Patents Assigned to Mitsuboshi Belting
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Patent number: 6358609Abstract: Processed fiber for bonding to a rubber composition. The processed fiber consists of unprocessed fiber treated with a) a first processing liquid having at least one of an isocyanate compound and an epoxy compound, b) a second processing liquid having RFL that includes at least one rubber latex selected from acrylonitrile-butadiene rubber latex and hydrogenated nitrile rubber latex, and c) a third processing liquid having rubber paste including acrylonitrile-butadiene rubber composition dissolved in a solvent and an isocyanate compound. The weight ratio of the isocyanate compound to the acrylonitrile-butadiene rubber composition is from 1/1 to 1/3. The third processing liquid has a solid content of from 3-7%.Type: GrantFiled: July 14, 1998Date of Patent: March 19, 2002Assignee: Mitsuboshi Belting Ltd.Inventors: Takashi Kinoshita, Hitoshi Hasaka
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Patent number: 6294600Abstract: A power transmission belt comprising: a body comprising rubber comprising an ethylene-&agr;-olefin elastomer and N,N′-m-phenylene dimaleimide added in an amount of 0.2-10 parts by weight per 100 parts by weight of ethylene-&agr;-olefin elastomer.Type: GrantFiled: February 1, 2000Date of Patent: September 25, 2001Assignee: Mitsuboshi Belting, Ltd.Inventors: Toshimichi Takada, Kazutoshi Ishida, Isao Yoshida
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Patent number: 6286793Abstract: In a pop-up structure of the invention, an elevatable member is rotatably disposed on upper portions of a pair of front and rear poles, which is also rotatably provided on a base member. Shielding plates extend between the front and rear poles on both sides thereof. In case the elevatable member is elevated by rotating both poles, even if an elevating height of the elevatable member is high, at least a part of the space formed between the front and rear poles is covered by the shielding plates at the both sides. Therefore, the appearance at the popped-up state of the pop-up structure is improved, and there is no risk of catching foreign materials by the poles or the like when it is collapsed.Type: GrantFiled: December 20, 1999Date of Patent: September 11, 2001Assignees: Nifco Inc., Nissan Motor Co., Ltd., Mitsuboshi Belting Ltd.Inventors: Tsugio Hirose, Toshihiro Hara, Mutsuhisa Masaki, Tohru Sambonmatsu
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Patent number: 6245420Abstract: A transfer belt for use on an electrostatographic duplicator. The belt has a body defining an image transfer surface. The body is made up of a rubber composition including a combination of epichlorohydrin-ethyleneoxide copolymer and hydrogenated nitrile rubber, to which a metallic salt of an unsaturated carboxylic acid and an organic peroxide are added.Type: GrantFiled: December 21, 1999Date of Patent: June 12, 2001Assignee: Mitsuboshi Belting Ltd.Inventors: Hiroyuki Nishio, Kazutoshi Ishida, Toshimichi Takada, Yorifumi Hineno, Arata Hasegawa
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Patent number: 6240993Abstract: A method of making a power transmission belt/belt sleeve, which method includes the step of providing a first mold assembly having a central axis and a circumference, providing a sheet material having first and second oppositely facing surfaces, placing the sheet material around the first mold assembly and causing a contoured portion of the first surface to be keyed to the first mold assembly so that the sheet material is in a predetermined circumferential position relative to the first mold assembly, providing a second mold assembly having a contoured surface, placing the contoured surface of the second mold assembly against the second surface of the sheet material, providing a guide element, operatively connecting the guide element between the first and second mold assemblies so that the guide element maintains the second mold assembly in a predetermined circumferential position relative to the first mold assembly, and forming the second surface of the sheet material through the contoured surface of the secType: GrantFiled: January 18, 1999Date of Patent: June 5, 2001Assignee: Mitsuboshi Belting Ltd.Inventors: Yoshiaki Onaka, Takehiko Ito, Toshihiro Ueda, Yuji Yamamoto
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Patent number: 6231987Abstract: A composition for transparent coloration of a glass surface. The composition has fine gold (Au) particles; fine silver (Ag) particles; a fixing agent including an organic Ti compound, an organic Fe compound, and an organic Si compound; a binder resin; and an organic solvent. The relationship between the amount of gold and silver particles to the fixing agent as a ratio of the number of metal atoms is as follows: (Au+Ag)/(Ti+Fe+Si)<½.Type: GrantFiled: October 14, 1998Date of Patent: May 15, 2001Assignee: Mitsuboshi Belting Ltd.Inventors: Yoshifumi Maeda, Kazuo Goto
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Patent number: 6220932Abstract: A method of producing a double-sided belt structure from an endless body having a length, a first surface, a second surface, at least one load carrying cord embedded in the body with a lengthwise center and extending along the length of the body between the first and second surfaces of the body, and a thickness between the first and second surfaces of the body.Type: GrantFiled: May 28, 1999Date of Patent: April 24, 2001Assignee: Mitsuboshi Belting Ltd.Inventor: Kyoichi Mishima
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Patent number: 6220983Abstract: A toothed belt having a body with a length, an inside surface, an outside surface, laterally spaced sides, and a plurality of teeth spaced in a lengthwise direction on the inside of the body. An elongate, load carrying cord extends lengthwise of the body and is embedded in the body. A cloth layer is provided on the inside surface of the body. The load carrying cord has a diameter that is greater than 1.1 mm and not greater than 1.5 mm and is prepared by a) bundling glass fiber filaments each having a diameter of from 5 to 10 &mgr;m into strands, b) gathering and primary twisting a plurality of stands in one twist direction to form strings, and c) gathering and final twisting the strings in a direction oppositely to the one twist direction.Type: GrantFiled: April 16, 1999Date of Patent: April 24, 2001Assignee: Mitsuboshi Belting Ltd.Inventors: Nobutaka Osako, Akihiro Ueno, Yasunori Nakai
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Patent number: 6217414Abstract: An apparatus for repositioning and forming a power transmission belt. The apparatus has first and second hangers for supporting a plurality of power transmission belts and movable selectively between active and inactive positions. Each of the first and second hangers has a storage portion and a standby portion. At least one shifting mechanism is operable to move a power transmission belt from the storage portion to the standby portion on each of the first and second hangers. A first belt running unit has a first pulley around which a power transmission belt can be placed. The first belt running unit is movable selectively between a processing position and an attaching/detaching position. A second belt running unit has a second pulley around which a power transmission belt can be placed. The second belt running unit is movable selectively between a processing position and an attaching/detaching position.Type: GrantFiled: May 26, 1999Date of Patent: April 17, 2001Assignee: Mitsuboshi Belting Ltd.Inventors: Hiromi Michirura, Shinji Kotani
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Patent number: 6177202Abstract: A power transmission belt having a body with a length and defined by a cushion rubber layer having at least one load carrying cord embedded therein and extending lengthwise with respect to the body, and a compression section made at least partially from rubber. The cushion rubber layer has a rubber composition including an ethylene-&agr;-olefin elastomer capable of being cross-linked with sulfur. The rubber in the compression section is a rubber composition made from an ethylene-&agr;-olefin elastomer capable of being cross-linked with an organic peroxide.Type: GrantFiled: October 27, 1998Date of Patent: January 23, 2001Assignee: Mitsuboshi Belting Ltd.Inventors: Tsuyoshi Takehara, Toshimichi Takada
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Patent number: 6176799Abstract: A power transmission belt having a body with a length, an inside, an outside, laterally spaced sides, and at least one rib. The body has a compression section, a tension section, and a load carrying element between the inside and outside of the body and extending in a lengthwise direction. The load carrying element is made from twisted polyester fiber filaments having an ethylene-2,6-naphthalate component and a denier of 4,000-8,000. The belt requires a stress of at least 500 N per rib to effect elongation of the belt by 3%. The belt has a dry heat shrinkage stress between 100 N and 200 N after an initial load of 147 N is applied to the belt and the belt is allowed to reside in an atmosphere at a temperature of 100° C. for 30 minutes.Type: GrantFiled: March 31, 1997Date of Patent: January 23, 2001Assignee: Mitsuboshi Belting Ltd.Inventors: Takashi Kinoshita, Hitoshi Hasaka, Toshimi Kumazaki
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Patent number: 6171710Abstract: A layer is provided for bonding a conductive plating to a substrate which substrate normally does not provide firm bonding of plating directly thereto. The bonding layer forms a matrix in which are dispersed ultrafine metal particles. The bonding layer is formed in situ on the substrate surface with the metal particles being maintained unaggregated in the matrix as it is formed on the surface. Plating subsequently formed on the outer surface of the bonding layer is effectively firmly bonded to the substrate through the intermediary of the matrix and metal particles distributed therein. The bonding layer includes a fixative formed of an organic compound including a metal and an organic solvent. The bonding layer may further include a film strengthener.Type: GrantFiled: April 26, 1996Date of Patent: January 9, 2001Assignee: Mitsuboshi Belting Ltd.Inventors: Masayuki Ogino, Shigehiko Hayashi, Masahito Kawahara, Kazuo Goto, Toru Noguchi, Yoshio Yamaguchi
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Patent number: 6132328Abstract: A load carrying cord for a power transmission belt. The load carrying cord has a plurality of strands made up of fiber filaments of ethylene-2,6-naphthalate. Each strand has a denier of 500 to 1500. The fiber filaments in each strand are first-twisted in a first direction. The plurality of strands are combined by final-twisting in a second direction oppositely to the first direction. The resulting load carrying cord has a denier of 3,000 to 10,000.Type: GrantFiled: November 24, 1998Date of Patent: October 17, 2000Assignee: Mitsuboshi Belting Ltd.Inventors: Takashi Kinoshita, Hitoshi Hasaka
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Patent number: 6131435Abstract: A method for estimating remaining life of a power transmission belt. The method includes a step of providing a power transmission belt having a) a body having a rubber material with a length and laterally spaced surfaces to engage a cooperating pulley and b) a plurality of fibers embedded in the rubber material and projecting in a lateral direction so that a plurality of the fibers have a portion that is exposed at one of the laterally spaced surfaces. The method further includes the step of magnifying the one laterally spaced surface to identify cracks in the rubber at the fiber portion. Based on at least one of the nature and quantity of cracks in the rubber material, the remaining life of the power transmission belt is estimated.Type: GrantFiled: June 11, 1997Date of Patent: October 17, 2000Assignee: Mitsuboshi Belting Ltd.Inventors: Kyoichi Mishima, Koji Kitahama
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Patent number: 6102823Abstract: A power transmission belt having a center belt with a length, an inside surface, and an outside surface. Upper and lower blocks are provided and each has a leading face, a trailing face, and laterally oppositely facing pulley-engaging side surfaces. The upper and lower blocks are connected to each other to maintain the upper block, lower block and center belt together in an operative relationship without penetrating the center belt. At least one of the pulley-engaging side surfaces on at least one of the upper and lower blocks is uninterrupted between the leading and trailing faces on the one of the upper and lower blocks so that the at least one side surface can engage a cooperating pulley surface along an uninterrupted line between the leading and trailing faces of the at least one side surface.Type: GrantFiled: October 7, 1992Date of Patent: August 15, 2000Assignee: Mitsuboshi Belting Ltd.Inventors: Yasutoshi Hosokawa, Akiyoshi Homan, Kiyokazu Wada, Koji Matsuo, Isao Koyama, Shinichi Takagi, Mitsuo Ishikawa
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Patent number: 6099897Abstract: A method of producing metal particles, including the steps of forming a membrane of a polymer or oligomer which has, at the terminals of its molecule and/or in the side chains thereof, at least one functional group selected from cyano, amino and thiol groups, and depositing a metal on the membrane through vapor deposition so that the membrane has particles of the metal and/or its oxide dispersed therein.Type: GrantFiled: January 27, 1998Date of Patent: August 8, 2000Assignee: Mitsuboshi Belting Ltd.Inventors: Koichi Sayo, Shigehiko Hayashi, Kazuo Goto, Shigehito Deki
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Patent number: 6086809Abstract: A method of forming a belt/belt sleeve having a length and teeth spaced lengthwise of the belt/belt sleeve. The method includes the steps of providing a cylindrical cloth having a sewn joint; providing a mold having an axis, a circumference, and a plurality of axially extending grooves spaced around the circumference of the mold; extending the cylindrical cloth around the mold; providing a rod; pressing the rod against the cloth at the sewn joint so as to urge the sewn joint into one of the axially extending grooves; separating the rod from the cloth; and forming at least one belt component around the cloth on the mold after the rod is separated from the cloth.Type: GrantFiled: July 23, 1998Date of Patent: July 11, 2000Assignee: Mitsuboshi Belting Ltd.Inventors: Shigeo Goto, Yoshiki Matsuura
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Patent number: 6080072Abstract: A belt handling system has a belt storage subassembly, a testing pulley subassembly, and a belt transfer subassembly. The testing pulley subassembly has first and second spaced, rotatable pulleys around which a belt to be treated can be trained. The belt transfer subassembly is operable to transfer a belt at the belt storage subassembly into an operative position trained around the first and second pulleys. The testing pulley subassembly has a belt removal unit which is repositionable between first and second positions. A belt trained around the first and second pulleys is movable from an engaged state with the first pulley wherein a belt trained around the first and second pulleys follows rotational movement of the first pulley and a disengaged state wherein the first pulley can be rotated without causing a belt trained around the first and second pulleys to follow rotational movement of the first pulley.Type: GrantFiled: March 20, 1998Date of Patent: June 27, 2000Assignee: Mitsuboshi Belting Ltd.Inventors: Hiromi Michikura, Shinji Kotani
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Patent number: 6068939Abstract: A method for producing a colored and fired film formed on a substrate having an improved chemical resistance includes the steps of applying a coloring composition onto a substrate so as to form a film, coating the surface of the film with a coating agent, and firing the film and the coating agent. The coloring composition comprises ultra-fine particles of at least one precious metal selected from the group consisting of Au, Pt, Pd, Rh and Ag, a fixing agent comprising an organic metal compound, a binder resin, a glass network forming component formed of an organic compound containing at least one element selected from the group consisting of Si, B and P, and an organic solvent.Type: GrantFiled: November 19, 1997Date of Patent: May 30, 2000Assignees: Mitsuboshi Belting Ltd., Nippon Sheet Glass Co., Ltd.Inventors: Yoshifumi Maeda, Shigehiko Hayashi, Kazuo Goto, Jun Kawaguchi, Yasunori Shiraishi
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Patent number: 5984816Abstract: A drive system having a belt with a length and a plurality of teeth spaced regularly along the length of the belt and a first pulley having a plurality of grooves for receiving the belt teeth with the belt and first pulley in operative relationship. The single pitch difference between the belt teeth and the grooves in the first pulley is between -0.04 mm and 0 mm.Type: GrantFiled: June 27, 1997Date of Patent: November 16, 1999Assignee: Mitsuboshi Belting Ltd.Inventors: Hiroyuki Nishio, Kuniharu Uto, Takahide Mizuno, Yoshihisa Fujita, Akira Kawaguchi, Hideaki Tanaka