Patents by Inventor Fumio Ueki
Fumio Ueki 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: 7255479Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes: a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: GrantFiled: March 20, 2006Date of Patent: August 14, 2007Assignee: NSK Ltd.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Publication number: 20060165322Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes: a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: ApplicationFiled: March 20, 2006Publication date: July 27, 2006Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Patent number: 7048443Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide-rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: GrantFiled: April 27, 2005Date of Patent: May 23, 2006Assignee: NSK Ltd.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Publication number: 20050190996Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide-rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: ApplicationFiled: April 27, 2005Publication date: September 1, 2005Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Publication number: 20040228551Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes: a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: ApplicationFiled: November 14, 2003Publication date: November 18, 2004Applicant: NSK LTD.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Patent number: 6672764Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: GrantFiled: October 4, 2002Date of Patent: January 6, 2004Assignee: NSK Ltd.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Patent number: 6550968Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: GrantFiled: June 7, 2001Date of Patent: April 22, 2003Assignee: NSK Ltd.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Publication number: 20030039413Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide-rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: ApplicationFiled: October 4, 2002Publication date: February 27, 2003Applicant: NSK LTD.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Publication number: 20020012481Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: ApplicationFiled: June 7, 2001Publication date: January 31, 2002Applicant: NSK LTD.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Patent number: 6334615Abstract: The present invention provides a seal for rolling bearings having improved sealing properties, undergoing no separation between a core and a peripheral portion nor deformation even in long-term use. The seal comprises a flexible resin portion which comes into contact with an outer race and a rigid resin portion which is more rigid than the flexible resin portion, the rigid resin portion and the flexible resin portion being fusion bonded together into an integral body.Type: GrantFiled: March 17, 1998Date of Patent: January 1, 2002Assignee: NSK Ltd.Inventors: Takahiko Uchiyama, Fumio Ueki, Magozou Hamamoto, Toshimi Takajo
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Patent number: 6257765Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide-rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes: a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider, and a pair of first cylindrical members inserted to the respective first recesses.Type: GrantFiled: August 10, 1999Date of Patent: July 10, 2001Assignee: NSK Ltd.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Patent number: 6019513Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide-rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: GrantFiled: July 11, 1996Date of Patent: February 1, 2000Assignee: NSK Ltd.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Patent number: 6004039Abstract: In a structure for lubricating an oil seal interposed between a shaft and an outer circumferential member that surrounds the shaft, a bearing device provides: a shaft rotatable; an outer case surrounding the shaft and including a large-diameter portion, a medium-diameter portion, a small-diameter portion, and a contact portion connecting the medium-diameter portion and the small-diameter portion; a bearing assembly disposed in the large-diameter portion for supporting the shaft; an oil seal assembly interposed between the shaft and the outer case and contacting the medium-diameter portion and the contact portion; and a lubricant-containing member fitted to the oil seal assembly and molded plastically in an annular shape out of a resinous material containing a lubricant. The structure improved by the bearing device ensures satisfactory lubricating effects in a consistent manner.Type: GrantFiled: April 26, 1996Date of Patent: December 21, 1999Assignee: NSK Ltd.Inventors: Toshikazu Yabe, Fumio Ueki, Hiroji Etoh
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Patent number: 5961222Abstract: An anti-electrolytic corrosion rolling bearing having at least an outer race, an inner race, and rolling elements interposed between the outer and inner races, which has an insulating body on at least one of the outer peripheral surface of the outer race, the inner peripheral surface of the inner race, and the side surfaces of the outer race and inner race, said insulating body being composed of an insulating film or insulating member each containing at least one of a thermoplastic synthetic resin, a rubber, and a thermoplastic elastomer as a base material and having a resistivity of not less than 1.times.10.sup.13 .OMEGA..multidot.cm and a thermal conductivity of not less than 0.5 W/m.multidot.K.Type: GrantFiled: November 7, 1997Date of Patent: October 5, 1999Assignee: NSK Ltd.Inventors: Toshikazu Yabe, Toshimi Takajo, Fumio Ueki, Takahiko Uchiyama, Shigeaki Abe, Takanori Yamada, Magozou Hamamoto, Kiyotoshi Ueda, Yasuhisa Terada, Yukio Ohura
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Patent number: 5857779Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide-rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes: a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: GrantFiled: July 11, 1996Date of Patent: January 12, 1999Assignee: NSK Ltd.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Patent number: 5772333Abstract: In a linear guide apparatus including a guide rail, a slider fitted movably to the guide rail, a plurality of rolling elements loaded to move the slider relative to the guide rail, and a seal device mounted on a side of the slider to seal a clearance existing between the guide rail and the slider, the seal device includes a reinforcement member that has a contact surface fixed to the slider and a recess formed in the contact surface to surround the outer surface of the guide rail, and a lubricant-containing polymer member that is fitted into the recess and has an inner sealing portion slidably contacting the guide rail and an outer surface opposed to the inner sealing portion and positioned at a predetermined clearance relative to the recess. The seal device assembling the lubricant-containing polymer member into the reinforcement member reduces a possibility of the occurrence of damage, cracking or other failures during fitting or use of the seal device.Type: GrantFiled: July 11, 1997Date of Patent: June 30, 1998Assignee: NSK Ltd.Inventors: Toshikazu Yabe, Fumio Ueki
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Patent number: 5769543Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes: a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: GrantFiled: October 11, 1996Date of Patent: June 23, 1998Assignee: NSK Ltd.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki, Toshimi Takajo
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Patent number: 5678927Abstract: In a linear guide apparatus including a guide rail, a slider fitted movably to the guide rail, a plurality of rolling elements loaded to move the slider relative to the guide rail, and a seal device mounted on a side of the slider to seal a clearance existing between the guide rail and the slider, the seal device includes a reinforcement member that has a contact surface fixed to the slider and a recess formed in the contact surface to surround the outer surface of the guide rail, and a lubricant-containing polymer member that is fitted into the recess and has an inner sealing portion slidably contacting the guide rail and an outer surface opposed to the inner sealing portion and positioned at a predetermined clearance relative to the recess. The seal device assembling the lubricant-containing polymer member into the reinforcement member reduces a possibility of the occurrence of damage, cracking or other failures during fitting or use of the seal device.Type: GrantFiled: March 12, 1996Date of Patent: October 21, 1997Assignee: NSK Ltd.Inventors: Toshikazu Yabe, Fumio Ueki
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Patent number: 5630668Abstract: A rolling bearing includes an outer raceway, an inner raceway, a plurality of rolling elements interposed between the outer raceway and the inner raceway, and a cage for holding the rolling elements away from each other at the same interval in a rolling direction of the rolling elements, the cage including a first layer subjected to a surface treatment of at least one of carbonitriding, phosphating, sulfonitriding and gas soft nitfriding, and a second layer formed of at least one of PTFE, MoS.sub.2, WS.sub.2, Ag and Sn when the first layer includes a treated surface subjected to the surface treatment of phosphating. The rolling bearing can stabilize the attitude of the rolling elements and retain the ease of grinding them. At the same time, the dynamic torque of the rolling elements can be minimized while insuring to prevent the rolling elements from falling away from the cage.Type: GrantFiled: August 21, 1995Date of Patent: May 20, 1997Assignee: NSK Ltd.Inventors: Katsuhiro Ikezawa, Hiroshi Iwasa, Yasuhiro Nomura, Toshiro Kawamura, Hiroshi Narai, Takashi Nagato, Dai Kinno, Tsutomu Abe, Magozo Hamamoto, Fumio Ueki, Toshimi Takajo