Patents by Inventor Takuya Murakami
Takuya Murakami 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: 6919665Abstract: In a stator core is formed by laminated strip-shaped straight cores including a plurality of teeth portions, bent portions being provided with V-shaped notches, which define V-shaped gaps opened to one direction and interposing between each of the teeth portions, the straight cores being formed into an annular configuration by bending the bent portions in a direction so as to close the V-shaped notches and circular holes being provided at the bent portions so as to form a series of gaps between each of the teeth portions. The straight cores further include deformation preventing portions formed on the bent portions by cutting off a part of a pair of oblique lines defining the V-shaped notches toward the circular holes so as to expand the gaps of the V-shaped notches and the circular holes for preventing the bent portions from deforming by stress of bending process.Type: GrantFiled: September 30, 2003Date of Patent: July 19, 2005Assignee: Nidec Shibaura CorporationInventors: Takuya Murakami, Toshiaki Murakami
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Patent number: 6895223Abstract: A mobile communication system including a fixed station, a detection unit, and mobile terminals, which provides a wireless communication for the mobile terminals. The detection unit detects a utilization condition indicative of a state where the mobile terminals are being used. The fixed station contains a storage unit that stores a utilization-admission condition indicative of a state where said mobile terminals are permitted to be used, and a processing unit for executing communications with the mobile terminals. The processing unit therefore halts communications with the mobile terminals in accordance with the utilization condition and utilization-admission condition.Type: GrantFiled: December 22, 2003Date of Patent: May 17, 2005Assignee: NEC CorporationInventor: Takuya Murakami
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Patent number: 6879821Abstract: A mobile communication system including a fixed station, a detection unit, and mobile terminals, which provides a wireless communication for the mobile terminals. The detection unit detects a utilization condition indicative of a state where the mobile terminals are being used. The fixed station contains a storage unit that stores a utilization-admission condition indicative of a state where said mobile terminals are permitted to be used, and a processing unit for executing communications with the mobile terminals. The processing unit therefore halts communications with the mobile terminals in accordance with the utilization condition and utilization-admission condition.Type: GrantFiled: February 23, 2001Date of Patent: April 12, 2005Assignee: NEC CorporationInventor: Takuya Murakami
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Publication number: 20050067912Abstract: In a stator core is formed by laminated strip-shaped straight cores including a plurality of teeth portions, bent portions being provided with V-shaped notches, which define V-shaped gaps opened to one direction and interposing between each of the teeth portions, the straight cores being formed into an annular configuration by bending the bent portions in a direction so as to close the V-shaped notches and circular holes being provided at the bent portions so as to form a series of gaps between each of the teeth portions. The straight cores further include deformation preventing portions formed on the bent portions by cutting off a part of a pair of oblique lines defining the V-shaped notches toward the circular holes so as to expand the gaps of the V-shaped notches and the circular holes for preventing the bent portions from deforming by stress of bending process.Type: ApplicationFiled: September 30, 2003Publication date: March 31, 2005Applicant: NIDEC SHIBAURA CORPORATIONInventors: Takuya Murakami, Toshiaki Murakami
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Publication number: 20050054369Abstract: A wireless terminal 1 obtains an access point ID from an access point 3 and receives setting information S from a setting information distribution server 2. Thereafter, the wireless terminal 1 transmits the setting information S and the access point ID to the access point 3. When the wireless terminal 1 is authenticated in the access point 3, the wireless terminal 1 receives a connection approval signal to a wireless LAN 4 from the access point 3.Type: ApplicationFiled: August 17, 2004Publication date: March 10, 2005Inventor: Takuya Murakami
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Publication number: 20040132484Abstract: A mobile communication system including a fixed station, a detection unit, and mobile terminals, which provides a wireless communication for the mobile terminals. The detection unit detects a utilization condition indicative of a state where the mobile terminals are being used. The fixed station contains a storage unit that stores a utilization-admission condition indicative of a state where said mobile terminals are permitted to be used, and a processing unit for executing communications with the mobile terminals. The processing unit therefore halts communications with the mobile terminals in accordance with the utilization condition and utilization-admission condition.Type: ApplicationFiled: December 22, 2003Publication date: July 8, 2004Applicant: NEC CORPORATIONInventor: Takuya Murakami
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Publication number: 20040132472Abstract: A mobile communication system including a fixed station, a detection unit, and mobile terminals, which provides a wireless communication for the mobile terminals. The detection unit detects a utilization condition indicative of a state where the mobile terminals are being used. The fixed station contains a storage unit that stores a utilization-admission condition indicative of a state where said mobile terminals are permitted to be used, and a processing unit for executing communications with the mobile terminals. The processing unit therefore halts communications with the mobile terminals in accordance with the utilization condition and utilization-admission condition.Type: ApplicationFiled: December 22, 2003Publication date: July 8, 2004Applicant: NEC CORPORATIONInventor: Takuya Murakami
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Patent number: 6760853Abstract: According to the power shutoff method for the TCP/IP network device, the connection status of the terminal connected to the TCP/IP network is monitored, whether the power can be shut off or not is judged based on the result of the monitoring, and the power for the terminal is shut off when it is judged acceptable to shut off the power in the judgment step.Type: GrantFiled: December 1, 2000Date of Patent: July 6, 2004Assignee: NEC CorporationInventor: Takuya Murakami
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Publication number: 20020174233Abstract: A protocol translation device realizes the merit of communications via the T/TCP protocol even if only one of devices in communication is compatible with T/TCP. The protocol translation device conducts protocol translation to relay communication packets sent and received between a TCP channel and a T/TCP channel, including a means for translating a T/TCP packet into a TCP packet by deleting a CC option and a CCnew option from the T/TCP packet, a means for translating a TCP packet into a T/TCP packet by adding CC, CCnew and/or CCecho options to the TCP packet and setting a CC value, and a means for assigning a value that is 16 bytes less than the maximum size of the packet to an MSS option for a communication device that communicates by the TCP protocol and instructing the communication device to transmit data with a packet that is 16 bytes or more smaller than the maximum size of the packet.Type: ApplicationFiled: May 15, 2002Publication date: November 21, 2002Applicant: NEC CORPORATIONInventor: Takuya Murakami
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Publication number: 20010018339Abstract: A mobile communication system including a fixed station, a detection unit, and mobile terminals, which provides a wireless communication for the mobile terminals. The detection unit detects a utilization condition indicative of a state where the mobile terminals are being used. The fixed station contains a storage unit that stores a utilization-admission condition indicative of a state where said mobile terminals are permitted to be used, and a processing unit for executing communications with the mobile terminals. The processing unit therefore halts communications with the mobile terminals in accordance with the utilization condition and utilization-admission condition.Type: ApplicationFiled: February 23, 2001Publication date: August 30, 2001Applicant: NEC CorporationInventor: Takuya Murakami
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Publication number: 20010003164Abstract: According to the power shutoff method for the TCP/IP network device, the connection status of the terminal connected to the TCP/IP network is monitored, whether the power can be shut off or not is judged based on the result of the monitoring, and the power for the terminal is shut off when it is judged acceptable to shut off the power in the judgment step.Type: ApplicationFiled: December 1, 2000Publication date: June 7, 2001Applicant: NEC CorporationInventor: Takuya Murakami
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Patent number: 6163757Abstract: The characteristics of the wire are calculated, the wire having a cross-sectional shape which is substantially uniform along its length and having a length long enough in comparison with a diameter being deformed. The wire is divided into a plurality of elements with predetermined spacing along the length. When the wire is deformed, the shape of the wire after the deformation is determined. In the determined shape, a tangential stiffness equation using the element as a basis is calculated, and the calculated tangential stiffness equation is translated into a tangential stiffness equation using the whole of the wire as a basis. A global stiffness equation representing the whole wire is calculated from the tangential stiffness equation obtained by the translation. A load or a displacement produced in each portion of the wire is calculated from the global stiffness equation and the determined shape of the wire.Type: GrantFiled: May 13, 1998Date of Patent: December 19, 2000Assignee: Tokyo Rope Mfg. Co., Ltd.Inventors: Tatsuhiko Aizawa, Guilan Wang, Junji Kihara, Sinji Kurashige, Takuya Murakami
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Patent number: 6116627Abstract: A front suspension for an automotive vehicle includes a wheel supporting member for rotatably supporting a road wheel of the vehicle. A lower link has a first end section rotatably connected to a lower section of the wheel supporting member, and a second end section connected to a vehicle body-side member so as to be swingable generally in a vertical direction of the vehicle. A connection member is rotatably installed to an upper section of the wheel supporting member so as to be rotatable around a first axis which passes through the wheel supporting member and extends generally in the vertical direction of the vehicle. A shock absorber has an upper end section pivotally connected to the vehicle body-side member, and a lower end section swingably connected to the connection member to be rotatable around a second axis which extends generally in a fore-and-aft direction of the vehicle. A spring is supported by the shock absorber and has a third axis.Type: GrantFiled: October 6, 1997Date of Patent: September 12, 2000Assignee: Nissan Motor Co., Ltd.Inventors: Yoshihiro Kawabe, Takuya Murakami, Kenji Kawagoe, Tamiyoshi Kasahara
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Patent number: 6062580Abstract: A steering knuckle has an upper portion and a lower portion. A lower link has an outer end pivotally supporting the lower portion of the steering knuckle and an inner end swingably supported by a vehicle body. A connecting member is mounted to the upper portion of the knuckle and rotatable about a first axis relative to the upper portion. A shock absorber has an upper end pivotally connected to the vehicle body at a first point and a lower portion connected to the connecting member. An upper link is pivotally connected to the connecting member at a second point and pivotally connected to the vehicle body at a third point. A tie rod is connected to the supporting member to rotate the same about the first axis. The first axis intersects a second axis passing through the second and third points and passes through a limited area containing the first point.Type: GrantFiled: June 11, 1998Date of Patent: May 16, 2000Assignee: Nissan Motor Co., Ltd.Inventors: Yoshihiro Kawabe, Takuya Murakami, Kenji Kawagoe, Tamiyoshi Kasahara
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Patent number: 5873587Abstract: According to a front suspension system, an upper control arm or link is pivoted at an inner end to a suspension member that is connected to a side rail. The upper link extends below the side rail and is connected at an outer end to a rotary joint receiving an upper edge portion of a knuckle. A lower control arm or link is pivotally mounted at two split distance inner ends to the suspension member and extends below the upper link, At an outer end portion, the lower link pivotally supports a lower edge portion of the knuckle. The rotary joint pivotally supports a bracket that holds a lower end portion of a shock absorber of a strut. The rotary joint has a joint axis that has an extension passing through a portion at which the lower edge portion pivots on the lower link. The upper link has a link axis that intersects the joint axis and an intermediate portion spaced along a longitudinal axis of the vehicle from the link axis.Type: GrantFiled: March 17, 1997Date of Patent: February 23, 1999Assignee: Nissan Motor Co., Ltd.Inventors: Yoshihiro Kawabe, Takuya Murakami, Takao Kuno
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Patent number: 5868410Abstract: A front wheel suspension for motor vehicles is constructed such that an upper link is so connected at one single end thereof to a connecting member as to provide an arrangement wherein loading a wheel support member in the lateral direction with respect to the normal forward driving direction of the motor vehicle induces a reaction force along a link axis of the upper link without inducing any substantial amount of moment about a king pin axis.Type: GrantFiled: September 19, 1996Date of Patent: February 9, 1999Assignee: Nissan Motor Co., Ltd.Inventors: Yoshihiro Kawabe, Takuya Murakami, Kenji Kawagoe, Takao Kuno
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Patent number: 5851016Abstract: A wheel suspension for rear wheels of an automotive vehicle, comprises a coil spring on a rear lateral link having an articulation point on an axle housing, a front lateral link, a radius rod and an upper arm having an articulation point on the axle housing at a position higher than a wheel center. A shock absorber is arranged such that its longitudinal axis crosses the wheel center as viewed the axle housing in a transverse direction with respect to a normal forward driving direction. The upper arm is connected to a suspension member via a forward pivot and a rearward pivot.Type: GrantFiled: September 13, 1996Date of Patent: December 22, 1998Assignee: Nissan Motor Co., Ltd.Inventors: Kenji Kawagoe, Takuya Murakami, Masaharu Satou, Takaaki Uno, Hideo Aimoto, Tamiyoshi Kasahara, Hiroshi Nagaoka
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Patent number: 5765858Abstract: A rear wheel suspension arrangement for an automotive vehicle provides an axle housing rotatably mounting rear vehicular road wheels, each of the wheels having a wheel center. At each wheel, a radius rod which extends forwardly and inwardly, as viewed in a normal forward direction of the vehicle, is connected to the axle housing at a first articulated connection at a position lower than the wheel center. Further, a front lateral link, extending generally transversely to the forward direction of the vehicle is connected to the axle housing at a second articulated connection also located below the wheel center. In addition, a rear lateral link, positioned rearwardly of the front lateral link and extending in the traverse direction of the vehicle, is connected to the axle housing at a third articulated connection also located below the wheel center. The suspension structure also includes an upper arm having an articulated connection to the axle housing at a position above the wheel center.Type: GrantFiled: September 13, 1996Date of Patent: June 16, 1998Assignee: Nissan Motor Co., Ltd.Inventors: Kenji Kawagoe, Takuya Murakami, Masaharu Satou, Takaaki Uno, Hideo Aimoto, Tamiyoshi Kasahara, Hiroshi Nagaoka
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Patent number: 5702122Abstract: An axle supporting member for a rear wheel is suspended to a suspension member by an upper link system which includes an A-arm and a side rod. The forward lower link member and the side rod are respectively arranged in front and rear of a vertical plane passing through a rotary axis of the rear wheel, while a suspension spring and a shock absorber are seated on the forward lower link member positioned in front of the above-mentioned vertical plane with respect to the longitudinal direction of the vehicle. Accordingly, an initial load transmitted from the suspension spring is mainly borne by the front end part of the suspension member, so that an initial load exerted to the rear end part of the suspension member becomes smaller. Thereby, it is possible to reduce the resilient deformation of bushings in the front and rear parts of the suspension member upon application of a wind-up input force.Type: GrantFiled: October 6, 1995Date of Patent: December 30, 1997Assignee: Nissan Motor Co., Ltd.Inventors: Masaharu Satou, Tamiyoshi Kasahara, Takuya Murakami, Kenji Kawagoe, Takaaki Uno, Hideo Aimoto, Tamaki Horiuchi
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Patent number: RE34151Abstract: A double link type front suspension system for an automotive vehicle of the front engine front drive type or the four wheel drive type. The suspension system is comprised of upper and lower control arms adapted to connect a steering knuckle to a vehicle body. A shock absorber is disposed .[.generally vertical.]. so that its upper end .[.section.]. is connected to the vehicle body .[.while its.]. .Iadd.and the .Iaddend.lower end .[.section.]. is .[.relatively rotatably.]. .Iadd.pivotally .Iaddend.connected .[.to.]. .Iadd.by way of a joint formed on the upper portion of .Iaddend.the knuckle .Iadd.to either the knuckle itself or the lower end of an intermediate arm which is connected between the .Iaddend.upper .[.section is made around.]. .Iadd.arm and the knuckle. The lower control arm is connected to the knuckle by way of a ball joint. A steering axis is defined by .Iaddend.a .[.straight.]. line (steering axis).]. passing through .[.a.]. .Iadd.the .Iaddend.ball joint .[.for connecting.]. .Iadd.Type: GrantFiled: June 27, 1990Date of Patent: December 29, 1992Assignee: Nissan Motor Co. Ltd.Inventors: Takuya Murakami, Toshihiko Kakimoto