Patents Examined by Darren E. Schuberg
  • Patent number: 7352089
    Abstract: A driving apparatus includes a stepping motor having a lead screw, a rack, and a rack-retaining bar, a barrel, a barrel-retaining bar, and a connecting spring for connecting the rack to the barrel. The connecting spring includes an engaging portion that engages with a spherical output member of the rack. The stepping motor in which the lead screw and the rack are integrated with each other and the barrel are connected to each other with provides a structure that absorbs relative positioning error and backlash.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: April 1, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masao Mizumaki
  • Patent number: 7345399
    Abstract: An electrically commutated motor for a fuel pump having a rotor connected to a shaft and having plastic-bonded ferrite, with a fuel-resistant shaped body formed by the plastic-bonded ferrite, and a magnetic return element adjustable in relation to the shaped body.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: March 18, 2008
    Assignee: Siemens Aktiengesellschaft
    Inventors: Michael Baempfer, Jens Missun, Wolfgang Warnke
  • Patent number: 7342321
    Abstract: A bicycle electric power unit supplies electric power to a bicycle motor unit having a power source, a power source controller, a power source voltage detector, a first power source switch and a second power source switch. The power source controller turns off the first power source switch when the power source voltage detector detects a voltage of a specific value or less. The first power source switch supplies electric power to the power source controller when the power source is on and blocks the electric power to the power source controller when the power source is off. The first power source switch is turned off by the power source controller when the power source is on. The second power source switch is disposed between the power source and the motor unit. The second power source is turned on and off by the power source controller.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: March 11, 2008
    Assignee: Shimano Inc.
    Inventor: Satoshi Kitamura
  • Patent number: 7262545
    Abstract: A piezoelectric actuator 1 capable of being driven with a high electric field intensity, obtaining a larger displacement and being high in electric conducting reliability of electrodes, and comprising: at least one cell 3 defined by two side walls 6, a substrate 2 and a ceiling wall 7; the two side walls being disposed on the substrate and being covered with the ceiling wall to define one cell, at least the two side walls 6 comprising piezoelectric/electrostrictive devices 4, and the piezoelectric/electrostrictive devices 4 being capable of changing a volume of the cell 3 by displacement of the walls. Each of the piezoelectric/electrostrictive devices 4 comprises a plurality of layered piezoelectric/electrostrictive bodies 14 and electrodes 18, 19 which are alternately stacked, and end portions of the electrodes 18, 19 are embedded in the piezoelectric/electrostrictive bodies 14 in at least the internal side of the cell 3.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: August 28, 2007
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukihisa Takeuchi, Koji Kimura, Koichi Iwata
  • Patent number: 7247972
    Abstract: There is disclosed a diaphragm structure that includes: a ceramic substrate 3 in which at least one opening 2 is formed, and a thin diaphragm portion 4 having a shape protruding on a side opposite to the opening 2 and constituted of a ceramic fired integrally with the ceramic substrate 3 in such a manner as to cover the opening 2. An opening shape of the opening 2 is a shape including at least one tip portion 5 in a longitudinal direction, having a curved shape, and a tapered portion 6 whose opening width gradually narrows toward the tip portion 5 and which is constituted of a curve or a straight line, and a portion of the diaphragm portion 4 corresponding to the tapered portion 6 has such a shape that a protruding height gradually lowers toward the tip portion 5.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: July 24, 2007
    Assignee: NGK Insulators, Ltd.
    Inventors: Tsutomu Nanataki, Kunihiko Yoshioka
  • Patent number: 7247973
    Abstract: A moving mechanism using a piezoelectric actuator is attached by an adhesive with adhesive parts of a constant area between a piezoelectric element and a slider and between the piezoelectric element and a suspension. A movable part, serving as the slider, is moved by the piezoelectric actuator. A support part, serving as a gimbal part of a suspension, supports the piezoelectric actuator. At least one of the movable part and the support part is fixed to the piezoelectric element. At least one of the piezoelectric element, the movable part and the support part has a bonding surface that is defined by a level difference.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: July 24, 2007
    Assignee: Fujitsu Limited
    Inventors: Masaharu Hida, Shigeyoshi Umemiya
  • Patent number: 7245064
    Abstract: A piezoelectric/electrostrictive including a pair of mutually opposing vibration plates, each having a first portion and a second portion, a fixation section joined to the first portion of each of the vibration plates, and at least one piezoelectric/electrostrictive element arranged on at least one of the vibration plates. A surface of the device between the fixation section and the second portion of at least one of the vibration plates is curved.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: July 17, 2007
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukihisa Takeuchi, Kazuyoshi Shibata, Masahiko Namerikawa
  • Patent number: 7239049
    Abstract: A moving magnet type linear actuator is provided, which can solve a problem of linear guide life even in case that magnetic attraction force between a magnet and an armature is reduced to perform a high-frequent acceleration and deceleration operation.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: July 3, 2007
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventor: Yasuhiro Miyamoto
  • Patent number: 7230367
    Abstract: A piezoelectric resonator includes a substrate, a lower electrode provided on or above the substrate, a piezoelectric member provided on or above the lower electrode, an upper electrode provided on or above the piezoelectric member, and a cavity provided below a vibration member including the lower electrode, the piezoelectric member, and the upper electrode. In a case where a resonance frequency of vibration with a thickness of the vibration member being a half of a wavelength is taken as fr1, an average of ultrasonic velocity in a material forming the cavity is taken as Vc2, and a value determined based on the resonance frequency fr1 and the average of ultrasonic velocity Vc2 is ?c (=Vc2/fr1), a depth t2 of the cavity is set as, ( 2 ? n - 1 ) × ? ? ? c 4 - ?c 8 ? t2 ? ( 2 ? n - 1 ) × ? ? ? c 4 + ? ? ? c 8 , where n is an arbitrary natural number.
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: June 12, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroshi Yamaguchi, Hiroshi Nakatsuka, Keiji Onishi, Takehiko Yamakawa, Hiroyuki Nakamura
  • Patent number: 7215064
    Abstract: A piezoelectric switch for tunable electronic components comprises piezoelectric layers, metal electrodes alternated with the layers and contact pads. Cross voltages are applied to the electrodes, in order to obtain an S-shaped deformation of the switch and allow contact between the contact pads. Additionally, a further electrode can be provided on a substrate where the switch is fabricated, to allow an additional electrostatic effect during movement of the piezoelectric layers to obtain contact between the contact pads. The overall dimensions of the switch are very small and the required actuation voltage is very low, when compared to existing switches.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: May 8, 2007
    Assignee: HRL Laboratories, LLC
    Inventor: Sarabjit Mehta
  • Patent number: 7199503
    Abstract: In a method and a device according to the present invention, two piezo-elements are driven with two voltages having a phase difference. One of the piezo-elements is charged by an inductive step-up means to a voltage exceeding an available power supply voltage. Subsequently charge, i.e. energy is transferred from the one piezo-element to the other piezo-element by an inductive element. The same inductive element is used in an inductive step-up means and in the transfer of the charge between the two piezo-elements.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: April 3, 2007
    Assignee: Nokis Corporation
    Inventor: Mikko Ollila
  • Patent number: 7105987
    Abstract: The piezoelectric motor (6) comprises a stator (1) and a runner (4) which form a gap (7) as well as comprising a piezoelectric transducer (3) which is connected to the stator (1) or the runner (4) and which with the stator (1) or the runner (4) forms a resonator (1,3;4,3), wherein the resonator (1,3; 4,3) may be excited in a main oscillation direction (H), characterised in that the stator (1) comprises an engagement surface (1a) facing the runner (4), or the runner (4) an engagement surface which faces the stator (1), and that the stator (1) or the runner (4) comprises an elastic advance element (5) which bridges the gap (7) between the stator (1) and the runner (4) in a manner such that the advance element (5) at least temporarily lies on the engagement surface (1a). The advance element (5) comprises a first part-section (5c) as well as a second part-section (5d), wherein the part-sections (5c, 5d) have a different resonant frequency.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: September 12, 2006
    Assignee: Miniswys S.A.
    Inventor: Bonny Witteveen
  • Patent number: 7045921
    Abstract: A small-sized motor of a structure not requiring any metal holder frame in a surface mounting process to a printed circuit board by reflow soldering, wherein the motor case is provided with a level flat part, a pair of left and right first side parts bent downward from this substantially perpendicularly and parallel to each other, a pair of left and right second side parts bent inward from these at an inclination of about 45°, and a pair of left and right third side parts bent down from these and parallel to each other, and a level bottom part connecting these bottom ends and extending substantially parallel to the level flat part.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: May 16, 2006
    Assignees: Sanyo Seimitsu K.K., Sanyo Electric Co.
    Inventors: Takahiro Takagi, Yuuki Yamada
  • Patent number: 7015624
    Abstract: An electroactive device comprises at least two layers of material, wherein at least one layer is an electroactive material and wherein at least one layer is of non-uniform thickness. The device can be produced in various sizes, ranging from large structural actuators to microscale or nanoscale devices. The applied voltage to the device in combination with the non-uniform thickness of at least one of the layers (electroactive and/or non-electroactive) controls the contour of the actuated device. The effective electric field is a mathematical function of the local layer thickness. Therefore, the local strain and the local bending/torsion curvature are also a mathematical function of the local thickness. Hence the thinnest portion of the actuator offers the largest bending and/or torsion response. Tailoring of the layer thicknesses can enable complex motions to be achieved.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: March 21, 2006
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Ji Su, Joycelyn S. Harrison
  • Patent number: 6166842
    Abstract: A scanning and image forming lens system in an optical scanning apparatus optical scans a surface to be scanned by deflecting a luminous flux emitted from a light source in a direction corresponding to a main scanning direction via an optical deflector at equiangular velocity. The scanning image forming lens system transmits the luminous flux deflected by the optical deflector so as to condense the luminous flux into an optical beam spot on the surface to be scanned and to scan the surface to be scanned with the optical beam spot. The scanning image forming lens system includes one or more image forming optical elements including at least one lens. At least one lens surface of the at least one lens of the scanning image forming lens system has a non-arc shape in a sub scanning cross section.
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: December 26, 2000
    Assignee: Ricoh Company, Ltd.
    Inventors: Magane Aoki, Kohji Sakai
  • Patent number: 6149287
    Abstract: A mirror assembly security system for a vehicle includes an exterior mirror assembly and a light module removably positioned within the exterior mirror housing. The light module is moisture impervious and includes an enclosure, a light-emitting opening in the enclosure, a light source in the enclosure radiating light through the light-emitting opening, and a cover for the light-emitting opening adapted to direct the light from the light source to an area adjacent the vehicle to create a security area. The light source may be supported by a pair of electrical contacts provided on the inner surface of the enclosure. The enclosure wall supporting the electrical contacts is preferably flexible, in order to allow the light source to be captured by the contacts. Attachment of the cover adds rigidity to the enclosure to prevent further flexure of the enclosure wall in order to firmly retain the light source.
    Type: Grant
    Filed: October 19, 1998
    Date of Patent: November 21, 2000
    Assignee: Donnelly Corporation
    Inventors: Todd W. Pastrick, Mark R. Litke, David K. Willmore, Rick Mousseau
  • Patent number: 6141123
    Abstract: There is provided a hologram with excellent heat resistance. The hologram comprises a hologram film (10) in which a diffraction grating has been recorded, a substrate (11) situated on one side of the hologram film (10) via a bonding material (13), and a polymer film (12) situated on the other side of the hologram film (10) via a bonding material (13), wherein the thickness of the polymer film (12) is no greater than 100 .mu.m. Otherwise, the polymer film (12) is subjected to prior heat treatment. There is further provided a production process for holograms with minimal appearance defects.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: October 31, 2000
    Assignee: Denso Corporation
    Inventors: Fuminori Nakashima, Naoyuki Kawazoe, Shoichiro Emmei, Yasuhiro Mizutani, Hidekazu Hattori, Satoru Kadowaki, Kazutaka Suzuki
  • Patent number: 6137602
    Abstract: In an optical system used for observing a virtual image, in which a Lippman volumetric hologram is used as a reflection type holographic optical element, the generation of aberration needs to be minimized to enable an optimum virtual image to be viewed. To this end, at least one optical element and the Lippman volumetric hologram 10 are provided for cooperating to form a virtual image of the display image on an image display device 6. The Lippman volumetric hologram 10 is contoured so that its curvature is in the same direction as the curvature of interference fringes operating for generating a refractive power in this Lippman volumetric hologram 10.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: October 24, 2000
    Assignee: Sony Corporation
    Inventor: Hiroshi Mukawa
  • Patent number: 6137931
    Abstract: The present invention provides a method for determining a condition of aging for an optical fiber grating. This method comprises a step of setting the aged deterioration curve of the optical fiber grating as a form proportional to t.sup.-n, where t represents time, and n represents a parameter dependent on temperature; and a step of determining the condition of the aging according to the aged deterioration curve.
    Type: Grant
    Filed: May 1, 1998
    Date of Patent: October 24, 2000
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Shinji Ishikawa, Toru Iwashima, Michiko Harumoto, Akira Inoue
  • Patent number: 6137601
    Abstract: A holographic grating is written into a photorefractive erasable holographic member and a light beam having a first wavelength which includes the joint power spectrum of a pair of joint images to be correlated is directed at the photorefractive member to partially erase the grating. A phase conjugate signal from the partially erased grating is then readout and Fourier transformed to produce the correlation output spots.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: October 24, 2000
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Jehad Khoury, Charles Woods