Patents by Inventor Yasuyuki Ogiwara
Yasuyuki Ogiwara 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: 11939723Abstract: A papermaking felt includes at least one base fabric composed of a MD yam material in the felt running direction (MD) and a CD yarn material in the felt crossing direction (CD) and having MD end regions and CD end regions, at least one of the MD end regions and the CD end regions are overlapped with each other, the entire overlapped portion is welded without removing a part or all of the MD yarn material or the CD yarn material in the overlapped portion, and when the average thickness of the welded portion of each base fabric is x (mm) and the average thickness of the material portion of each base fabric is y (mm), the relationship between x and y of the at least one base fabric satisfies the following formula (1): 0.5?x/y?0.95.Type: GrantFiled: September 23, 2020Date of Patent: March 26, 2024Assignee: Ichikawa Co., Ltd.Inventors: Yasuyuki Ogiwara, Yuto Muraoka
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Patent number: 11834789Abstract: A papermaking felt with two or more plain weave base fabrics that can be bonded to each other. The joint portions do not open when a batt fiber layer is attached or when the felt is used. The papermaking felt can be made from an MD yarn material in the felt running direction (MD direction) and a CD yarn material in the felt cross-direction (CD direction), including a combination with two or more base fabrics directly overlapped with each other, which have a joint portion wherein the MD direction end portions are joined which include a first MD direction end portion and a second MD direction end portion wherein, with regard to the base fabrics having all included joint portions. The equations (1) and (2) below are satisfied when the maximum distance in the MD direction between the joint portions of the base fabrics is x (cm) and the minimum distance thereof is y (cm): x?750 (1); and 51?y (2).Type: GrantFiled: August 23, 2021Date of Patent: December 5, 2023Assignee: Ichikawa Co., Ltd.Inventors: Yasuyuki Ogiwara, Yuto Muraoka
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Publication number: 20220064857Abstract: The object of the present invention is to provide a papermaking felt having good productivity and a laminated structure using 2 or more plain weave base fabrics that can be bonded to each other, wherein the joint portions do not open when a batt fiber layer is attached or when the felt is used, and to provide a method for producing the same.Type: ApplicationFiled: August 23, 2021Publication date: March 3, 2022Applicant: Ichikawa Co., Ltd.Inventors: Yasuyuki OGIWARA, Yuto MURAOKA
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Publication number: 20210095423Abstract: [Problem to be solved] To provide a papermaking felt excellent in smoothness of a joined portion (no welded portion mark or base fabric mark is generated), and an efficient manufacturing method thereof. [Solving means] A papermaking felt wherein, in at least one base fabric composed of a MD yarn material in the felt running direction (MD direction) and a CD yarn material in the felt crossing direction (CD direction) and having MD-direction end regions and CD-direction end regions, at least one of the MD-direction end regions and the CD-direction end regions are overlapped with each other, wherein said overlapped portion is welded without removing a part or all of the MD yarn material or the CD yarn material in said overlapped portion, and wherein, when the average thickness of the welded portion of each base fabric is x (mm) and the average thickness of each base fabric before welding is y (mm), the relationship between x and y of the at least one base fabric satisfies the following formula (1): 0.5?x/y?0.Type: ApplicationFiled: September 23, 2020Publication date: April 1, 2021Applicant: Ichikawa Co., Ltd.Inventors: Yasuyuki OGIWARA, Yuto MURAOKA
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Patent number: 10526751Abstract: The object is to provide a base fabric for a papermaking felt wherein there is no damage to the MD yarns of the seam loops and a method of producing the same. This is achieved by a base fabric for a papermaking felt wherein seam loops are formed by MD yarns, which is made from MD yarns of the felt running direction (MD) and CD yarns of the felt cross-direction (CD); wherein the seam loops are obtained by removing CD yarns from a part other than the CD yarn no-removal part of a woven fabric comprising a seam loop region having the CD yarn no-removal part, and by moving CD yarns of the CD yarn no-removal part and CD yarns from between the CD yarn no-removal part and the part in which the CD yarns have been removed in the direction of the part in which the CD yarns have been removed, and wherein the strength of the MD yarns of the part in which the CD yarns have been removed is lower than the strength of the MD yarns of the CD yarn no-removal part.Type: GrantFiled: January 17, 2017Date of Patent: January 7, 2020Assignee: Ichikawa Co., Ltd.Inventor: Yasuyuki Ogiwara
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Patent number: 10240293Abstract: There is provided a papermaking felt comprising at least one base fabric and at least one batt layer integrated with the base fabric. The base fabric comprises a first base fabric, a second base fabric, and a third base fabric, the first base fabric, the second base fabric, and the third base fabric are laminated together in an arbitrary order, the first base fabric is a base fabric formed by spirally winding, in a right-handed manner, a band-shaped body having a width smaller than a width of the papermaking felt, the second base fabric is a base fabric formed by spirally winding, in a left-handed manner, a band-shaped body having a width smaller than the width of the papermaking felt, and the third base fabric is a base fabric having at least a plurality of ground warp yarns parallel to an machine direction of the papermaking felt.Type: GrantFiled: April 20, 2017Date of Patent: March 26, 2019Assignee: Ichikawa Co., Ltd.Inventor: Yasuyuki Ogiwara
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Patent number: 10011950Abstract: There is provided a papermaking felt comprising a base fabric layer and at least one batt layer integrated with the base fabric layer, wherein the base fabric comprises at least one layer formed by spirally winding a band-shaped body having a width smaller than a width of the papermaking felt and having a plurality of ground warp yarns, a plurality of ground weft yarns, a first side edge, and a second side edge in such a manner that the first side edge and the second side edge are adjacent and thereby joining the side edges together; and a plurality of marks is arranged at regular intervals in a warp direction of the band-shaped body.Type: GrantFiled: July 11, 2016Date of Patent: July 3, 2018Assignee: Ichikawa Co., Ltd.Inventor: Yasuyuki Ogiwara
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Patent number: 9982390Abstract: There is provided a papermaking felt including: a base fabric layer including at least two layers of a first base fabric layer and a second base fabric layer, each of which is formed by spirally winding a band-shaped body. The first base fabric layer and the second base fabric layer are laminated together such that a direction of spiral winding of the first base fabric layer and a direction of spiral winding of the second base fabric layer are different; A magnitude of a displacement with respect to a cross-machine direction between two intersection points formed by a straight line that passes through intersection points of the side edges of the respective band-shaped bodies of the first base fabric layer and the second base fabric layer and has a minimum angle to the cross-machine direction and both ends of the papermaking felt is 2 cm or more.Type: GrantFiled: July 11, 2016Date of Patent: May 29, 2018Assignee: Ichikawa Co., Ltd.Inventors: Yasuyuki Ogiwara, Hirofumi Murakami
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Publication number: 20170306560Abstract: There is provided a papermaking felt comprising at least one base fabric and at least one batt layer integrated with the base fabric, The base fabric comprises a first base fabric, a second base fabric, and a third base fabric, the first base fabric, the second base fabric, and the third base fabric are laminated together in an arbitrary order, the first base fabric is a base fabric formed by spirally winding, in a right-handed manner, a band-shaped body having a width smaller than a width of the papermaking felt, the second base fabric is a base fabric formed by spirally winding, in a left-handed manner, a band-shaped body having a width smaller than the width of the papermaking felt, and the third base fabric is a base fabric having at least a plurality of ground warp yarns parallel to an machine direction of the papermaking felt.Type: ApplicationFiled: April 20, 2017Publication date: October 26, 2017Applicant: Ichikawa Co., LtdInventor: Yasuyuki OGIWARA
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Publication number: 20170204564Abstract: The object is to provide a base fabric for a papermaking felt wherein there is no damage to the MD yarns of the seam loops and a method of producing the same. This is achieved by a base fabric for a papermaking felt wherein seam loops are formed by MD yarns, which is made from MD yarns of the felt running direction (MD) and CD yarns of the felt cross-direction (CD); wherein the seam loops are obtained by removing CD yarns from a part other than the CD yarn no-removal part of a woven fabric comprising a seam loop region having the CD yarn no-removal part, and by moving CD yarns of the CD yarn no-removal part and CD yarns from between the CD yarn no-removal part and the part in which the CD yarns have been removed in the direction of the part in which the CD yarns have been removed, and wherein the strength of the MD yarns of the part in which the CD yarns have been removed is lower than the strength of the MD yarns of the CD yarn no-removal part.Type: ApplicationFiled: January 17, 2017Publication date: July 20, 2017Applicant: Ichikawa Co., Ltd.Inventor: Yasuyuki OGIWARA
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Publication number: 20170030019Abstract: There is provided a papermaking felt including: a base fabric layer including at least two layers of a first base fabric layer and a second base fabric layer, each of which is formed by spirally winding a band-shaped body. The first base fabric layer and the second base fabric layer are laminated together such that a direction of spiral winding of the first base fabric layer and a direction of spiral winding of the second base fabric layer are different; A magnitude of a displacement with respect to a cross-machine direction between two intersection points formed by a straight line that passes through intersection points of the side edges of the respective band-shaped bodies of the first base fabric layer and the second base fabric layer and has a minimum angle to the cross-machine direction and both ends of the papermaking felt is 2 cm or more.Type: ApplicationFiled: July 11, 2016Publication date: February 2, 2017Applicant: Ichikawa Co., LtdInventors: Yasuyuki OGIWARA, Hirofumi Murakami
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Publication number: 20170022666Abstract: There is provided a papermaking felt comprising a base fabric layer and at least one batt layer integrated with the base fabric layer, wherein the base fabric comprises at least one layer formed by spirally winding a band-shaped body having a width smaller than a width of the papermaking felt and having a plurality of ground warp yarns, a plurality of ground weft yarns, a first side edge, and a second side edge in such a manner that the first side edge and the second side edge are adjacent and thereby joining the side edges together; and a plurality of marks is arranged at regular intervals in a warp direction of the band-shaped body.Type: ApplicationFiled: July 11, 2016Publication date: January 26, 2017Applicant: Ichikawa Co., Ltd.Inventor: Yasuyuki OGIWARA
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Patent number: 9260819Abstract: A felt that further equalizes a pressure state under pressurization by a press so as to smooth the surface of a wet paper web without causing marking on the surface thereof and allow water to be uniformly squeezed out from the wet paper web without crushing the wet paper web is provided by a papermaking press felt wherein a difference between a maximum value and a minimum value of an interval between an upper knuckle portion and an upper knuckle portion, an interval between upper and lower knuckle portions, or an interval between a lower knuckle portion and a lower knuckle portion is arranged to be a value corresponding to 1.0 piece or less of an upper warp yarn in a base fabric.Type: GrantFiled: January 24, 2014Date of Patent: February 16, 2016Assignee: Ichikawa Co., Ltd.Inventors: Takashi Oouchi, Shigeyuki Okamoto, Yasuhiko Kobayashi, Yasuyuki Ogiwara, Masashi Kato
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Patent number: 8815055Abstract: Press felts for papermaking include a batt fiber layer and a base fabric. The batt fiber layer is integrated into the base fabric. The base fabric includes a ground warp yarn, a ground weft yarn, and an additional warp yarn. The ground warp yarn and the ground weft yarn include monofilament yarns, and the additional warp yarn includes a material different from a material forming the ground warp yarn. The additional warp yarn is arranged so that, when the base fabric is viewed in cross-section in a warp yarn direction, the additional warp yarn ascends toward a wet paper web-side surface of the base fabric and descends toward a roll-side surface of the base fabric, relative to the at least one ground warp yarn.Type: GrantFiled: April 23, 2013Date of Patent: August 26, 2014Assignee: Ichikawa Co., Ltd.Inventor: Yasuyuki Ogiwara
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Publication number: 20140202649Abstract: A felt that further equalizes a pressure state under pressurization by a press so as to smooth the surface of a wet paper web without causing marking on the surface thereof and allow water to be uniformly squeezed out from the wet paper web without crushing the wet paper web is provided by a papermaking press felt wherein a difference between a maximum value and a minimum value of an interval between an upper knuckle portion and an upper knuckle portion, an interval between upper and lower knuckle portions, or an interval between a lower knuckle portion and a lower knuckle portion is arranged to be a value corresponding to 1.0 piece or less of an upper warp yarn in a base fabric.Type: ApplicationFiled: January 24, 2014Publication date: July 24, 2014Applicant: Ichikawa Co., Ltd.Inventors: Takashi OOUCHI, Shigeyuki Okamoto, Yasuhiko Kobayashi, Yasuyuki Ogiwara, Masashi Kato
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Patent number: 8540849Abstract: Press felts for papermaking include a batt fiber layer and a base fabric. The batt fiber layer is integrated into the base fabric. The base fabric includes a ground warp yarn, a ground weft yarn, and an additional warp yarn. The ground warp yarn and the ground weft yarn include monofilament yarns, and the additional warp yarn includes a material different from a material forming the ground warp yarn. The additional warp yarn is arranged so that, when the base fabric is viewed in cross-section in a warp yarn direction, the additional warp yarn ascends toward a wet paper web-side surface of the base fabric and descends toward a roll-side surface of the base fabric, relative to the at least one ground warp yarn.Type: GrantFiled: December 8, 2011Date of Patent: September 24, 2013Assignee: Ichikawa Co., Ltd.Inventor: Yasuyuki Ogiwara
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Publication number: 20130233503Abstract: Press felts for papermaking include a batt fiber layer and a base fabric. The batt fiber layer is integrated into the base fabric. The base fabric includes a ground warp yarn, a ground weft yarn, and an additional warp yarn. The ground warp yarn and the ground weft yarn include monofilament yarns, and the additional warp yarn includes a material different from a material forming the ground warp yarn. The additional warp yarn is arranged so that, when the base fabric is viewed in cross-section in a warp yarn direction, the additional warp yarn ascends toward a wet paper web-side surface of the base fabric and descends toward a roll-side surface of the base fabric, relative to the at least one ground warp yarn.Type: ApplicationFiled: April 23, 2013Publication date: September 12, 2013Applicant: ICHIKAWA CO., LTD.Inventor: Yasuyuki OGIWARA
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Patent number: 8257556Abstract: The present invention provides a papermaking felt which exhibits a good dewatering capability (water permeability) and resistance to flattening in a papermaking machine, and which is capable of improving surface smoothness of a wet paper web and has improved anti-dehairing property. A papermaking felt using a woven fabric in which at least one of an MD yarn and a CMD yarn arranged on a wet paper web side of a base body is a multifilament yarn which is a bundle of a plurality of filaments with fineness of 100 dtex or less and which is substantially without twisting or only loosely twisted and hence almost without twisting.Type: GrantFiled: August 12, 2008Date of Patent: September 4, 2012Assignee: Ichikawa Co., Ltd.Inventor: Yasuyuki Ogiwara
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Publication number: 20120145349Abstract: Press felts for papermaking include a batt fiber layer and a base fabric. The batt fiber layer is integrated into the base fabric. The base fabric includes a ground warp yarn, a ground weft yarn, and an additional warp yarn. The ground warp yarn and the ground weft yarn include monofilament yarns, and the additional warp yarn includes a material different from a material forming the ground warp yarn. The additional warp yarn is arranged so that, when the base fabric is viewed in cross-section in a warp yarn direction, the additional warp yarn ascends toward a wet paper web-side surface of the base fabric and descends toward a roll-side surface of the base fabric, relative to the at least one ground warp yarn.Type: ApplicationFiled: December 8, 2011Publication date: June 14, 2012Applicant: ICHIKAWA CO., LTD.Inventor: Yasuyuki OGIWARA
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Publication number: 20110100576Abstract: A single-seam felt which employs a base fabric of a multilayer structure and which, despite this, is excellent in wet-web surface smoothness and has satisfactory batt adhesion. It is free from wrap protrusion and weft fraying in the seamed part of the layered base fabric.Type: ApplicationFiled: August 8, 2008Publication date: May 5, 2011Applicant: ICHIKAWA CO., LTD.Inventor: Yasuyuki Ogiwara