorporationInventors: Yoshiyuki Fukuhara, Hiroyuki Yamashita, Makoto Takekawa, Takahiro Fuse