Patents by Inventor Hiroshi Takiuchi
Hiroshi Takiuchi 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).
-
Patent number: 9906473Abstract: A bearing performance automatic calculation service device is provided which allows a user to receive an automatic calculation service at any time in any location, which easily ensures reliability in terms of leakage of transmitted/received data, and which is easily used in terms of an input operation. An e-mail address is assigned, which is used only for receiving a request for an automatic calculation service. It is determined whether authentication information and a description content of a file 5 attached to an e-mail 4 satisfy a condition. Evaluation of performance of a bearing with respect to a determined evaluation item by means of a calculation formula on the basis of the file is performed. A result of the evaluation to the file 5 is added to create a sending file. The sending file 5 is attached and sent back by the e-mail sending module 17.Type: GrantFiled: April 21, 2014Date of Patent: February 27, 2018Assignee: NTN CORPORATIONInventors: Satomi Toyoda, Naoshi Ohashi, Hiroshi Takiuchi, Keiichi Ueda
-
Publication number: 20160127285Abstract: A bearing performance automatic calculation service device is provided which allows a user to receive an automatic calculation service at any time in any location, which easily ensures reliability in terms of leakage of transmitted/received data, and which is easily used in terms of an input operation. An e-mail address is assigned, which is used only for receiving a request for an automatic calculation service. It is determined whether authentication information and a description content of a file 5 attached to an e-mail 4 satisfy a condition. Evaluation of performance of a bearing with respect to a determined evaluation item by means of a calculation formula on the basis of the file is performed. A result of the evaluation to the file 5 is added to create a sending file. The sending file 5 is attached and sent back by the e-mail sending module 17.Type: ApplicationFiled: April 21, 2014Publication date: May 5, 2016Applicant: NTN CorporationInventors: Satomi TOYODA, Naoshi OHASHI, Hiroshi TAKIUCHI, Keiichi UEDA
-
Patent number: 8336210Abstract: Inner and outer ring spacers include respective load bearing portions, which are positioned on respective sides of a gap of a predetermined size and which confront with each other in an axial direction. Each of the inner and outer ring spacers is divided into two spacer segments along a surface of division extending in a direction perpendicular to the axial direction and passing through the associated load bearing portions. Inner and outer ring divided spacer segments, having the load bearing portions, are simultaneously machined so as to have the same axially measured width. Along therewith, inner ring divided spacer segments, having no load bearing portions, are simultaneously machined so as to have the same axially measured width, thereby rendering the latter axially measured width to be larger than the former axially measured width by a quantity corresponding to the gap.Type: GrantFiled: October 30, 2008Date of Patent: December 25, 2012Assignee: NTN CorporationInventor: Hiroshi Takiuchi
-
Patent number: 7874733Abstract: To provide a rolling bearing assembly, in which a grease filled within the bearing assembly is utilized to achieve a high speed feature, a long life and a maintenance-free and a lubricant oil can be stably supplied from a minute gap, a stepped face continued from the raceway surface is provided in a stationary raceway ring unit of an inner and outer ring units in a direction away from rolling elements. A gap forming piece having a free end confronting the stepped face is provided to define therebetween a flow passage and a grease reservoir communicated with the flow passage. The rolling bearing assembly is so designed that a heat cycle can be induced in the grease reservoir and, base oil of the grease can be urged to flow out from the gap by the effect of a pressure variation caused by the temperature rise.Type: GrantFiled: December 5, 2006Date of Patent: January 25, 2011Assignee: NTN CorporationInventors: Takuji Kobayashi, Masatsugu Mori, Sun-woo Lee, Hiroshi Takiuchi
-
Publication number: 20100306991Abstract: Inner and outer ring spacers include respective load bearing portions, which are positioned on respective sides of a gap of a predetermined size and which confront with each other in an axial direction. Each of the inner and outer ring spacers is divided into two spacer segments along a surface of division extending in a direction perpendicular to the axial direction and passing through the associated load bearing portions. Inner and outer ring divided spacer segments, having the load bearing portions, are simultaneously machined so as to have the same axially measured width. Along therewith, inner ring divided spacer segments, having no load bearing portions, are simultaneously machined so as to have the same axially measured width, thereby rendering the latter axially measured width to be larger than the former axially measured width by a quantity corresponding to the gap.Type: ApplicationFiled: October 30, 2008Publication date: December 9, 2010Applicant: NTN CorporationInventor: Hiroshi Takiuchi
-
Rust preventive package containing bearing for machine tool and and rust preventive packaging method
Patent number: 7819246Abstract: A rust preventive package to contain a bearing used for a machine tool includes a lubricant oil which is used when the bearing is operated, a vaporizable rust preventive sheet wrapped around the bearing, and a box. A method of packaging a bearing used in a machine tool includes applying a lubricant oil which is used when the bearing is operated and wrapping a vaporizable rust preventive sheet around the bearing.Type: GrantFiled: January 17, 2006Date of Patent: October 26, 2010Assignee: NTN CorporationInventors: Hiroshi Takiuchi, Tadayoshi Yonezawa -
Publication number: 20100046872Abstract: The object is to reduce the temperature rise and thermal expansion of the angular ball bearing by releasing heat produced therein to the housing, while keeping its outer race loosely fitted in the housing. By filling the gap between outer races 2a of combined angular ball bearings 2, which are loosely fitted in a housing 12, and the radially inner surface of the housing 12 with a heat conductive grease 3 containing inorganic powder as a heat conductive material, heat produced in the combined angular ball bearings 2 can be released from the outer races 2a to the housing 12 through the heat conductive grease 3. Thus, it is possible to reduce temperature rise and thermal expansion of the angular ball bearings 2, while keeping them loosely fitted in the housing.Type: ApplicationFiled: November 21, 2007Publication date: February 25, 2010Inventors: Hiroshi Takiuchi, Yasutsugu Tanaka
-
Publication number: 20090103844Abstract: To provide a rolling bearing assembly, in which a grease filled within the bearing assembly is utilized to achieve a high speed feature, a long life and a maintenance-free and a lubricant oil can be stably supplied from a minute gap, a stepped face continued from the raceway surface is provided in a stationary raceway ring unit of an inner and outer ring units in a direction away from rolling elements. A gap forming piece having a free end confronting the stepped face is provided to define therebetween a flow passage and a grease reservoir communicated with the flow passage. The rolling bearing assembly is so designed that a heat cycle can be induced in the grease reservoir and, base oil of the grease can be urged to flow out from the gap by the effect of a pressure variation caused by the temperature rise.Type: ApplicationFiled: December 5, 2006Publication date: April 23, 2009Inventors: Takuji Kobayashi, Masatsugu Mori, Sun woo Lee, Hiroshi Takiuchi
-
Publication number: 20080139420Abstract: To provide a rust preventive package containing a bearing used in a machine tool, which is free from occurrence of rusting while the bearing is packaged, which allows the bearing to be readily used in practice as removed from the package, and which does not require a time-consuming work in packaging, and also to provide a rust preventive packaging method. A bearing (2) for a machine tool, which is allowed a bearing oil to be applied, is wrapped with a vaporizable rust preventive sheet (3). Preferably employed bearing oil includes a lubricant used when the bearing (2) for the machine tool is operated.Type: ApplicationFiled: January 17, 2006Publication date: June 12, 2008Inventors: Hiroshi Takiuchi, Tadayoshi Yonezawa
-
Patent number: 7267489Abstract: A bearing assembly includes a double-row cylindrical roller bearing having no seals and having a grease sealed in its internal space. A double-row angular ball bearing having seals is provided in juxtaposition with one end face of the double-row cylindrical roller bearing. During run-in, part of the grease sealed in the double-row cylindrical roller bearing adheres to the outer surface of one of the seals of the angular ball bearing that faces the internal space of the cylindrical roller bearing. This increases the initial amount of grease sealed in the internal space of the cylindrical roller bearing, thereby prolonging its life.Type: GrantFiled: November 30, 2004Date of Patent: September 11, 2007Assignee: NTN CorporationInventors: Futoshi Kosugi, Hiroshi Takiuchi
-
Publication number: 20060291759Abstract: Contact surface pressure P increases rather drastically in proportion to skew angle ? within the range of 0<???T, but because the critical skew angle ? is restricted to be small, the contact surface pressure P changes in a low range below a certain level Po at which wear occurs in contact portions. Thus restricting the critical skew angle ?T to a small angle reduces the contact surface pressure P and suppresses heat generation and wear in the contact portions.Type: ApplicationFiled: March 13, 2003Publication date: December 28, 2006Inventors: Mineo Koyama, Hideto Torisawa, Hiroshi Takiuchi, Mamoru Mizutani
-
Patent number: 7150565Abstract: Contact surface pressure P increases rather drastically in proportion to skew angle ? within the range of 0<???T, but because the critical skew ?T is restricted to be small, the contact surface pressure P changes in a low range below a certain level P0 at which wear occurs in contact portions. Thus restricting the critical skew angle ?T to a small angle reduces the contact surface pressure P and suppresses heat generation and wear in the contact portions.Type: GrantFiled: March 13, 2003Date of Patent: December 19, 2006Assignee: NTN CorporationInventors: Mineo Koyama, Hideto Torisawa, Hiroshi Takiuchi, Mamoru Mizutani
-
Publication number: 20050117824Abstract: A bearing assembly includes a double-row cylindrical roller bearing having no seals and having a grease sealed in its internal space. A double-row angular ball bearing having seals is provided in juxtaposition with one end face of the double-row cylindrical roller bearing. During run-in, part of the grease sealed in the double-row cylindrical roller bearing adheres to the outer surface of one of the seals of the angular ball bearing that faces the internal space of the cylindrical roller bearing. This increases the initial amount of grease sealed in the internal space of the cylindrical roller bearing, thereby prolonging its life.Type: ApplicationFiled: November 30, 2004Publication date: June 2, 2005Inventors: Futoshi Kosugi, Hiroshi Takiuchi