Patents by Inventor Akio Nakata

Akio Nakata 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).

  • Publication number: 20210177288
    Abstract: An object of the present invention is to provide an atrial fibrillation detection system in which: the extent of irregularity in measured pulse intervals is calculated; even in cases where an extrasystole has occurred, detection of a false positive is reduced even when the extrasystole is not excluded; and highly reliable assessment results are obtained.
    Type: Application
    Filed: December 7, 2020
    Publication date: June 17, 2021
    Applicant: UNION TOOL CO.
    Inventors: Ryo Shinozaki, Taishi Matsui, Akio Nakata
  • Publication number: 20090201761
    Abstract: There are provided a fluid injection nozzle, a fluid mixer, a microbubble generating apparatus, a vapor phase generating apparatus, a method of producing swirling flow, and a swirling flow producing apparatus that can be applied to any kind of fluid and can efficiently generate a swirling flow at high speed. The swirling flow producing apparatus includes a housing and a cylindrical member. The housing includes a cylindrical portion of which at least one end is opened, and a fluid introducing passage that is opened on an inner peripheral surface of the cylindrical portion. The cylindrical member is provided in the cylindrical portion of the housing. The cylindrical member includes a cylindrical portion of which at least one end in a direction corresponding to an opening direction of the cylindrical portion is opened, and holes formed in a peripheral wall of the cylindrical portion.
    Type: Application
    Filed: September 28, 2007
    Publication date: August 13, 2009
    Applicant: NAKATA COATING CO., LTD.
    Inventors: Takemi Matsuno, Akio Nakata
  • Patent number: 7370570
    Abstract: A fluid pressure cylinder can apply a fastening force to an axially movable reciprocating rod. A reciprocating rod 13 is mounted in a case main body 10 so as to be reciprocable in a forward direction and a backward direction, and two lock units 16a and 16b are incorporated in the case main body 10, and the lock units 16a and 16b include: lock sleeves 18a and 18b mounted axially movably and having taper surfaces 22a and 22b; and retainers 19a and 19b holding steel balls 21a and 21b that are fitted in the reciprocating rod 13 axially movably and engaged with the taper surfaces. A fastening cylinder 41 that contains a fastening rod so as to be reciprocable in a fastening direction and a fastening release direction is attached to the case main body 10, a fastening surface 44 contacting with the lock sleeves 18a and 18b being formed in the fastening rod, and the reciprocating rod 13 is fastened by the two lock units 16a and 16b.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: May 13, 2008
    Assignee: Koganei Corporation
    Inventors: Akio Nakata, Masakazu Tetsuka
  • Patent number: 7299739
    Abstract: A fluid pressure cylinder has a piston rod 18 fixed to a piston 26 and projecting outside a cylinder body 23. A lock surface 43 inclining to a radial direction of the piston rod 18 is formed in an engagement member 31 provided in the piston rod 18. A lock rod 35 reciprocating in an about right-angle direction to the piston rod 18 is built into a lock cylinder 33 provided in the cylinder body 23. The lock rod 35 is provided with: a large-diameter section 35a fitted into a guide hole 36 formed in the lock cylinder 33; and a slide contact section 37 provided in the large-diameter section 35a via a constriction section 35b. The slide contact section 37 contacts with a radial-inner portion of the lock surface 43 when the lock rod 35 comes nearest to the piston rod 18.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: November 27, 2007
    Assignee: Koganei Corporation
    Inventors: Akio Nakata, Masakazu Tetsuka
  • Publication number: 20070199441
    Abstract: A fluid pressure cylinder can apply a fastening force to an axially movable reciprocating rod. A reciprocating rod 13 is mounted in a case main body 10 so as to be reciprocable in a forward direction and a backward direction, and two lock units 16a and 16b are incorporated in the case main body 10, and the lock units 16a and 16b include: lock sleeves 18a and 18b mounted axially movably and having taper surfaces 22a and 22b; and retainers 19a and 19b holding steel balls 21a and 21b that are fitted in the reciprocating rod 13 axially movably and engaged with the taper surfaces. A fastening cylinder 41 that contains a fastening rod so as to be reciprocable in a fastening direction and a fastening release direction is attached to the case main body 10, a fastening surface 44 contacting with the lock sleeves 18a and 18b being formed in the fastening rod, and the reciprocating rod 13 is fastened by the two lock units 16a and 16b.
    Type: Application
    Filed: March 9, 2005
    Publication date: August 30, 2007
    Applicant: KOGANEI CORPORATION
    Inventors: Akio Nakata, Masakazu Tetsuka
  • Publication number: 20060140781
    Abstract: A fluid pressure cylinder has a piston rod 18 fixed to a piston 26 and projecting outside a cylinder body 23. A lock surface 43 inclining to a radial direction of the piston rod 18 is formed in an engagement member 31 provided in the piston rod 18. A lock rod 35 reciprocating in an about right-angle direction to the piston rod 18 is built into a lock cylinder 33 provided in the cylinder body 23. The lock rod 35 is provided with: a large-diameter section 35a fitted into a guide hole 36 formed in the lock cylinder 33; and a slide contact section 37 provided in the large-diameter section 35a via a constriction section 35b. The slide contact section 37 contacts with a radial-inner portion of the lock surface 43 when the lock rod 35 comes nearest to the piston rod 18.
    Type: Application
    Filed: January 29, 2004
    Publication date: June 29, 2006
    Applicant: Koganel Corporation
    Inventors: Akio Nakata, Masakazu Tetsuka
  • Patent number: 7035747
    Abstract: A method and apparatus for generating test sequences for communication protocols that inputs data of finite state machines (FSM) representing the specification of the communication protocols, converts the test sequence generation problem to the satisfiability problem (SAT problem), and generates test sequences for communication protocols by solving the SAT problem. The method converts the test sequence generation problem to the SAT problem by modifying the FSM and describing the test sequence generation problem using a conjunctive normal form formula based on the modified FSIM. By considering multiple input/output (UID) sequences and overlapping sequences, the method generates minimum length test sequence to check whether the states described in the specification of the protocol exist in the implementation of the FSM.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: April 25, 2006
    Assignees: National Institute of Information and Communications Technology
    Inventors: Takanori Mori, Hirotaka Otsuka, Nobuo Funabiki, Akio Nakata, Teruo Higashino
  • Patent number: 7007938
    Abstract: A workpiece cradle and a clamp arm is provided, and an arm opening/closing cylinder 15 for opening and closing the clamp arm and the workpiece cradle are attached to a moving block 13. To a workpiece-cradle driving cylinder 23 provided with a piston rod 25 for driving the moving block 13, fluid is supplied from workpiece-cradle driving supply/discharge ports 27a and 27b formed in a manifold block 21. To the moving block 13, guide rods 33a and 33b are fixed and, to the arm opening/closing cylinder 15, fluid is supplied, from arm driving supply/discharge ports 34a and 34b formed in the manifold block 21, via hollow holes 36a and 36b in the guide rods 33a and 33b and via fluid supply/discharge paths 43a and 43b in the moving block 13.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: March 7, 2006
    Assignees: Koganei Corporation, Fuji Jukogyo Kabushiki Kaisha
    Inventors: Akio Nakata, Masakazu Tetsuka, Noboru Sakamoto, Katsuhiro Ono
  • Publication number: 20050242482
    Abstract: A workpiece cradle and a clamp arm is provided, and an arm opening/closing cylinder 15 for opening and closing the clamp arm and the workpiece cradle are attached to a moving block 13. To a workpiece-cradle driving cylinder 23 provided with a piston rod 25 for driving the moving block 13, fluid is supplied from workpiece-cradle driving supply/discharge ports 27a and 27b formed in a manifold block 21. To the moving block 13, guide rods 33a and 33b are fixed and, to the arm opening/closing cylinder 15, fluid is supplied, from arm driving supply/discharge ports 34a and 34b formed in the manifold block 21, via hollow holes 36a and 36b in the guide rods 33a and 33b and via fluid supply/discharge paths 43a and 43b in the moving block 13.
    Type: Application
    Filed: May 16, 2003
    Publication date: November 3, 2005
    Applicants: Koganei Corporation, Fuji Jukogyo Kabushiki Kaisha
    Inventors: Akio Nakata, Masakazu Tetsuka, Noboru Sakamoto, Katsuhiro Ono
  • Publication number: 20050086020
    Abstract: The present invention's method and apparatus to generate test sequences for communication protocols input the data of the finite state machines (FSM) representing the specification of the communication protocols, and convert the test sequence generation problem to the SAT problem, and generate test sequences for communication protocols by solving the SAT problem. In addition, the present invention converts the test sequence generation problem to the SAT problem by modifying the FSM and describing the test sequence generation problem by using a conjunctive normal form formula based on the modified FSM. According to the present invention, by considering the multiple UIO sequences and the overlapping of the UIO sequences, the minimum length test sequence to check whether the states described in the specification of the protocol exist in the implementation of the FSM can be generated.
    Type: Application
    Filed: October 21, 2003
    Publication date: April 21, 2005
    Applicant: Communications Research Laboratory, Independent Administrative Institution
    Inventors: Takanori Mori, Hirotaka Otsuka, Nobuo Funabiki, Akio Nakata, Teruo Higashino
  • Patent number: 6439560
    Abstract: A clamp jig has a positioning pin provided at the tip of a cylindrical member, and a clamp arm is mounted in a slit formed in this positioning pin, so as to be able to swing and so as to be able to axially advance and retreat. A reciprocating shaft is connected to the clamp arm by a connecting pin, and a spring force is applied to this reciprocating shaft in a retreating direction by a compression coil spring. A plunger 35 brought into contact with the reciprocating shaft is mounted in a drive housing so as to be able to axially reciprocate, and a female screw member driven by a motor is thread-connected to a male screw member secured to this plunger. Accordingly, it is made possible to reliably perform positioning and clamping, of a member to be fixed, and unclamping thereof by a low-cost motor.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: August 27, 2002
    Assignee: Koganei Corporation
    Inventors: Ken Sawada, Akio Nakata, Masakazu Tetsuka
  • Publication number: 20010042951
    Abstract: A clamp jig has a positioning pin provided at the tip of a cylindrical member, and a clamp arm is mounted in a slit formed in this positioning pin, so as to be able to swing and so as to be able to axially advance and retreat. A reciprocating shaft is connected to the clamp arm by a connecting pin, and a spring force is applied to this reciprocating shaft in a retreating direction by a compression coil spring. A plunger 35 brought into contact with the reciprocating shaft is mounted in a drive housing so as to be able to axially reciprocate, and a female screw member driven by a motor is thread-connected to a male screw member secured to this plunger. Accordingly, it is made possible to reliably perform positioning and clamping, of a member to be fixed, and unclamping thereof by a low-cost motor.
    Type: Application
    Filed: February 14, 2001
    Publication date: November 22, 2001
    Inventors: Ken Sawada, Akio Nakata, Masakazu Tetsuka
  • Patent number: 5662740
    Abstract: In the manufacture of a single crystal film by epitaxial growth method, defects such as cracking are avoided by increasing the deviation of the lattice constant of the resulting film in the direction of growth from the substrate. Preferably, the deviation is increased at the rate of (0.4.about.9).times.10.sup.-4 %/.mu.m.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: September 2, 1997
    Assignee: TDK Corporation
    Inventors: Kazuhito Yamasawa, Atsushi Oido, Akio Nakata, Nobuya Uchida
  • Patent number: 5582611
    Abstract: A surgical device for stapling and fastening body tissues, comprises an insertion section extending from an operation section for insertion into a body cavity, stapling member connected to a distal end of the insertion section, for treating body tissues with a high-frequency current within a body cavity. The stapling member includes an anvil and a cartridge between which the tissues are sandwiched, and a cutter. Staples are applied to the anvil from the cartridge for stapling the tissues and the cutter cuts the tissue while it applies a high-frequency current thereto.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: December 10, 1996
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Minoru Tsuruta, Shiro Bito, Shuichi Kimura, Seiji Kuramoto, Tsuyoshi Tsukagoshi, Akio Nakata, Toshihiko Suzuta
  • Patent number: 5434101
    Abstract: In the manufacture of a single crystal film by epitaxial growth method, defects such as cracking are avoided by increasing the deviation of the lattice constant of the resulting film in the direction of growth from the substrate. Preferably, the deviation is increased at the rate of (0.4.about.9).times.10.sup.-4 %/.mu.m.
    Type: Grant
    Filed: March 2, 1993
    Date of Patent: July 18, 1995
    Assignee: TDK Corporation
    Inventors: Kazuhito Yamasawa, Atsushi Oido, Akio Nakata, Nobuya Uchida
  • Patent number: 5389098
    Abstract: A surgical device for stapling and fastening body tissues, comprises an insertion section extending from an operation section for insertion into a body cavity, stapling member connected to a distal end of the insertion section, for treating body tissues with a high-frequency current within a body cavity. The stapling member includes an anvil and a cartridge between which the tissues are sandwiched, and a cutter. Staples are applied to the anvil from the cartridge for stapling the tissues and the cutter cuts the tissue while it applies a high-frequency current thereto.
    Type: Grant
    Filed: May 14, 1993
    Date of Patent: February 14, 1995
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Minoru Tsuruta, Shiro Bito, Shuichi Kimura, Akito Mukaizawa, Seiji Kuramoto, Tsuyoshi Tsukagoshi, Akio Nakata, Akihiro Taguchi, Kazuhiko Oozeki, Hitoshi Mizno, Shuichi Takayama, Yoshinao Oaki, Keisuke Saito, Toshihiko Suzuta
  • Patent number: 5090103
    Abstract: A fastener carrier for the support of screw members which comprises a carrier strip having a substantial length and having at least one row of apertures defined therein in a direction lengthwise of the carrier strip, and screw members each having a head and a stem and removably mounted on the carrier strip with the stem received in the corresponding aperture in the carrier strip.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: February 25, 1992
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akio Nakata, Masahiro Yoshida, Koshiro Nakajima
  • Patent number: 4955476
    Abstract: A fastener carrier for supporting screw members which includes a carrier strip having a substantial length and at least one row of apertures defined therein in a direction lengthwise of the carrier strip, and screw members each having a head and a stem and removably mounted on the carrier strip with the stem received in the corresponding aperture in the carrier strip.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: September 11, 1990
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akio Nakata, Masahiro Yoshida, Koshiro Nakajima