Patents Assigned to WPC Corporation
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Patent number: 9410566Abstract: A fixing device for a panel which can absorb a dimensional change due to expansion of the siding board is provided. A comb-shaped slit is formed at an area from the intermediate line C defined between opposed two sides of a rectangular metal plate to form leaf spring-shaped strip plates 41, 42 and 43. The strip plates are bent at the intermediate line C and a bend line F to form fixing pieces 41a, 42a and 43a and lock pieces 41b, 42b, and 43b so as to lock fixing ends 51a and 52b of the siding board 50. Moreover, an inclined angle ?1 of the fixing piece 41a disposed at the strip plate 41 is formed to have a different angle from an inclined angle ?2 of the fixing pieces 42a, 43a disposed at the remaining strip plates 42 and 43. Thereby the strip plates can be elastically deformed.Type: GrantFiled: June 28, 2012Date of Patent: August 9, 2016Assignee: WPC CORPORATIONInventors: Takeyasu Kikuchi, Masatomo Sato, Seiichi Fukawa
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Patent number: 8871345Abstract: Disclosed are composite pellets for extrusion molding wherein fusion does not occur between the pellets, and there is no variation in size and density. A molten material obtained by an extruder for a raw material containing a thermoplastic resin and wood powder is extruded into a strand shape through a die nozzle of the extruder, and cut into a predetermined length to form a pellet. At this time, the extrusion amount, the diameter of each nozzle hole, and the number of nozzle holes are adjusted so that the linear velocity (?d) of the molten material in each nozzle hole of the die nozzle is in the range of 12 to 50 cm/sec. Further, regardless of the variations in particle diameter, etc., a stable amount of the composite pellets are supplied to the extruder, and smoothly introduced to a screw of the extruder. The composite pellets and 12-hydroxystearic acid containing a metal of Ca, Mg, or Zn are agitated together, and 0.03 to 0.Type: GrantFiled: April 27, 2011Date of Patent: October 28, 2014Assignee: WPC CorporationInventors: Takeyasu Kikuchi, Kazumasa Morita, Koji Higashi, Yuichiro Nakamura
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Publication number: 20140199117Abstract: To provide a fixing device for a panel which can absorb a dimensional change due to expansion of the siding board. A comb-shaped slit is formed at an area from the intermediate line C defined between opposed two sides of a rectangular metal plate to form leaf spring-shaped strip plates 41, 42 and 43. The strip plates are bent at the intermediate line C and a bend line F to form fixing pieces 41a, 42a and 43a and lock pieces 41b, 42b, and 43b so as to lock fixing ends 51a and 52b of the siding board 50. Moreover, an inclined angle ?1 of the fixing piece 41a disposed at the strip plate 41 is formed to have a different angle from an inclined angle ?2 of the fixing pieces 42a, 43a disposed at the remaining strip plates 42 and 43. Thereby the strip plates can be elastically deformed.Type: ApplicationFiled: June 28, 2012Publication date: July 17, 2014Applicant: WPC CORPORATIONInventors: Takeyasu Kikuchi, Masatomo Sato, Seiichi Fukawa
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Patent number: 8769897Abstract: The present invention relates to a decorative remaining formwork formed by combining a plurality of single frame plates defined by 3 or more edges comprising one edge arranged horizontally and at least one inclined edge inclined with respect to the horizontal edge; arranging the single frame plates so as to form a predetermined gap in a joint-shape between respective edges of the single frame plates adjacent each other; and having a back plate on a concrete casting surface, the back plate covering the predetermined gap in a longitudinal direction, and being fixed to the single frame plate to connect the single frame plates adjacent each other, and a cross-sectional shape in a width direction of the back plate being formed into a shape enlarged from a contact surface with respect to the single frame plate toward an opposed surface with respect to the contact surface.Type: GrantFiled: March 10, 2011Date of Patent: July 8, 2014Assignees: WPC Corporation, Kengo Kuma and AssociatesInventors: Takeyasu Kikuchi, Seiichi Fukawa, Kengo Kuma
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Publication number: 20140000200Abstract: The present invention relates to a decorative remaining formwork formed by combining a plurality of single frame plates defined by 3 or more edges comprising one edge arranged horizontally and at least one inclined edge inclined with respect to the horizontal edge; arranging the single frame plates so as to form a predetermined gap in a joint-shape between respective edges of the single frame plates adjacent each other; and having a back plate on a concrete casting surface, the back plate covering the predetermined gap in a longitudinal direction, and being fixed to the single frame plate to connect the single frame plates adjacent each other, and a cross-sectional shape in a width direction of the back plate being formed into a shape enlarged from a contact surface with respect to the single frame plate toward an opposed surface with respect to the contact surface.Type: ApplicationFiled: March 10, 2011Publication date: January 2, 2014Applicants: KENGO KUMA AND ASSOCIATES, WPC CORPORATIONInventors: Takeyasu Kikuchi, Seiichi Fukawa, Kengo Kuma
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Publication number: 20130065053Abstract: Disclosed are composite pellets for extrusion molding wherein fusion does not occur between the pellets, and there is no variation in size and density. A molten material obtained by an extruder for a raw material containing a thermoplastic resin and wood powder is extruded into a strand shape through a die nozzle of the extruder, and cut into a predetermined length to form a pellet. At this time, the extrusion amount, the diameter of each nozzle hole, and the number of nozzle holes are adjusted so that the linear velocity (?d) of the molten material in each nozzle hole of the die nozzle is in the range of 12 to 50 cm/sec. Further, regardless of the variations in particle diameter, etc., a stable amount of the composite pellets are supplied to the extruder, and smoothly introduced to a screw of the extruder. The composite pellets and 12-hydroxystearic acid containing a metal of Ca, Mg, or Zn are agitated together, and 0.03 to 0.Type: ApplicationFiled: April 27, 2011Publication date: March 14, 2013Applicant: WPC CORPORATIONInventors: Takeyasu Kikuchi, Kazumasa Morita, Koji Higashi, Yuichiro Nakamura
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Patent number: D664836Type: GrantFiled: August 11, 2010Date of Patent: August 7, 2012Assignee: WPC CorporationInventor: Takeyasu Kikuchi