Patents by Inventor Kiyoshi Ikehara
Kiyoshi Ikehara 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: 11118708Abstract: A high pressure hose with a reinforcing steel cord having twisted steel filaments. A first condition is a condition in which a winding direction of a steel cord in an Nth (N?1) steel cord reinforced layer and in an (N+1)th steel cord reinforced layer are different, and a winding direction of a steel cord in a first steel cord reinforced layer (11a) and a twisting direction of an outermost layer steel filament in the steel cord in the first steel cord reinforced layer (11a) are different. A second condition is a condition in which the twisting direction of the outermost layer steel filament in the steel cord in the first steel cord reinforced layer (11a) and of an outermost layer steel filament in a steel cord in a second steel cord reinforced layer (11b) are identical. The first condition and second condition are not simultaneously satisfied.Type: GrantFiled: September 9, 2019Date of Patent: September 14, 2021Assignee: BRIDGESTONE CORPORATIONInventors: Kiyoshi Ikehara, Teppei Shibata
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Publication number: 20200182381Abstract: Provided is a high pressure hose including a reinforcing layer having a braided structure excellent in durability. In a high pressure hose including at least one reinforcing layer having a braided structure in which a steel cord formed by twisting a plurality of steel filaments is braided, a crossing angle ? between an outermost layer steel filament of an S-wound steel cord 120a and an outermost layer steel filament of a Z-wound steel cord 120b of a reinforcing layer having a braided structure on the innermost in the hose radial direction of the reinforcing layers having a braided structure is 76° or less.Type: ApplicationFiled: February 14, 2020Publication date: June 11, 2020Applicant: BRIDGESTONE CORPORATIONInventor: Kiyoshi IKEHARA
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Publication number: 20200003340Abstract: High pressure hose 10 includes a structure formed by layering plural steel cord reinforced layers 11 formed by spirally winding a steel cord formed by twisting plural steel filaments, in which assuming that the direction of winding a steel cord in the Nth (N?1) steel cord reinforced layer and the direction of winding a steel cord in the (N+1)th steel cord reinforced layer are different from each other, and a cross angle ?N?(N+1) is an angle between an outermost layer steel filament in a hose radial direction outer side of the steel cord in the Nth steel cord reinforced layer 11 and an outermost layer steel filament in a hose radial direction inner side of the steel cord in the (N+1)th steel cord reinforced layer 11, a cross angle ?1-2 satisfies a relationship represented by the following Formula (1): ?1-2<76° (1).Type: ApplicationFiled: September 9, 2019Publication date: January 2, 2020Applicant: BRIDGESTONE CORPORATIONInventors: Kiyoshi IKEHARA, Teppei Shitbata
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Publication number: 20200003342Abstract: A high pressure hose with a reinforcing steel cord having twisted steel filaments. A first condition is a condition in which a winding direction of a steel cord in an Nth (N?1) steel cord reinforced layer and in an (N+1)th steel cord reinforced layer are different, and a winding direction of a steel cord in a first steel cord reinforced layer (11a) and a twisting direction of an outermost layer steel filament in the steel cord in the first steel cord reinforced layer (11a) are different. A second condition is a condition in which the twisting direction of the outermost layer steel filament in the steel cord in the first steel cord reinforced layer (11a) and of an outermost layer steel filament in a steel cord in a second steel cord reinforced layer (11b) are identical. The first condition and second condition are not simultaneously satisfied.Type: ApplicationFiled: September 9, 2019Publication date: January 2, 2020Applicant: BRIDGESTONE CORPORATIONInventors: Kiyoshi Ikehara, Teppei Shibata
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Patent number: 10479426Abstract: A rubber crawler including: an endless belt shaped rubber belt; a main cord layer that is disposed within the rubber belt, that is configured by plural main cords extending along a crawler peripheral direction and arranged side-by-side in a crawler width direction, and that is formed with an overlapping portion where both end, sides in the crawler peripheral direction overlap one another in a crawler thickness direction; and a stretching and contracting portion that is formed at the overlapping portion of the main cords, and is capable of stretching and contracting more in the crawler peripheral direction than other portions of the main cords, wherein the stretching and contracting portion includes a curved portion where the main cords are curved with an amplitude in the crawler width direction as viewed along the crawler thickness direction.Type: GrantFiled: February 25, 2014Date of Patent: November 19, 2019Assignee: BRIDGESTONE CORPORATIONInventors: Shuichi Matsuo, Kiyoshi Ikehara
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Publication number: 20190263179Abstract: Provided is a steel cord for reinforcing rubber articles, which can prevent a reduction in the strength of the steel cord caused by twisting steel filaments, and a tire and a crawler using the steel cord. Provided is a steel cord 1 for reinforcing rubber articles formed by twisting a plurality of sheath strands 3 are twisted around a core strand 2, and the core strand 2 comprises: a core composed of two core filaments 2a aligned in parallel without being twisted; and at least one sheath composed of a plurality of sheath filaments 2b twisted around the core, and a diameter dc of the core filament 2a and a diameter ds of the sheath filament 2b satisfy the following expression (1): dc<ds ??(1) and the tensile strength T (MPa) of the core filament 2a satisfies the relationship represented by the following expression (2): T<3650?17000×(dc?0.15)2 ??(2).Type: ApplicationFiled: May 14, 2019Publication date: August 29, 2019Inventors: Kiyoshi IKEHARA, Mitsuru Kinoshita
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Publication number: 20160001830Abstract: A rubber crawler serving as an example of a crawler of the present invention includes: an endless belt shaped rubber belt; a main cord layer that is disposed within the rubber belt, that is configured by plural main cords extending along a crawler peripheral direction and arranged side-by-side in a crawler width direction, and that is formed with an overlapping portion where both end sides in the crawler peripheral direction overlap one another in a crawler thickness direction; and a stretching and contracting portion that is formed at the overlapping portion of the main cords, and is capable of stretching and contracting more in the crawler peripheral direction than other portions of the main cords, wherein the stretching and contracting portion includes a curved portion where the main cords are curved with an amplitude in the crawler width direction as viewed along the crawler thickness direction.Type: ApplicationFiled: February 25, 2014Publication date: January 7, 2016Inventors: Shuichi MATSUO, Kiyoshi IKEHARA
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Patent number: 8649430Abstract: A bit rate converter for converting a first encoded animation image data to a second animation image data, having a different bit rate. The converter stores an assessment value indicating the importance level within each reproduction time interval with respect to the first animation image data. Second animation image data is generated by arithmetically determining the bit rate of the second animation image data on the basis of the bit rate information on the first animation image data and the assessment value indicating the importance level within a preselected time interval with respect to the first animation image data. Accordingly, a larger amount of code is preferentially allocated to the time interval having an assessment value of higher importance level.Type: GrantFiled: June 3, 2009Date of Patent: February 11, 2014Inventors: Kiyoshi Ikehara, Yoshinori Musha, Toshimitsu Honkawa
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Patent number: 8365180Abstract: An in-vehicle terminal (101) is provided, which has a function ensuring that computer resource secured by a virtual machine (1a1) or a virtual machine (1b1) is controlled within a limit value of the computer resource that is allocated to the corresponding virtual machine, or a function which is capable of executing multiple virtual machines appropriately. When the virtual machine (1a1) or the virtual machine (1b1) requests securing the computer resource, the in-vehicle terminal (101) requests the OS (143) to secure computer resource in response to the request, if the requested resource is lower than the limit value of the computer resource that is allocated to the corresponding virtual machine.Type: GrantFiled: June 28, 2006Date of Patent: January 29, 2013Assignee: Xanavi Informatics CorporationInventors: Shinichiro Kawasaki, Kiyoshi Ikehara, Masaki Nakano
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Publication number: 20120073721Abstract: A rubber-steel cord composite is provided having nonlinear physical properties even in a rubber characterized by incompressive properties after vulcanization, and hence the rubber-steel cord composite can show low rigidity and flexible properties in a low-strain region and, on the other hand, can show high rigidity in a high-strain region. The rubber-steel cord composite is provided by bundling steel linear objects 1 subjected to spiral shape forming at substantially identical pitches in an approximately identical phase without twisting, the steel cord being embedded in rubber.Type: ApplicationFiled: December 6, 2011Publication date: March 29, 2012Applicant: BRIDGESTONE CORPORATIONInventors: Hiroki ISHIZAKA, Kiyoshi IKEHARA
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Patent number: 8117818Abstract: A steel cord has a multi-twist structure in which N (N=2 to 8) strands 2 are twisted, each strand 2 being formed by twisting a plurality of element wires 1 and having a substantially elliptical cross-section, wherein d1/d2>1.08 is satisfied, where the major diameter of the strand 2 is represented by d1 and the minor diameter is represented by d2, and ?e defined by the following equation: ?c=?(?b/2+?(b2/4?c))?1 (in the equation, b represents ?1+?2(?4R2+d2)/P2, c represents ?2d2k(4?2R2+P2)/P4, R represents (D?d)/2, k represents tan2(?/2??/N), and d represents (d1+d2)/2) satisfies ?c>0.005, where the diameter of a circle circumscribing the cord is represented by D (mm) and the twist pitch of the cord is represented by P (mm).Type: GrantFiled: August 23, 2007Date of Patent: February 21, 2012Assignee: Bridgestone CorporationInventor: Kiyoshi Ikehara
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Patent number: 7934527Abstract: Provided is a pneumatic radial tire including a carcass layer composed of a carcass ply 12 and a spiral belt layer 26 composed of steel cords wound spirally substantially in parallel with each other to a tire equator surface. When the ratio of spacing R1 between adjacent steel cords of the spiral belt layer 26 is shown by R1=(50?E×ds)/50, the ratio of spacing R1 is 0.45 or less as well as the total sectional area S of the steel cords applied per 50 mm width of the spiral belt layer is 7.5 mm2 or less (E shows the number of steel cords applied per 50 mm width of the spiral belt layer, and ds shows the diameter (mm) of each steel cord). The number of steel cords E applied per 50 mm of width ranges from 66 to 200.Type: GrantFiled: May 23, 2005Date of Patent: May 3, 2011Assignee: Bridgestone CorporationInventor: Kiyoshi Ikehara
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Publication number: 20100333148Abstract: A buffer monitoring section of the display device monitors a usage status of a buffer for storing video data, and transmits this usage status information to the tuner device. A remaining buffer time estimation section estimates a remaining time of video data within the buffer based on the usage status information of the buffer. A wireless bandwidth estimation section estimates the wireless bandwidth between the tuner device and the display device. A content bit rate control section controls a content bit rate of video data transmitted to the display device based on the estimated remaining time and wireless bandwidth of the video data. A content bit rate converting section changes the content bit rate of video data, and transmits the video data from the tuner device to the display device.Type: ApplicationFiled: May 26, 2010Publication date: December 30, 2010Inventors: Yoshinori MUSHA, Kiyoshi IKEHARA
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Publication number: 20100218872Abstract: A rubber-steel cord composite is provided having nonlinear physical properties even in a rubber characterized by incompressive properties after vulcanization, and hence the rubber-steel cord composite can show low rigidity and flexible properties in a low-strain region and, on the other hand, can show high rigidity in a high-strain region. The rubber-steel cord composite is provided by bundling steel linear objects 1 subjected to spiral shape forming at substantially identical pitches in an approximately identical phase without twisting, the steel cord being embedded in rubber.Type: ApplicationFiled: January 19, 2007Publication date: September 2, 2010Applicant: BRIDGESTONE CORPORATIONInventors: Hiroki Ishizaka, Kiyoshi Ikehara
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Publication number: 20100038006Abstract: A tire for a two-wheeled vehicle in which cornering controllability (cornering performance) is improved without impairing various performances of the tire such as straight-ahead driving performance, high-speed ability, ride comfort, and uniformity is provided. It is a tire for a two-wheeled vehicle including a tread portion 11, side wall portions 12 disposed radially inside the tire from both edges thereof, bead portions 31 continuing radially inside the tire, a carcass layer 22 for reinforcing these portions between bead cores 21 embedded in the bead portions, and a spiral belt 23 formed outside the carcass layer in the radial direction of the tire by spirally wound so as to extend substantially in parallel to the circumferential direction of the tire.Type: ApplicationFiled: March 17, 2008Publication date: February 18, 2010Applicant: BRIDGESTONE CORPORATIONInventor: Kiyoshi Ikehara
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Publication number: 20100000645Abstract: A steel cord which has no production problem noted in the related art and which can be produced efficiently with stable quality, particularly a steel cord useful for the purpose of reinforcing a tire crown portion, as well as a composite of rubber and steel cord and a tire, which include the steel cord, are provided. A steel cord has a multi-twist structure in which N (N=2 to 8) strands 2 are twisted, each strand 2 being formed by twisting a plurality of element wires 1 and having a substantially elliptical cross-section, wherein d1/d2>1.08 is satisfied, where the major diameter of the strand 2 is represented by d1 and the minor diameter is represented by d2, and ?c defined by the following equation: ?c=?{square root over ( )}(?b/2+?{square root over ( )}(b2/4?c))?1 (in the equation, b represents ?1+?2(?4R2+d2)/P2, c represents ?2d2k(4?2R2+P2)/P4, R represents (D?d)/2, k represents tan2(?/2??/N), and d represents (d1+d2)/2) satisfies ?c>0.Type: ApplicationFiled: August 23, 2007Publication date: January 7, 2010Applicant: BRIDGESTONE CORPORATIONInventor: Kiyoshi Ikehara
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Publication number: 20090304072Abstract: A bit rate converter for converting a first encoded animation image data to a second animation image data, having a different bit rate. The converter stores an assessment value indicating the importance level within each reproduction time interval with respect to the first animation image data. Second animation image data is generated by arithmetically determining the bit rate of the second animation image data on the basis of the bit rate information on the first animation image data and the assessment value indicating the importance level within a preselected time interval with respect to the first animation image data. Accordingly, a larger amount of code is preferentially allocated to the time interval having an assessment value of higher importance level.Type: ApplicationFiled: June 3, 2009Publication date: December 10, 2009Applicant: HITACHI, LTD.Inventors: Kiyoshi Ikehara, Yoshinori Musha, Toshimitsu Honkawa
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Patent number: 7631215Abstract: A personal digital assistant comprises a loss detector to detect a lost state and a value information retainer for retaining a value assessment index, which are numerical values indicating data values. When a lost state is detected by the loss detector, a data recovery sequence is determined based on the data values and data is transmitted to another terminal. In determining the recovery sequence, electrical energy required for data transmission is calculated using a power consumption table and the remaining battery power level measured by a remaining battery power level meter is referenced.Type: GrantFiled: December 13, 2005Date of Patent: December 8, 2009Assignee: Casio Hitachi Mobile Communications Co., Ltd.Inventors: Kiyoshi Ikehara, Kenji Kitagawa, Yoshiaki Morimoto
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Patent number: 7476285Abstract: A motorcycle tire having excellent belt cord durability, high-speed durability, impact force absorbability, running stability and uniformity performances is produced by constituting a belt with a low-cost steel cord member having a specified twisting construction of 2 to 7 filaments and a specified space between the mutual filaments over a full length of the cord in the belt.Type: GrantFiled: January 21, 2005Date of Patent: January 13, 2009Assignee: Bridgestone CorporationInventors: Kiyoshi Ikehara, Sumito Nakagawa, Tsutomu Nakamura
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Publication number: 20090000717Abstract: A steel cord that is especially useful for reinforcing a crown portion of a tire is provided. In particular, a steel cord free from manufacturing problems existed in the conventional art and allowing for stable quality and good production efficiency is provided, and a rubber-steel cord composite and a tire that are equipped with the same are provided. A steel cord has a multiple-twist structure including N (N=2 to 8) strands 2 that are twisted together, each strand 2 having a plurality of wires 1 that are twisted together. When the diameter of each strand is denoted by d (mm), the diameter of a circle circumscribing the cord is denoted by D (mm), and the twisting pitch of the cord is denoted by P (mm), ?c defined by the following expression, ?c=?(?b/2+?(b2/4?c))?1 (where b denotes ?1+?2(?4R2+d2)/P2, c denotes ?2d2k(4?2R2+P2)/P4, R denotes (D?d)/2, and k denotes tan2(?/2??/N)), satisfies ?c?0.005.Type: ApplicationFiled: February 7, 2007Publication date: January 1, 2009Applicant: BRIDGESTONE CORPORATIONInventor: Kiyoshi Ikehara