Patents by Inventor Kazuhiro Nagashima
Kazuhiro Nagashima 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: 9494207Abstract: A friction damper includes: a base body; a support secured to an elongated member of the base body and having a through hole; a rod which extends in such a manner as to pass through the through hole of the support and is movable in an axial direction with respect to the support; a friction member which has a hollow cylindrical portion interposed between the support and a main body portion of the rod in the through hole of the support, and which is fixed immovably with respect to the relative movement of the rod in the axial direction with respect to the base body; and a tightening means provided for the support so as to tighten the hollow cylindrical portion of the friction member onto the main body portion of the rod.Type: GrantFiled: June 19, 2013Date of Patent: November 15, 2016Assignee: Oiles CorporationInventors: Akihiko Okimura, Kazuhiro Nagashima, Go Tanaka, Yoshikazu Arai
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Patent number: 9488240Abstract: A friction damper includes a base body; a support secured to an elongated member of the base body and having a through hole; a rod which extends in such a manner as to pass through the through hole of the support and is movable in an axial direction with respect to the support; a friction member which has a hollow cylindrical portion interposed between the support and a main body portion of the rod in the through hole of the support, and which is fixed immovably with respect to the relative movement of the rod in the axial direction with respect to the base body; and a tightening structure provided for the support so as to tighten the hollow cylindrical portion of the friction member onto the main body portion of the rod.Type: GrantFiled: August 8, 2007Date of Patent: November 8, 2016Assignee: Oiles CorporationInventors: Akihiko Okimura, Kazuhiro Nagashima, Go Tanaka, Yoshikazu Arai
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Publication number: 20130327607Abstract: A friction damper includes: a base body; a support secured to an elongated member of the base body and having a through hole; a rod which extends in such a manner as to pass through the through hole of the support and is movable in an axial direction with respect to the support; a friction member which has a hollow cylindrical portion interposed between the support and a main body portion of the rod in the through hole of the support, and which is fixed immovably with respect to the relative movement of the rod in the axial direction with respect to the base body; and a tightening means provided for the support so as to tighten the hollow cylindrical portion of the friction member onto the main body portion of the rod.Type: ApplicationFiled: June 19, 2013Publication date: December 12, 2013Applicant: OILES CORPORATIONInventors: Akihiko OKIMURA, Kazuhiro NAGASHIMA, Go TANAKA, Yoshikazu Arai
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Patent number: 8584821Abstract: A friction damper includes: a base body; a support secured to an elongated member of the base body and having a through hole; a rod which extends in such a manner as to pass through the through hole of the support and is movable in an axial direction with respect to the support; a friction member which has a hollow cylindrical portion interposed between the support and a main body portion of the rod in the through hole of the support, and which is fixed immovably with respect to the relative movement of the rod in the axial direction with respect to the base body; and a tightening device provided for the support so as to tighten the hollow cylindrical portion of the friction member onto the main body portion of the rod.Type: GrantFiled: September 26, 2011Date of Patent: November 19, 2013Assignee: Oiles CorporationInventors: Akihiko Okimura, Kazuhiro Nagashima, Go Tanaka, Youko Arai
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Publication number: 20120073921Abstract: A friction damper includes: a base body; a support secured to an elongated member of the base body and having a through hole; a rod which extends in such a manner as to pass through the through hole of the support and is movable in an axial direction with respect to the support; a friction member which has a hollow cylindrical portion interposed between the support and a main body portion of the rod in the through hole of the support, and which is fixed immovably with respect to the relative movement of the rod in the axial direction with respect to the base body; and a tightening device provided for the support so as to tighten the hollow cylindrical portion of the friction member onto the main body portion of the rod.Type: ApplicationFiled: September 26, 2011Publication date: March 29, 2012Applicant: OILES CORPORATIONInventors: Akihiko OKIMURA, Kazuhiro Nagashima, Go Tanaka, Yoshikazu Arai, Youko Arai
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Publication number: 20090293380Abstract: To provide a friction damper with simple construction having characteristics that there is little difference in resistance forces between at initial shock and after slide, and it is difficult to deform slide member under large fastening force, and large frictional force can stably be generated. The friction damper 1 comprising: a cylinder box 2; a cylinder member 6 axially fixed in the cylinder box; a slide bearing 7 press-fitted into an inner peripheral surface of the cylinder member; and a shaft 3 made of metal, the shaft being axially slidably press-fitted into an inner peripheral surface of the slide bearing; wherein when the cylinder box and the shaft move axially in relation to each other, an outer peripheral surface of the shaft and the inner peripheral surface of the slide bearing frictionally slide in relation to each other to absorb vibration energy.Type: ApplicationFiled: June 27, 2007Publication date: December 3, 2009Inventors: Kazuhiko Sasaki, Mitsuru Miyazaki, Kazuaki Shiki, Kazuhiro Nagashima
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Patent number: 7322451Abstract: A friction damper includes a base body; a support secured to an elongated member of the base body and having a through hole; a rod which extends in such a manner as to pass through the through hole of the support and is movable in an axial direction with respect to the support; a friction member which has a hollow cylindrical portion interposed between the support and a main body portion of the rod in the through hole of the support, and which is fixed immovably with respect to the relative movement of the rod in the axial direction with respect to the base body; and a tightening structure provided for the support so as to tighten the hollow cylindrical portion of the friction member onto the main body portion of the rod.Type: GrantFiled: January 15, 2003Date of Patent: January 29, 2008Assignee: Oiles CorporationInventors: Akihiko Okimura, Kazuhiro Nagashima, Go Tanaka, Yoshikazu Arai
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Publication number: 20070289828Abstract: A friction damper includes a base body; a support secured to an elongated member of the base body and having a through hole; a rod which extends in such a manner as to pass through the through hole of the support and is movable in an axial direction with respect to the support; a friction member which has a hollow cylindrical portion interposed between the support and a main body portion of the rod in the through hole of the support, and which is fixed immovably with respect to the relative movement of the rod in the axial direction with respect to the base body; and a tightening structure provided for the support so as to tighten the hollow cylindrical portion of the friction member onto the main body portion of the rod.Type: ApplicationFiled: August 8, 2007Publication date: December 20, 2007Applicant: OILES CORPORATIONInventors: Akihiko Okimura, Kazuhiro Nagashima, Go Tanaka, Yoshikazu Arai, Youko Arai
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Publication number: 20050087414Abstract: A friction damper includes a base body; a support secured to an elongated member of the base body and having a through hole; a rod which extends in such a manner as to pass through the through hole of the support and is movable in an axial direction with respect to the support; a friction member which has a hollow cylindrical portion interposed between the support and a main body portion of the rod in the through hole of the support, and which is fixed immovably with respect to the relative movement of the rod in the axial direction with respect to the base body; and a tightening structure provided for the support so as to tighten the hollow cylindrical portion of the friction member onto the main body portion of the rod.Type: ApplicationFiled: January 15, 2003Publication date: April 28, 2005Inventors: Akihiko Okimura, Kazuhiro Nagashima, Go Tanaka, Youko Arai
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Patent number: 4906011Abstract: The vacuum chuck, which is an accessory device for holding a workpiece in machining and inspection, has a suction head made of a porous sintered particles of a thermoplastic resin, e.g., a fluorocarbon resin, preferably, bonded to the chuck base. The suction head is free from the problem of unreliableness of holding of workpieces without the danger of damaging the workpiece. The outer peripheral surfaces of the sucking head are provided with an air-impermeable layer to increase the efficiency of suction by preventing leakage of vacuum. The water-and-oil-resistance of the suction head can be improved by blending the powder of the thermoplastic resin with a powder of a thermosetting resin, e.g., epoxy resin.Type: GrantFiled: December 27, 1988Date of Patent: March 6, 1990Assignee: Nikko Rica CorporationInventors: Makoto Hiyamizu, Kazuhiro Nagashima, Yasuhiro Tani