Patents by Inventor Naoto Naganuma

Naoto Naganuma 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: 10514286
    Abstract: A gas flowmeter includes: device body (1) which accommodates a fluid to be measured; inlet pipe (4) through which the fluid to be measured flows into device body (1); and outlet pipe (5) through which the fluid to be measured flows out from device body (1) through connecting pipe (7). The gas flow meter also includes: ultrasonic flow rate measuring unit (9) which has a first end side connected to outlet pipe (5) and performs flow rate measurement of the fluid to be measured which flows in ultrasonic flow rate measuring unit (9); and connecting pipe (7) which is disposed between ultrasonic flow rate measuring unit (9) and outlet pipe (5), and is connected to outlet pipe (5). The gas flow meter further includes support member (10) which supports a second end side of ultrasonic flow rate measuring unit (9).
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: December 24, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hideaki Morihana, Masato Satou, Hidetomo Nagahara, Masanobu Teraji, Naoto Naganuma
  • Patent number: 10500853
    Abstract: A piezoelectric device including a pressure chamber, a piezoelectric element, and a vibration plate, in which the piezoelectric element is provided with a first electrode, a second electrode, and a piezoelectric layer, the vibration plate has a first portion overlapping the piezoelectric element and a second portion having a thickness smaller than that of the first portion and overlapping an inner peripheral surface of a side wall of the pressure chamber, a side surface of the piezoelectric element which intersects the vibration plate has a first surface inclined at a first angle, the vibration plate has a second surface, between the first portion and the second portion, inclined at a second angle smaller than the first angle, and an end portion of the second surface on the side wall side of the pressure chamber overlaps the side wall of the pressure chamber.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: December 10, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Masao Nakayama, Eiju Hirai, Naoto Yokoyama, Motoki Takabe, Yoichi Naganuma
  • Patent number: 10317263
    Abstract: A gas flowmeter includes: a device body which air-tightly accommodates a fluid to be measured; an inlet pipe through which the fluid to be measured is made to flow into the device body; and an outlet pipe through which the fluid to be measured is made to flow out from the device body. The gas flowmeter further includes: an ultrasonic flow rate measuring unit which is connected to the outlet pipe and measures a flow rate of the fluid to be measured which flows in the ultrasonic flow rate measuring unit; a connecting pipe which is connected to the outlet pipe; and a flow passage member which is connected to the connecting pipe and has a flow passage shape identical to a shape of the ultrasonic flow rate measuring unit. The gas flowmeter is provided with a support member which fixes the ultrasonic flow rate measuring unit and the flow passage member to each other. With such a configuration, a gas flow meter capable of performing stable flow rate measurement can be implemented.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: June 11, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masato Satou, Masanobu Teraji, Hidetomo Nagahara, Hideaki Morihana, Naoto Naganuma
  • Patent number: 9528624
    Abstract: A shutoff valve according to the present invention includes: a motor configured to cause a rotating shaft to rotate; a lead screw formed on the rotating shaft; a lead nut into which the lead screw is screwed; and a valve element configured to block a passage, the valve element being configured to move in an axial direction in accordance with rotation of the rotating shaft. A dry lubricating coating is formed on a contact surface where the lead screw and the lead nut come into contact with each other. A thread pitch of the lead screw is set such that a current applied to the motor, the current being in relation to an inductance of the motor, is in a range that does not cause explosion of the fuel gas and that allows thrust force necessary for moving the valve element to be obtained.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: December 27, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Naoto Naganuma, Yuji Nakabayashi, Hideaki Morihana, Masaki Sugiyama, Hiroshi Nakai, Akihisa Adachi
  • Publication number: 20160370215
    Abstract: A gas flowmeter includes: a device body which air-tightly accommodates a fluid to be measured; an inlet pipe through which the fluid to be measured is made to flow into the device body; and an outlet pipe through which the fluid to be measured is made to flow out from the device body. The gas flowmeter further includes: an ultrasonic flow rate measuring unit which is connected to the outlet pipe and measures a flow rate of the fluid to be measured which flows in the ultrasonic flow rate measuring unit; a connecting pipe which is connected to the outlet pipe; and a flow passage member which is connected to the connecting pipe and has a flow passage shape identical to a shape of the ultrasonic flow rate measuring unit. The gas flowmeter is provided with a support member which fixes the ultrasonic flow rate measuring unit and the flow passage member to each other. With such a configuration, a gas flow meter capable of performing stable flow rate measurement can be implemented.
    Type: Application
    Filed: January 22, 2015
    Publication date: December 22, 2016
    Inventors: MASATO SATOU, MASANOBU TERAJI, HIDETOMO NAGAHARA, HIDEAKI MORIHANA, NAOTO NAGANUMA
  • Publication number: 20160341584
    Abstract: A gas flowmeter includes a device body that air-tightly encapsulates a measurement target fluid, an inlet configured to introduce the measurement target fluid into the device body, an outlet configured to exhaust the measurement target fluid from the device body, and a connector that is connected with the outlet. The gas flowmeter further includes a flow rate measuring part of an ultrasonic type that is connected with the connector and calculates a flow rate of the measurement target fluid flowing inside, and a flow path member that is connected with the connector and has a flow path shape identical with that of the flow rate measuring part. The flow rate measuring part and the flow path member are connected with the connector in a vertical direction in such a manner that a side of inflow ports through which the measurement target fluid flows in faces downward.
    Type: Application
    Filed: January 22, 2015
    Publication date: November 24, 2016
    Inventors: Naoto NAGANUMA, Masato SATOU, Masanobu TERAJI, Hidetomo NAGAHARA, Hideaki MORIHANA
  • Publication number: 20160320218
    Abstract: A gas flowmeter includes: device body (1) which accommodates a fluid to be measured; inlet pipe (4) through which the fluid to be measured flows into device body (1); and outlet pipe (5) through which the fluid to be measured flows out from device body (1) through connecting pipe (7). The gas flow meter also includes: ultrasonic flow rate measuring unit (9) which has a first end side connected to outlet pipe (5) and performs flow rate measurement of the fluid to be measured which flows in ultrasonic flow rate measuring unit (9); and connecting pipe (7) which is disposed between ultrasonic flow rate measuring unit (9) and outlet pipe (5), and is connected to outlet pipe (5). The gas flow meter further includes support member (10) which supports a second end side of ultrasonic flow rate measuring unit (9).
    Type: Application
    Filed: January 20, 2015
    Publication date: November 3, 2016
    Applicant: Panasonic Intellectual Property Management Co. Ltd
    Inventors: HIDEAKI MORIHANA, MASATO SATOU, HIDETOMO NAGAHARA, MASANOBU TERAJI, NAOTO NAGANUMA
  • Publication number: 20130306893
    Abstract: A shutoff valve according to the present invention includes: a motor configured to cause a rotating shaft to rotate; a lead screw formed on the rotating shaft; a lead nut into which the lead screw is screwed; and a valve element configured to block a passage, the valve element being configured to move in an axial direction in accordance with rotation of the rotating shaft. A dry lubricating coating is formed on a contact surface where the lead screw and the lead nut come into contact with each other. A thread pitch of the lead screw is set such that a current applied to the motor, the current being in relation to an inductance of the motor, is in a range that does not cause explosion of the fuel gas and that allows thrust force necessary for moving the valve element to be obtained.
    Type: Application
    Filed: January 19, 2012
    Publication date: November 21, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Naoto Naganuma, Yuji Nakabayashi, Hideaki Morihana, Masaki Sugiyama, Hiroshi Nakai, Akihisa Adachi
  • Publication number: 20130255786
    Abstract: A flow control valve includes a light emitting section for emitting light; a light receiving section disposed so as to face the light emitting section, for detecting the amount of light received from the light emitting section; and a valve element for opening and closing a passage, wherein the valve element or a light blocking section secured to the valve element moves in a transverse direction between the light emitting section and the light receiving section as the passage is opened or closed, an amount of light received by the light receiving section from the light emitting section varies in accordance with the position of the valve element, and a position of the valve element is detected based on the amount of light received by the light receiving section.
    Type: Application
    Filed: December 13, 2011
    Publication date: October 3, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Hiroshi Nakai, Hideaki Morihana, Naoto Naganuma, Fumikazu Shiba, Masaki Sugiyama
  • Patent number: 8176936
    Abstract: By removably disposing a fluid cutoff device in a gas piping, a gas cutoff management function for remote cutting-off/return, etc., can be added to an existing flow measuring unit, and a communicating portion can make bidirectional communications, so that by transmitting an acceptance state of a remote operation from the external device to the external device, higher reliability and safety can be realized, and by detecting use with the fluid cutoff device removed, safety can be further improved while unauthorized use is prevented.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: May 15, 2012
    Assignee: Panasonic Corporation
    Inventors: Naoto Naganuma, Masaki Yamaguchi, Takehiko Shigeoka
  • Publication number: 20120085947
    Abstract: It is an object of the present invention to provide a shutoff valve unit which can be easily attached to a gas meter whose casing is formed with a press worked thin plate and has a resistance to foreign materials or water in a piping or a tamper. An inlet pipe 51, a speed reducing chamber 52 arranged in a lower part of the inlet pipe and having a flow passage sectional area larger than a flow passage sectional area of the inlet pipe 51, a transverse passage 53 opened substantially in a horizontal direction from a side surface at a position higher than a bottom surface 52a and a valve chamber 56 having a valve seat hole 54 opened downward to a gas introducing chamber 46 in the gas meter are integrally formed with a synthetic resin, and a shutoff valve 81 is provided which has a valve disk 82 for opening and closing the valve seat hole 54 and incorporates an air-tight structure in a main body to form a shutoff valve unit.
    Type: Application
    Filed: June 3, 2010
    Publication date: April 12, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Masaki Yamaguchi, Naoto Naganuma
  • Publication number: 20100102258
    Abstract: By removably disposing a fluid cutoff device in a gas piping, a gas cutoff management function for remote cutting-off/return, etc., can be added to an existing flow measuring unit, and a communicating portion can make bidirectional communications, so that by transmitting an acceptance state of a remote operation from the external device to the external device, higher reliability and safety can be realized, and by detecting use with the fluid cutoff device removed, safety can be further improved while unauthorized use is prevented.
    Type: Application
    Filed: March 2, 2009
    Publication date: April 29, 2010
    Inventors: Naoto Naganuma, Masaki Yamaguchi, Takehiko Shigeoka
  • Patent number: 6619613
    Abstract: Gas flow control apparatus that includes a gas flow control unit having a gas flow adjusting capability and a gas closing capability of selectively opening and closing a gas. A stepping motor is used for driving the gas flow control unit. A drive control unit is provided for controlling the stepping motor. The gas flow control unit is capable of adjusting the gas flow in multiple stages by selectively opening and closing one of a plurality of gas flow adjusting holes and also capable of varying the gas flow in multiple stages by selectively opening and closing one of the plural gas flow adjusting holes according to a number of pulses of the stepping motor.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: September 16, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshio Akamatsu, Naoto Naganuma, Mitsumasa Matsumura, Yoshiteru Kagomoto, Hiroyuki Senda, Mitsuo Yokohata, Kazuyoshi Hatano, Tadashi Yanagisawa, Kouichi Murakami
  • Patent number: 4477487
    Abstract: An oxygen concentration cell having a high peeling resistance of the electrode and an excellent response property can be obtained by a method wherein electrode-adhering particles, which consist essentially of a specifically limited amount of stabilized or partially stabilized zirconia granulated particles having a spherical shape and a particle size of not smaller than 44 .mu.m and a specifically limited amount of stabilized or partially stabilized zirconia fine particles having a particle size of not larger than 10 .mu.m as a sintering aid, are applied and adhered to the surface of a matrix consisting of stabilized or partially stabilized zirconia, the resulting assembly is sintered to form monolithically a large number of convex portions on the matrix surface, an electrode is adhered to the matrix surface having the convex portions monolithically formed thereon, and further a heat-resistant ceramic protecting film is adhered to the electrode film.
    Type: Grant
    Filed: February 25, 1983
    Date of Patent: October 16, 1984
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Takao Kojima, Naoto Naganuma