Patents by Inventor Ryoichi Sato
Ryoichi Sato 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: 20030152749Abstract: In a retaining piece interposed between the adjacent rolling balls, a concave surface of each of both side surfaces of the retaining piece where it contacts with the spherical surfaces of the balls is configured to partly contact with the spherical surface of the ball. The concave surface includes a linear contact portion to be in contact with the ball and an approximate curved surface having the radius of curvature approximate to that of the ball, which is located on the inner side of the linear contact portion. In addition, recesses which are joined to the gate portion and the ejector pin in a molding process are formed in the concave surfaces. A recess is formed at the joining portion or near a parting line. Fins formed in the molding process are capable to be put into the recess.Type: ApplicationFiled: December 12, 2002Publication date: August 14, 2003Applicant: NSK LTD.Inventors: Shinichi Kasuga, Ryoichi Sato, Hiroki Yamaguchi
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Publication number: 20030113044Abstract: In the present linear guide bearing, the center of curvature O′ of a ball reversing passage 27 is shifted to a return side ball passage 25 side by a given amount m when compared with the center of curvature O′ of a conventional guide bearing. Due to this, not only the radius of curvature of a concave-arc-shaped groove 29 formed in each end cap 9 is reduced by a given amount m but also the concave-arc-shaped groove 29 is shifted to the return side ball passage 25 side by a given amount m, when compared with the conventional guide bearing. Thus, an angle &agr; formed between a line connecting the leading end of a tongue portion 31 to the center of curvature O′ of a ball reversing passage 27 and the moving-direction end face of a bearing main body 7, can be reduced significantly when compared with the conventional bearing.Type: ApplicationFiled: January 24, 2003Publication date: June 19, 2003Applicant: NSK LTD.Inventors: Shinichi Kasuga, Ryoichi Sato, Hiroki Yamaguchi
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Patent number: 6565947Abstract: In a retaining piece interposed between the adjacent rolling balls, a concave surface of each of both side surfaces of the retaining piece where it contacts with the spherical surfaces of the balls is configured to partly contact with the spherical surface of the ball. The concave surface includes a linear contact portion to be in contact with the ball and an approximate curved surface having the radius of curvature approximate to that of the ball, which is located on the inner side of the linear contact portion. In addition, recesses which are joined to the gate portion and the ejector pin in a molding process are formed in the concave surfaces. A recess is formed at the joining portion or near a parting line. Fins formed in the molding process are capable to be put into the recess.Type: GrantFiled: January 9, 2001Date of Patent: May 20, 2003Assignee: NSK Ltd.Inventors: Shinichi Kasuga, Ryoichi Sato, Hiroki Yamaguchi
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Publication number: 20030087063Abstract: In a retaining piece interposed between the adjacent rolling balls, a concave surface of each of both side surfaces of the retaining piece where it contacts with the spherical surfaces of the balls is configured to partly contact with the spherical surface of the ball. The concave surface includes a linear contact portion to be in contact with the ball and an approximate curved surface having the radius of curvature approximate to that of the ball, which is located on the inner side of the linear contact portion. In addition, recesses which are joined to the gate portion and the ejector pin in a molding process are formed in the concave surfaces. A recess is formed at the joining portion or near a parting line. Fins formed in the molding process are capable to be put into the recess.Type: ApplicationFiled: December 12, 2002Publication date: May 8, 2003Applicant: NSK LTD.Inventors: Shinichi Kasuga, Ryoichi Sato, Hiroki Yamaguchi
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Publication number: 20030087062Abstract: In a retaining piece interposed between the adjacent rolling balls, a concave surface of each of both side surfaces of the retaining piece where it contacts with the spherical surfaces of the balls is configured to partly contact with the spherical surface of the ball. The concave surface includes a linear contact portion to be in contact with the ball and an approximate curved surface having the radius of curvature approximate to that of the ball, which is located on the inner side of the linear contact portion. In addition, recesses which are joined to the gate portion and the ejector pin in a molding process are formed in the concave surfaces. A recess is formed at the joining portion or near a parting line. Fins formed in the molding process are capable to be put into the recess.Type: ApplicationFiled: December 12, 2002Publication date: May 8, 2003Applicant: NSK LTD.Inventors: Shinichi Kasuga, Ryoichi Sato, Hiroki Yamaguchi
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Publication number: 20030026998Abstract: An atomic oxygen-resistant film comprising an atomic oxygen-resistant film formed on a polyimide film, wherein the mass reduction rate thereof is no greater than 1.0% when irradiated with atomic oxygen at an irradiation dose of appromixately 3×1020 atoms/cm2 at a speed of about 8 km/sec.Type: ApplicationFiled: July 30, 2002Publication date: February 6, 2003Applicant: UBE INDUSTRIES, LTD.Inventors: Hiroaki Yamaguchi, Ryoichi Sato, Shuichi Hashiguchi, Masafumi Kohda
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Patent number: 6513977Abstract: In the present linear guide bearing, the center of curvature O′ of a ball reversing passage 27 is shifted to a return side ball passage 25 side by a given amount m when compared with the center of curvature, O′ of a conventional guide bearing. Due to this, not only the radius of curvature of a concave-arc-shaped groove 29 formed in each end cap 9 is reduced by a given amount m but also the concave-arc-shaped groove 29 is shifted to the return side ball passage 25 side by a given amount m, when compared with the conventional guide bearing. Thus, an angle &agr; formed between a line connecting the leading end of a tongue portion 31 to the center of curvature O′ of a ball reversing passage 27 and the moving-direction end face of a bearing main body 7, can be reduced significantly when compared with the conventional bearing.Type: GrantFiled: December 27, 2000Date of Patent: February 4, 2003Assignee: NSK Ltd.Inventors: Shinichi Kasuga, Ryoichi Sato, Hiroki Yamaguchi
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Patent number: 6435720Abstract: A linear guide device is provided with a plurality of rolling elements. A guide rail extending in an axial direction thereof and including a plurality of rolling element rolling grooves in two side portions thereof is provided in the device, wherein the rolling grooves extend in an axial direction of the guide rail. A slider includes a plurality of rolling element rolling grooves respectively opposed to the rolling element rolling grooves of the guide rail, wherein the slider is supported on the guide rail in such a manner that the slider is movable along the axial direction of the guide rail through the rolling movements of the rolling elements respectively inserted between the rolling element rolling grooves of the slider. The slider includes a rolling element endless circulation track along which the rolling elements are allowed to circulate endlessly; and a plurality of separators, each interposed between the adjoining rolling elements in the circulation direction of the rolling elements.Type: GrantFiled: January 21, 2000Date of Patent: August 20, 2002Assignee: NSK Ltd.Inventors: Shiroji Yabe, Soichiro Kato, Nobumitsu Takahashi, Ryoichi Sato, Yoshinori Mizumura, Hiroki Yamaguchi
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Patent number: 6371648Abstract: In order to reduce the amount of play of balls in a circulation path in a linear guide device to thereby reduce the noise during the running of the linear guide device and improve the quality and productivity of the device, the communicating portion of the straight portion of a ball circulation path in a slider body and the curved portions of ball circulation paths in end caps is constituted by faucet-fitting comprising a cylindrical convex portion provided so as to extend the curved portions relative to the communicating portion and a cylinder concave portion corresponding to the cylindrical convex portion provided in the straight portion.Type: GrantFiled: November 23, 1999Date of Patent: April 16, 2002Assignee: NSK Ltd.Inventors: Soichiro Kato, Shiroji Yabe, Yoshinori Mizumura, Hiroki Yamaguchi, Nobumitsu Takahashi, Ryoichi Sato
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Patent number: 6372038Abstract: The invention provides a concrete composition used in an overlay method of construction which is used for improving a deteriorated paved surface and/or a paved layer, the concrete composition comprising a cement, a shrink-reducing agent, an expanding agent, a high performance AE water-reducing agent and an AE agent, wherein the cement is a normal portland cement and/or a low heat portland cement. The concrete composition used in an overlay method of construction is rich in the bonding strength between an existent paved layer and a new surface layer and is resistant to exfoliation, cracking of a new surface layer and wear.Type: GrantFiled: December 28, 1999Date of Patent: April 16, 2002Assignee: New Tokyo International Airport AuthorityInventors: Shoichi Kameta, Ryoichi Sato, Yoichi Abe, Makoto Tanimura, Tetsuro Niinuma, Hidemi Nakamura, Shoichi Ogawa
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Patent number: 6357963Abstract: Provided is an overlay concrete which is good in bond to existing concrete fabrics and satisfies properties such as strength, durability and workability. The overlay concrete of the present invention comprises an AE water reducing agent or superplastisizer, and has a slump of 2 to 8 cm, a cement-water ratio of 35 to 45%, and a sand-coarse aggregate ratio of 36 to 42%.Type: GrantFiled: December 17, 1999Date of Patent: March 19, 2002Assignee: New Tokyo International Airport AuthorityInventors: Yoichi Abe, Shoichi Kameta, Ryoichi Sato, Satoshi Tanaka, Rokuro Tomita
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Publication number: 20020025087Abstract: Disclosed is a linear guide device in which a rate of change expressed as “Dmax−Dmin”, becomes extremely small where Dmax and Dmin are respectively a local maximum and a local minimum of D, expressed as (dx2−dx1)/dx, which is produced when a steel ball B moves a distance corresponding to a rolling element-to-rolling element span, dx1 is a minute movement quantity of a steel ball B when it moves from one space defined between rolling element rolling grooves 3 and 31 of an element endless circulating raceway 7, to one of curved element circulating R parts 6, and dx2 is a minute movement quantity of another steel ball B when it moves from the other curved element circulating R part 6 to the space while the former steel ball is moved by the minute movement quantity dx1.Type: ApplicationFiled: July 5, 2001Publication date: February 28, 2002Applicant: NSK LTD.Inventors: Hiroki Yamaguchi, Ryoichi Sato, Shinichi Kasuga, Kenji Kano, Soichiro Kato, Nobuaki Fujimura
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Publication number: 20020007659Abstract: An article handling system and method comprising a flow path along which articles travel and a metal detection system to detect the passage of metal items along the flow path. The system has a metal detector test system to support a metal test piece and positively move it along the flow path, and a metal detector to detect the metal test piece.Type: ApplicationFiled: May 25, 2001Publication date: January 24, 2002Inventors: Robert Bennett, Masahiko Muramiya, Michihiko Yonetsu, Takumi Kawamura, Ryoichi Sato
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Patent number: 6334695Abstract: In an inset light 1 comprising a cylindrical base 3 installed in a PC pavement 2, and a lamp body 5 held in the upper part of the base 3 for emitting light outside of the pavement surface, protruded deformations 6 are formed on the outer circumference of the base 3 so as to receive the load applied on the lamp body 5 from above at the PC pavement 2 around the base 3. As a result, concentration of load in the lower part of the base 3 is prevented. Further, to alleviate the prestress shortage of the PC pavement in the lower part of the base 3, a shock absorber 7 is provided in the lower end outer peripheral edge of the base 3. As a result, lowering of strength of the PC pavement 2 in the lower part of the base 3 is suppressed. Accordingly, if a heavy load of aircraft or the like is applied, the inset light capable of preventing sinking while suppressing brittleness of the PC pavement in the lower portion of the base can be presented.Type: GrantFiled: October 6, 2000Date of Patent: January 1, 2002Assignee: New Tokyo International Airport AuthorityInventors: Yoichi Abe, Shoichi Kameta, Katsuhiko Hagiwara, Shunji Kawabata, Ryoichi Sato
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Publication number: 20010043233Abstract: An agent interface controls display of an agent and receives a request from a user. A search engine searches for an action script describing a procedure of controlling the agent interface in accordance with the request input from the agent interface. An action script executing engine executes the action script searched by the search engine. Thus, since action scripts adapted to be used for the same kind but different types of electrical household appliances are prepared in action script DB, for example, the different types of electrical household appliances can be operated by the same procedure and interfaces can be unified.Type: ApplicationFiled: May 16, 2001Publication date: November 22, 2001Inventors: Ryoichi Sato, Kenichi Kuromusha, Akiyoshi Kawamura, Harumitsu Miyakawa, Ikuo Keshi
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Publication number: 20010012415Abstract: In the present linear guide bearing, the center of curvature O′ of a ball reversing passage 27 is shifted to a return side ball passage 25 side by a given amount m when compared with the center of curvature O′ of a conventional guide bearing. Due to this, not only the radius of curvature of a concave-arc-shaped groove 29 formed in each end cap 9 is reduced by a given amount m but also the concave-arc-shaped groove 29 is shifted to the return side ball passage 25 side by a given amount m, when compared with the conventional guide bearing. Thus, an angle &agr; formed between a line connecting the leading end of a tongue portion 31 to the center of curvature O′ of a ball reversing passage 27 and the moving-direction end face of a bearing main body 7, can be reduced significantly when compared with the conventional bearing.Type: ApplicationFiled: December 27, 2000Publication date: August 9, 2001Inventors: Shinichi Kasuga, Ryoichi Sato, Hiroki Yamaguchi
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Publication number: 20010008568Abstract: In a linear guide bearing apparatus wherein a separator is interposed between adjacent balls K and K moving following a curved circulating path 8, and the ball K contacts concave faces W of the separator T at both ends in an axial line direction and at the same time the ball K rolls as contacting a guide face 8a of an outside guiding member 5 and a guide face 8b of an inside guiding member 9, the separator has an outer diameter larger than a maximum outer diameter L&phgr; under a condition where the ball rolls as simultaneously contacting both curved faces 8a 8b of the inside and the outside of the curved circulating path 8, and the radius of curvature of the guiding face 8b in the curved circulating path 8 is reduced to a size not contacting the separator T.Type: ApplicationFiled: January 9, 2001Publication date: July 19, 2001Inventors: Shinichi Kasuga, Ryoichi Sato, Hiroki Yamaguchi
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Publication number: 20010007685Abstract: In a retaining piece interposed between the adjacent rolling balls, a concave surface of each of both side surfaces of the retaining piece where it contacts with the spherical surfaces of the balls is configured to partly contact with the spherical surface of the ball. The concave surface includes a linear contact portion to be in contact with the ball and an approximate curved surface having the radius of curvature approximate to that of the ball, which is located on the inner side of the linear contact portion. In addition, recesses which are joined to the gate portion and the ejector pin in a molding process are formed in the concave surfaces. A recess is formed at the joining portion or near a parting line. Fins formed in the molding process are capable to be put into the recess.Type: ApplicationFiled: January 9, 2001Publication date: July 12, 2001Inventors: Shinichi Kasuga, Ryoichi Sato, Hiroki Yamaguchi
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Publication number: 20010005974Abstract: A bagging and packaging machine for forming a bag from a strip of bag material and introducing an article into the bag includes a gas supply unit for supplying an inert gas into the bag to substitute for air contained in the bag and a gas supply control means for controlling supply of the inert gas by the gas supply means into the bag. The bagging and packaging machine is designed to allow the inert gas to be supplied under high pressure at a flow rate sufficient to increase the gas replacement rate in the bag when the machine is started, to be supplied under low pressure at a flow rate lower than the high pressure flow rate during a bagging and packaging operation subsequent to the start of the machine.Type: ApplicationFiled: December 27, 2000Publication date: July 5, 2001Applicant: ISHIDA CO., LTD.Inventors: Masashi Kondo, Ryoichi Sato
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Patent number: 6230552Abstract: When the unevenness quantities of the surface of a surface-treated, existing concrete are measured at a given pitch by a measuring device 10, the measured unevenness quantities are automatically collected by a CPU 21 to calculate the characteristic quantities of the surface-treated form of the existing concrete. The CPU 21 compares the calculated characteristic quantities with characteristic quantities beforehand stored in a data ROM 23 to give an evaluated result of the surface-treated form automatically. The evaluated result is displayed on a display device 40 or printed by a printer 50, so that the result can be immediately checked. An ideal surface-treated form is a surface-treated form in which the average height of unevenness of the surface of the existing concrete is from 13 to 35% of the maximum particle size of aggregates contained in the existing concrete, and the slope length ratio thereof is 1.Type: GrantFiled: January 20, 2000Date of Patent: May 15, 2001Assignee: New Tokyo International Airport AuthorityInventors: Yoichi Abe, Shoichi Kameta, Ryoichi Sato