Patents Assigned to Nitta Corporation
  • Patent number: 7391411
    Abstract: A capacitance type sensor includes a substrate, a group of electrodes fixed on an upper face of the substrate, a movable electrode plate having an electrode on its lower side and a gap between the group of fixed electrodes on the substrate and the electrode on the movable electrode plate. The gap is formed with a solder layer, a conductive elastomer layer, a conductive paint layer, or a conductive adhesive material layer provided on the substrate. The electrode on the movable electrode plate is made of conductive rubber plate or conductive elastomer plate.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: June 24, 2008
    Assignees: Nitta Corporation, Wacoh Corporaton
    Inventors: Hideo Morimoto, Kazuhiro Okada
  • Publication number: 20080117017
    Abstract: A plate member 101 having flexible portions; plate members 102 to 104 having openings corresponding to the flexible portions of the plate member 101; a plate member 201 having flexible portions; and plate members 202 to 204 having openings corresponding to the flexible portions of the plate member 201 are formed by etching. The plate members 101 to 104 and 201 to 204 are bonded by diffusion bonding process to make first and second flanges 100 and 200. Interconnecting shafts are formed by cutting. The first and second flanges 100 and 200 and the interconnecting shafts are bonded by diffusion bonding process to make a strain generation unit 5. Strain gauges are attached to the lower face of the strain generation unit 5. A stain gauge type sensor 1 is thus made.
    Type: Application
    Filed: November 13, 2007
    Publication date: May 22, 2008
    Applicant: NITTA CORPORATION
    Inventor: Hideo Morimoto
  • Patent number: 7372281
    Abstract: A displacement electrode cooperates with four switch electrodes on a substrate to form respective switches SW1 to SW4. When all of the switches SW1 to SW4 are on, no X- and Y-axial outputs are activated and only a Z-axial output is activated. On the other hand, when at least one of the switches SW1 to SW4 is off, no Z-axial output is activated and only X- and Y-axial outputs are activated.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: May 13, 2008
    Assignee: Nitta Corporation
    Inventor: Hideo Morimoto
  • Patent number: 7360456
    Abstract: A sensor strain causer can be made into a simple shape, and the attachment work for strain gauges is made easy. In a multiaxial sensor 1 for measuring one or more of multiaxial force, moment, acceleration, and angular acceleration, externally applied, a plurality of strain gauges R11 to R48 disposed on one plane are provided. Thereby, because the time for the attachment work for the strain gauges R11 to R48 can be shortened, the mass productivity can be improved and the cost can be reduced.
    Type: Grant
    Filed: June 16, 2004
    Date of Patent: April 22, 2008
    Assignee: Nitta Corporation
    Inventor: Hideo Morimoto
  • Publication number: 20080084259
    Abstract: A thin, light and soft electromagnetic wave absorber is disclosed exhibiting an excellent workability. The first conductor element group of a first conductor element layer consists of aligned cross conductor elements and square conductor elements in regions surrounded by cross conductor elements. A radio wave incident from the first conductor element layer side is received by each element, internally subjected to multiple reflection and then absorbed by a first loss material layer. Since the first conductor element group is realized by the cross conductor elements and the square conductor elements, receiving effect is enhanced and the radio wave can be collected with a high collection efficiency.
    Type: Application
    Filed: March 1, 2004
    Publication date: April 10, 2008
    Applicant: NITTA CORPORATION
    Inventors: Takahiko Yoshida, Haruhide Go, Yoshiharu Kiyohara, Shinichi Sato, Makoto Maezawa, Mamoru Maenaka
  • Publication number: 20080047364
    Abstract: In a touch sensor, one ends of optical fibers are disposed at positions corresponding to respective pressure sensing points on a sensor sheet. The optical fibers in a bundled form are connected in a detection unit. The detection unit includes therein a camera that takes an image showing a change in luminance at the other ends of the optical fibers. A transmissive body is disposed to contain the other ends of the optical fibers and light sources. Upper and side faces of the transmissive body are covered with antireflection members. The transmissive body has substantially the same refractive index as the core of each optical fiber. A force applied to the sensor sheet is detected based on the change in luminance at the other ends of the optical fibers shown in the image taken by the camera.
    Type: Application
    Filed: July 27, 2007
    Publication date: February 28, 2008
    Applicant: NITTA CORPORATION
    Inventors: Takashi Yoshida, Hiroyuki Kajimoto
  • Publication number: 20080018347
    Abstract: In a capacitance type sensor, capacitive elements are formed between a displacement electrode 104 and capacitance electrodes E1 and E2. When an external force is applied, the displacement electrode 104 is displaced to come into contact with a switch electrode E3 or E4 kept at a ground potential. The displacement electrode 104 is further displaced with being in contact with the switch electrode E3 or E4. When the displacement of the displacement electrode 104 changes the distances from the capacitance electrodes E1 and E2, the capacitance values of the capacitive elements change. Based on the changes, the force is detected.
    Type: Application
    Filed: July 5, 2007
    Publication date: January 24, 2008
    Applicant: NITTA CORPORATION
    Inventor: Hideo Morimoto
  • Patent number: 7292017
    Abstract: Switching elements M1, M2, M3 are connected in series between the positive and negative lines carrying DC current supplied through a rectifier circuit 2 from an AC power supply 1 or directly supplied from a DC power source. The switching elements M1, M2, M3 are on/off controlled by a high-frequency signal. An inductor L1 and a capacitor C1 are inserted between a connection node a and a load terminal c. An inductor L2 and a capacitor C2 are inserted between a connection node b and a load terminal d. The phases of on/off of the switching elements M1, M3 are the same, and the phase of on/off of the switching element M2 is opposite to them. Without using any transformer, not only insulation against DC but insulation against AC is adequately ensured.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: November 6, 2007
    Assignee: Nitta Corporation
    Inventor: Guo-Hua Wang
  • Patent number: 7255011
    Abstract: Switches SW1 to SW4 and variable resistors are formed so as to overlap each other at positions corresponding to the X-axial positive direction, the X-axial negative direction, the Y-axial positive direction, and the Y-axial negative direction, respectively. When at least one of the switches SW1 to SW4 is off, no Z-axial output is activated and only X- and Y-axial outputs are activated. On the other hand, when any of the switches SW1 to SW4 is on, no X- and Y-axial outputs are activated and only a Z-axial output is activated.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: August 14, 2007
    Assignee: Nitta Corporation
    Inventor: Hideo Morimoto
  • Publication number: 20070089536
    Abstract: A strain gauge type sensor and a strain gauge type sensor unit using the sensor are improved in sensitivity. In a strain gauge type sensor 1 for measuring at least one of multiaxial force, moment, acceleration, and angular acceleration, externally applied, diaphragms 15 and 16 different in thickness are formed at inner and outer edges of a substantially disk-shaped interconnecting portion 13 interconnecting a vicinity of an upper end of a force receiving portion 11 and a fixed portion 12 disposed around the force receiving portion 11. The thicknesses of the diaphragms 15 and 16 are determined such that strains at intersections of a straight line extending through an origin O with the diaphragms 15 and 16 are equal to each other. Strain gauges are disposed at the intersections of the straight line extending through the origin O with the diaphragms 15 and 16.
    Type: Application
    Filed: June 21, 2004
    Publication date: April 26, 2007
    Applicant: NITTA CORPORATION
    Inventor: Hideo Morimoto
  • Patent number: 7174793
    Abstract: In a sensor sheet of the present invention, a large number of sensor cells, each having capacitance element electrodes corresponding to an X-axis direction, a Y-axis direction and a Z-axis direction and a displacement electrode arranged to form capacitance elements between the capacitance element electrodes and the displacement electrode, are arranged in matrix. This arrangement enables measurement of a distribution of three-dimensional components of the force applied from outside over the overall sensor sheet on the basis of the components of force detected in each of the large number of sensor cells.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: February 13, 2007
    Assignee: Nitta Corporation
    Inventor: Hideo Morimoto
  • Publication number: 20070000335
    Abstract: The power consumption is reduced, wiring is simplified, and the cost is reduced. A multiaxial sensor unit 10 for measuring one or more of multiaxial force, moment, acceleration, and angular acceleration, externally applied, includes eight strain gauges R11 to R24 disposed on a single plane, and one bridge circuit 11 constructed by connecting the strain gauges R11 to R24. Thereby, bridge circuits 11 and strain gauges R11 to R24 are reduced in comparison with a prior art to reduce the power consumption, simplify wiring, and reduce the manufacturing cost.
    Type: Application
    Filed: June 21, 2004
    Publication date: January 4, 2007
    Applicant: Nitta Corporation
    Inventor: Hideo Morimoto
  • Publication number: 20060278013
    Abstract: Switches SW1 to SW4 and variable resistors are formed so as to overlap each other at positions corresponding to the X-axial positive direction, the X-axial negative direction, the Y-axial positive direction, and the Y-axial negative direction, respectively. When at least one of the switches SW1 to SW4 is off, no Z-axial output is activated and only X- and Y-axial outputs are activated. On the other hand, when any of the switches SW1 to SW4 is on, no X- and Y-axial outputs are activated and only a Z-axial output is activated.
    Type: Application
    Filed: May 18, 2006
    Publication date: December 14, 2006
    Applicant: Nitta Corporation
    Inventor: Hideo Morimoto
  • Publication number: 20060267598
    Abstract: A displacement electrode cooperates with four switch electrodes on a substrate to form respective switches SW1 to SW4. When all of the switches SW1 to SW4 are on, no X- and Y-axial outputs are activated and only a Z-axial output is activated. On the other hand, when at least one of the switches SW1 to SW4 is off, no Z-axial output is activated and only X- and Y-axial outputs are activated.
    Type: Application
    Filed: May 18, 2006
    Publication date: November 30, 2006
    Applicant: Nitta Corporation
    Inventor: Hideo Morimoto
  • Publication number: 20060237289
    Abstract: A flat belt is used for conveying an object on a surface of the flat belt. The flat belt has a tension member and fabric. The tension member is resistant to load in a longitudinal direction of the flat belt. The fabric is disposed on at least one of an inner side and an outer side of the tension member. And, the fabric is stretchable in the longitudinal direction.
    Type: Application
    Filed: April 26, 2005
    Publication date: October 26, 2006
    Applicant: NITTA CORPORATION
    Inventors: Tatsuya Nozaki, Seiichi Kitamura, Yoshiro Tamaki
  • Publication number: 20060234820
    Abstract: A flat belt has a longitudinal reinforcement fabric to reinforce the flat belt along the longitudinal direction. A first thermoplastic resin layer is laminated on an upper side of the longitudinal reinforcement fabric. A second thermoplastic resin layer is laminated on a lower side of the longitudinal reinforcement fabric. A first lateral reinforcement fabric is laminated on an upper side of the first thermoplastic resin layer to reinforce the flat belt along the lateral direction. A second lateral reinforcement fabric is laminated on a lower side of the second thermoplastic resin layer to reinforce the flat belt along the lateral direction. A first friction layer is provided above an upper side of the first lateral reinforcement fabric, and is formed with a conveyor surface for conveying a subject.
    Type: Application
    Filed: March 31, 2006
    Publication date: October 19, 2006
    Applicant: NITTA CORPORATION
    Inventors: Takashi Yamamoto, Tatsuya Nozaki
  • Patent number: 7119552
    Abstract: Capacitance element electrodes (E1 to E5) and a grounded reference electrode (E0) are formed on a substrate (20). A displacement electrode (40) that is Z-axially displaced in accordance with a Z-axial movement of a detective member (30) externally operated, is disposed so as to be opposed to the above electrodes (E0 to E5). The displacement electrode (40) cooperates with the reference electrode (E0) and the capacitance element electrodes (E1 to E5) to form capacitance elements (C0 to C5), respectively. Each of the capacitance elements (C1 to C5) is connected to the capacitance element (C0) in series in relation to an externally input signal. Changes in the capacitance values of the capacitance elements (C1 to C5) when the detective member (30) is moved, is detected by a signal processing circuit having hysteretic characteristics. Thereby, the displacement of the detective member (30) is detected.
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: October 10, 2006
    Assignee: Nitta Corporation
    Inventors: Hideo Morimoto, Tomohiro Agaya
  • Patent number: 7112755
    Abstract: The pressure sensitive sensor includes a sheet base, an application-side and a receiving-side electrode provided on the sheet base and conducting coatings provided on the electrodes. The conductive electrodes have pressure-sensitive conductive ink containing conductive carbon black. Resistance between the application-side electrode and the receiving-side electrode changes by a contact area between the conductive coatings on the electrodes. The pressure-sensitive conductive ink has an enhanced strength as a resin and an enhanced effect of dispersion of the conductive carbon black by adding 30 to 70 parts by weight of silicon dioxide to 100 parts by weight of silicone elastomer component as a binder. The pressure-sensitive sensor has output stability and linearity at temperatures in a wide range from ?40° C. to 85° C.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: September 26, 2006
    Assignee: Nitta Corporation
    Inventors: Mitsumasa Kitano, Tsutomu Ueda
  • Publication number: 20060174718
    Abstract: A sensor strain causer can be made into a simple shape, and the attachment work for strain gauges is made easy. In a multiaxial sensor 1 for measuring one or more of multiaxial force, moment, acceleration, and angular acceleration, externally applied, a plurality of strain gauges R11 to R48 disposed on one plane are provided. Thereby, because the time for the attachment work for the strain gauges R11 to R48 can be shortened, the mass productivity can be improved and the cost can be reduced.
    Type: Application
    Filed: June 16, 2004
    Publication date: August 10, 2006
    Applicant: Nitta Corporation
    Inventor: Hideo Morimoto
  • Patent number: 7064561
    Abstract: In a resistance type sensor of the present invention, a sensor unit having variable contact resistances and a wakeup switch formed in two layers is produced by folding a FPC forming thereon pressure-sensitive resistive inks, a displacement electrode connected to ground, and a displacement electrode held at a power-supply voltage Vcc. Accordingly, whenever operation is applied to an operating button, the displacement electrode and the displacement electrode are reliably contacted with each other, first, and, then, resistance values of the variable contact resistances are changed while the displacement electrodes are kept in their contacted state. This enables the operation applied to the operating button to be detected reliably.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: June 20, 2006
    Assignee: Nitta Corporation
    Inventor: Hideo Morimoto