Patents by Inventor Tetsuhiro Nishide
Tetsuhiro Nishide 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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Publication number: 20150003896Abstract: A ball joint is manufactured by molding a holder through casting by using a ball as a core and joining a shaft member to the ball after the casting through electric resistance welding. The ball joint includes: the ball; a resin sliding contact member including a first opening portion and a second opening portion that expose a spherical surface of the ball in opposite directions; the holder molded through the casting by using the ball and the resin sliding contact member as a core, the holder being obtained by integrally molding a closing portion that is held in contact with a part of the ball, which projects from the second opening portion of the resin sliding contact member; and the shaft member joined to another part of the ball, which is exposed from the first opening portion of the resin sliding contact member, through the electric resistance welding.Type: ApplicationFiled: December 14, 2012Publication date: January 1, 2015Applicant: THK CO., LTD.Inventors: Tetsuhiro Nishide, Tsutomu Tokairin, Haruki Shoji, Junya Suenaga
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Patent number: 8739410Abstract: Provided is a method of manufacturing a spherical bearing having an inside member with a metal ball portion and an outside member having a ball support portion enclosing and supporting the ball portion of the inside member and connected to the inside member swingably or rotatably relative to each other, including the steps of performing injection molding in which the ball portion of the inside member is inserted as a core in a mold to mold a resin liner covering the ball portion, molding the outside member covering the resin liner by a casting in which the ball portion and the resin liner are inserted as a core in the mold, and after the completion of the casting, heating the resin liner covering the ball portion through the ball portion of the inside member.Type: GrantFiled: December 9, 2010Date of Patent: June 3, 2014Assignee: THK Co., Ltd.Inventors: Hidekazu Michioka, Tomozumi Murata, Tetsuhiro Nishide
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Patent number: 8281490Abstract: Provided are a spherical bearing in which a ball portion (10) of an inside member (1) can be sealed inside an outside member (2) without employment of casting, and the outside member (2) and the inside member (1) are coupled to each other with high strength, and which can be downsized, and a manufacturing method for the same. The spherical bearing includes: an inside member (1) having a metal ball portion (10); a resin liner (3) covering the ball portion (10) of the inside member (1) and held in sliding contact with the ball portion (10); and an outside member (2) molded outside the resin liner (3) by a forging process and held in close contact with an entire of an outer peripheral surface of the resin liner (3) without being brought into contact with the inside member (1), for undetachably enclosing and holding the resin liner (3).Type: GrantFiled: July 31, 2007Date of Patent: October 9, 2012Assignee: THK Co., Ltd.Inventors: Tetsuhiro Nishide, Akira Morokuma
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Publication number: 20110072667Abstract: Provided is a method of manufacturing a spherical bearing having an inside member with a metal ball portion and an outside member having a ball support portion enclosing and supporting the ball portion of the inside member and connected to the inside member swingably or rotatably relative to each other, including the steps of performing injection molding in which the ball portion of the inside member is inserted as a core in a mold to mold a resin liner covering the ball portion, molding the outside member covering the resin liner by a casting in which the ball portion and the resin liner are inserted as a core in the mold, and after the completion of the casting, heating the resin liner covering the ball portion through the ball portion of the inside member.Type: ApplicationFiled: December 9, 2010Publication date: March 31, 2011Applicant: THK CO., LTD.Inventors: Hidekazu Michioka, Tomozumi Murata, Tetsuhiro Nishide
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Patent number: 7870673Abstract: Provided is a method of manufacturing a spherical bearing having an inside member with a metal ball portion and an outside member having a ball support portion enclosing and supporting the ball portion of the inside member and connected to the inside member swingably or rotatably relative to each other, including the steps of performing injection molding in which the ball portion of the inside member is inserted as a core in a mold to mold a resin liner covering the ball portion, molding the outside member covering the resin liner by a casting in which the ball portion and the resin liner are inserted as a core in the mold, and after the completion of the casting, heating the resin liner covering the ball portion through the ball portion of the inside member.Type: GrantFiled: April 15, 2004Date of Patent: January 18, 2011Assignee: THK Co., Ltd.Inventors: Hidekazu Michioka, Tomozumi Murata, Tetsuhiro Nishide
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Publication number: 20090279820Abstract: Provided are a spherical bearing in which a ball portion (10) of an inside member (1) can be sealed inside an outside member (2) without employment of casting, and the outside member (2) and the inside member (1) are coupled to each other with high strength, and which can be downsized, and a manufacturing method for the same. The spherical bearing includes: an inside member (1) having a metal ball portion (10); a resin liner (3) covering the ball portion (10) of the inside member (1) and held in sliding contact with the ball portion (10); and an outside member (2) molded outside the resin liner (3) by a forging process and held in close contact with an entire of an outer peripheral surface of the resin liner (3) without being brought into contact with the inside member (1), for undetachably enclosing and holding the resin liner (3).Type: ApplicationFiled: July 31, 2007Publication date: November 12, 2009Applicant: THK CO., LTD.Inventors: Tetsuhiro Nishide, Akira Morokuma
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Patent number: 7500409Abstract: A seal for a ball screw is provided with a foreign material removing member having a hole of a shape corresponding to a sectional shape of a ball screw shaft taken perpendicularly to an axis thereof to prevent a foreign material from invading from an outside of a ball screw nut and a seal member having a hole of a shape corresponding to a sectional shape of the ball screw shaft to retain a lubricant existing inside the ball screw nut. The foreign material removing member and the seal member are mounted to the ball screw shaft, at each of both the axial ends of the nut, while being overlapped to each other in a state that inner peripheral portions of the foreign material removing member and the seal member contact an outer peripheral surface of the ball screw shaft and the ball rolling groove thereof. The foreign material removing member is disposed outside the seal member in the axial direction of the ball screw nut.Type: GrantFiled: May 16, 2005Date of Patent: March 10, 2009Assignee: THK Co., Ltd.Inventors: Daisuke Yatsushiro, Tetsuhiro Nishide
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Publication number: 20090047063Abstract: Provided is a ball joint which enhances a sealing performance between a boot seal (4) and a ball shank (1) and which can maintain this sealing performance even during swinging motion of the ball shank (1) with respect to a holder (2), making it possible to completely prevent intrusion of dust and muddy water into a ball reception portion (20) of the holder (2) The ball shank (1) is provided with a flange portion (13), with a tapered surface (16) inclined with respect to an axial direction of the ball shank (1) being formed on the flange portion (13). The boot seal (4) is constructed of an annular fixation portion fixed to the holder (2), an annular seal portion (42) tightening a shaft portion (10) of the ball shank (1) and held in press contact with the flange portion (13).Type: ApplicationFiled: February 22, 2006Publication date: February 19, 2009Applicant: THK CO., LTD.Inventors: Takeki Shirai, Takashi Sakae, Takamasa Mitsugi, Tetsuhiro Nishide
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Patent number: 7430933Abstract: A seal for a ball screw is provided with a foreign material removing member having a hole of a shape corresponding to a sectional shape of a ball screw shaft taken perpendicularly to an axis thereof to prevent a foreign material from invading from an outside of a ball screw nut and a seal member having a hole of a shape corresponding to a sectional shape of the ball screw shaft to retain a lubricant existing inside the ball screw nut. The foreign material removing member and the seal member are mounted to the ball screw shaft, at each of both the axial ends of the nut, while being overlapped to each other in a state that inner peripheral portions of the foreign material removing member and the seal member contact an outer peripheral surface of the ball screw shaft and the ball rolling groove thereof. The foreign material removing member is disposed outside the seal member in the axial direction of the ball screw nut.Type: GrantFiled: July 8, 2005Date of Patent: October 7, 2008Assignee: THK Co., Ltd.Inventors: Daisuke Yatsushiro, Tetsuhiro Nishide
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Patent number: 7374339Abstract: A seal device fixed to an end portion of a slider of a guide device includes: a casing; a plurality of seal members; and elastic members, wherein each seal member has a recess portion in which a rail penetrates. An inner circumferential face of the recess portion comes into contact with an outer surface of the rail when the seal member is pushed onto one side of the rail by the elastic members. The plurality of seal members are arranged in the casing in such a manner that when a seal portion of one seal member is pushed by the elastic member and contacted with one side of the rail, a seal portion of the next seal member is pushed by the elastic member and contacted with the other side of the rail.Type: GrantFiled: February 9, 2005Date of Patent: May 20, 2008Assignee: THK Co., Ltd.Inventors: Hiroaki Mochizuki, Tetsuhiro Nishide
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Publication number: 20060150416Abstract: Provided is a method of manufacturing a spherical bearing having an inside member with a metal ball portion and an outside member having a ball support portion enclosing and supporting the ball portion of the inside member and connected to the inside member swingably or rotatably relative to each other, including the steps of performing injection molding in which the ball portion of the inside member is inserted as a core in a mold to mold a resin liner covering the ball portion, molding the outside member covering the resin liner by a casting in which the ball portion and the resin liner are inserted as a core in the mold, and after the completion of the casting, and heating the resin liner covering the ball portion through the ball portion of the inside member.Type: ApplicationFiled: April 15, 2004Publication date: July 13, 2006Inventors: Hidekazu Michioka, Tomozumi Murata, Tetsuhiro Nishide
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Patent number: 6976399Abstract: A wiper ring to be applied to a nut of a ball screw having a screw shaft comprises a plurality of segments each constituted as independent element having a seal portion to be contacted to the screw shaft, support pins extending in an axial direction of the screw shaft so as to correspond to the segments, respectively, the segments being arranged in a circumferential direction of the screw shaft to be rotatable about the pins, the pins being connected to each other through support members so as to limit the relative movement of the respective pins, and a spring member for urging the segments arranged circumferential direction of the screw shaft so as to be directed towards radially central side of the screw shaft.Type: GrantFiled: March 30, 2004Date of Patent: December 20, 2005Assignee: THK Co., LTDInventors: Hidekazu Michioka, Katsuya Iida, Tetsuhiro Nishide
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Publication number: 20050241419Abstract: A seal for a ball screw is provided with a foreign material removing member having a hole of a shape corresponding to a sectional shape of a ball screw shaft taken perpendicularly to an axis thereof to prevent a foreign material from invading from an outside of a ball screw nut and a seal member having a hole of a shape corresponding to a sectional shape of the ball screw shaft to retain a lubricant existing inside the ball screw nut. The foreign material removing member and the seal member are mounted to the ball screw shaft, at each of both the axial ends of the nut, while being overlapped to each other in a state that inner peripheral portions of the foreign material removing member and the seal member contact an outer peripheral surface of the ball screw shaft and the ball rolling groove thereof. The foreign material removing member is disposed outside the seal member in the axial direction of the ball screw nut.Type: ApplicationFiled: July 8, 2005Publication date: November 3, 2005Applicant: THK Co., Ltd.Inventors: Daisuke Yatsushiro, Tetsuhiro Nishide
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Publication number: 20050204836Abstract: A seal for a ball screw is provided with a foreign material removing member having a hole of a shape corresponding to a sectional shape of a ball screw shaft taken perpendicularly to an axis thereof to prevent a foreign material from invading from an outside of a ball screw nut and a seal member having a hole of a shape corresponding to a sectional shape of the ball screw shaft to retain a lubricant existing inside the ball screw nut. The foreign material removing member and the seal member are mounted to the ball screw shaft, at each of both the axial ends of the nut, while being overlapped to each other in a state that inner peripheral portions of the foreign material removing member and the seal member contact an outer peripheral surface of the ball screw shaft and the ball rolling groove thereof. The foreign material removing member is disposed outside the seal member in the axial direction of the ball screw nut.Type: ApplicationFiled: May 16, 2005Publication date: September 22, 2005Applicant: THK CO., LTD.Inventors: Daisuke Yatsushiro, Tetsuhiro Nishide
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Patent number: 6931955Abstract: A seal for a ball screw is provided with a foreign material removing member having a hole of a shape corresponding to a sectional shape of a ball screw shaft taken perpendicularly to an axis thereof to prevent a foreign material from invading from an outside of a ball screw nut and a seal member having a hole of a shape corresponding to a sectional shape of the ball screw shaft to retain a lubricant existing inside the ball screw nut. The foreign material removing member and the seal member are mounted to the ball screw shaft, at each of both the axial ends of the nut, while being overlapped to each other in a state that inner peripheral portions of the foreign material removing member and the seal member contact an outer peripheral surface of the ball screw shaft and the ball rolling groove thereof. The foreign material removing member is disposed outside the seal member in the axial direction of the ball screw nut.Type: GrantFiled: April 1, 2002Date of Patent: August 23, 2005Assignee: THK Co., LTDInventors: Daisuke Yatsushiro, Tetsuhiro Nishide
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Publication number: 20050169559Abstract: A seal device fixed to an end portion of a slider of a guide device includes: a casing; a plurality of seal members; and elastic members, wherein each seal member has a recess portion in which a rail penetrates. An inner circumferential face of the recess portion comes into contact with an outer surface of the rail when the seal member is pushed onto one side of the rail by the elastic members. The plurality of seal members are arranged in the casing in such a manner that when a seal portion of one seal member is pushed by the elastic member and contacted with one side of the rail, a seal portion of the next seal member is pushed by the elastic member and contacted with the other side of the rail.Type: ApplicationFiled: February 9, 2005Publication date: August 4, 2005Applicant: THK CO., LTD.Inventors: Hiroaki Mochizuki, Tetsuhiro Nishide
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Patent number: D561575Type: GrantFiled: March 29, 2007Date of Patent: February 12, 2008Assignee: THK Co., LtdInventors: Tetsuhiro Nishide, Toshihisa Sakamoto
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Patent number: D561576Type: GrantFiled: March 29, 2007Date of Patent: February 12, 2008Assignee: THK Co., Ltd.Inventors: Tetsuhiro Nishide, Toshihisa Sakamoto
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Patent number: D591588Type: GrantFiled: March 29, 2007Date of Patent: May 5, 2009Assignee: THK Co., Ltd.Inventors: Tetsuhiro Nishide, Toshihisa Sakamoto
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Patent number: D784801Type: GrantFiled: November 10, 2015Date of Patent: April 25, 2017Assignee: THK CO., LTD.Inventors: Tetsuhiro Nishide, Takuya Horie, Satoshi Kashiwagura