Patents Assigned to Seiko Precision Inc.
  • Patent number: 8553309
    Abstract: A blade speed adjustable mechanism includes: a board having an opening; a shutter blade opening or closing the opening; a drive lever supported by the board and bringing the shutter blade into an overlapped operation or an expanded operation; a biasing member engaging the drive lever and biasing the shutter blade in an overlapped direction or in an expanded direction; a ratchet member engaging the biasing member and having ratchet teeth; an engagement member holding the ratchet member at a desired stop position and adjusting an biasing force of the biasing member by changing the stop position. The engagement member has a plurality of pawl portions different from each other in length. The pawl portion engages the ratchet tooth to hold the ratchet member at the stop position. A difference in length between the pawl portions is shorter than a distance corresponding to a pitch of the ratchet teeth.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: October 8, 2013
    Assignee: Seiko Precision Inc.
    Inventors: Yoichi Nakano, Hiroshi Takahashi
  • Patent number: 8540439
    Abstract: A blade drive device includes: a blade; a drive source that drives the blade; and a chassis that has an opening opened and closed by the blade and that houses the blade and the drive source. The drive source includes: a rotor that is rotatably supported; a stator around which a coil for excitation is wound and which applies a rotational force to the rotor. The stator is arranged to surround a periphery of the opening and has a rectangular shape.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: September 24, 2013
    Assignee: Seiko Precision Inc.
    Inventors: Koichi Masuzawa, Kenichi Kudo
  • Publication number: 20130215162
    Abstract: A time recorder includes a first sensor that detects the side edge of a time card having a cut-out formed at at least one corner of the bottom, a second sensor that detects the bottom of the time card, and a card feeding unit that feeds the time card. When the time card is fed by this card feeding unit, a pulse counter of the card feeding unit counts the number of pulses of predetermined pulse signals after the first sensor detects the time card and until the second sensor detects the time card. Next, the front and back faces of the time card are determined based on the number of pulses that is a counting result. Hence, the front and back faces can be determined by the first sensor and the second sensor only.
    Type: Application
    Filed: October 12, 2011
    Publication date: August 22, 2013
    Applicant: Seiko Precision Inc.
    Inventors: Katsuhisa Gokita, Ryuji Okuyama
  • Patent number: 8511916
    Abstract: A blade driving device includes: a board including an opening; a blade movable between a position receding from the opening and a position overlapping at least a part of the opening; and a buffering member having a loop shape, having an elasticity, abutting the blade at an end of a movable range of the blade, and being deformable such that the loop shape is warped when abutting against the blade.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: August 20, 2013
    Assignee: Seiko Precision Inc.
    Inventors: Hiroshi Takahashi, Seiichi Oishi
  • Patent number: 8485742
    Abstract: A focal plane shutter includes: a board including an opening; blades capable of opening and closing the opening; a drive lever swingably supported, holding a movable iron piece and driving the blades; a self-holding type solenoid capable of adsorbing to the movable iron piece by a given attraction force in a non-energized state, and reducing the given attraction force in an energized state; a biasing member biasing the drive lever to move the drive lever away from the self-holding type solenoid; and a set member moving the drive lever to abut the drive lever with the self-holding type solenoid, wherein the self-holding type solenoid is energized to reduce the given attraction force when the drive lever is swung by the set member to abut the movable iron piece with the self-holding type solenoid.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: July 16, 2013
    Assignee: Seiko Precision Inc.
    Inventors: Yoichi Nakano, Makoto Mikami, Chiaki Nemoto
  • Publication number: 20130167346
    Abstract: The X-ray processing device comprises a work table on which a processing object is placed, X-ray processors irradiating the processing object placed in a given processing zone on the work table with an X-ray for processing, a pressing member, and X-ray shielding sheets. The pressing member presses and collapses any remaining raised edges at the sides of the processing object. The X-ray shielding sheets are provided on the side of the pressing member that is closest to the processing zone and shield the X-ray from the X-ray processors.
    Type: Application
    Filed: December 27, 2012
    Publication date: July 4, 2013
    Applicant: SEIKO PRECISION INC.
    Inventor: SEIKO PRECISION INC.
  • Patent number: 8465217
    Abstract: A focal-plane shutter includes: a board including an opening; a leading blade and a trailing blade; a trailing blade lever; a first lever; a second lever; a self-holding type solenoid; a leading blade electromagnet and a trailing blade electromagnet; and a set lever.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: June 18, 2013
    Assignee: Seiko Precision Inc.
    Inventors: Yoichi Nakano, Hideki Tanaka
  • Patent number: 8449206
    Abstract: A focal plane shutter includes: a board including an opening; a drive lever swingably supported by the board, biased from a start end to a terminal end of a swingable range by a drive spring, and driving blades opening and closing the opening; and a set member rotating in a first direction to position the drive lever at the start end, and then rotating in a second direction.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: May 28, 2013
    Assignee: Seiko Precision Inc.
    Inventors: Hiroshi Takahashi, Seiichi Oishi
  • Patent number: 8419298
    Abstract: A drive mechanism includes: an actuator including a rotor magnetized; a magnetic body, a magnetically attractive force being generated between the magnetic body and the rotor; and a sandwiched member sandwiched between the rotor and the magnetic body. At least one of the magnetic body and the sandwiched member is coupled to the rotor, and the magnetic body and the sandwiched member slidably contact each other.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: April 16, 2013
    Assignee: Seiko Precision Inc.
    Inventors: Hisashi Kawamoto, Yutaka Asai
  • Publication number: 20130084060
    Abstract: A focal plane shutter includes: first, second, and third boards respectively including openings through which light enters an image pickup element from an object side, and arranged in this order from the object side toward the image pickup element side; a blade arranged between the first and second boards and capable of opening and closing the openings; and a holding member arranged between the second and third boards, not coupled to the blade, and holding the second board from the image pickup element side.
    Type: Application
    Filed: August 15, 2012
    Publication date: April 4, 2013
    Applicant: SEIKO PRECISION INC.,
    Inventors: Shoichi Tokura, Hiroshi Takahashi, Seiichi Oishi, Kazuya Shioda
  • Publication number: 20130069296
    Abstract: A printed substrate holding device includes: a base member including a recess portion including: a bottom portion; and a side wall portion provided in the bottom portion; and a printed substrate held in the recess portion and having a rigidity, wherein the side wall portion includes a holding portion holding a first surface of the printed substrate, the bottom portion includes a supporting portion supporting a second surface of the printed substrate, the printed substrate slides on the bottom portion and is inserted between the supporting portion and the holding portion, and is held in the recess portion, and the printed substrate is held in the recess portion while being bent.
    Type: Application
    Filed: November 13, 2012
    Publication date: March 21, 2013
    Applicant: SEIKO PRECISION INC.
    Inventor: SEIKO PRECISION INC.
  • Patent number: 8385156
    Abstract: A start date and an end date of a daylight saving time input by a user is stored in the daylight saving time information storage unit (41). The radio-controlled adjustment section (20) generates a time to adjust the time which the clocking unit (10) is clocking, by daylight saving time information and a standard time received via an antenna (AT) and a reception circuit (21), and adjusts the time of the clocking unit (10) by use of the generated time. Here, the daylight saving time determination unit (42) references to the daylight saving time period stored in the daylight saving time information storage unit (41), and adjusts the time of the clocking unit (10) so that the time becomes one which corresponds to the user-set daylight saving time.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: February 26, 2013
    Assignee: Seiko Precision Inc.
    Inventor: Kenji Ozawa
  • Patent number: 8376636
    Abstract: A focal plane shutter includes: an electromagnet; a board including an opening; blades capable of opening and closing the opening; a drive member holding an iron piece adsorbed to the electromagnet and driving the blades, the drive member being movable such that the iron piece moves toward and away from the electromagnet and being biased by a spring such that the iron piece moves away from the electromagnet; and a holding board facing the board and including a pair of sandwiching portions elastically deformable and holding and sandwiching the electromagnet. The electromagnet includes a restriction portion engaging the board and restricting a movement of the electromagnet in a direction where the iron piece moves away from the electromagnet.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: February 19, 2013
    Assignee: Seiko Precision Inc.
    Inventors: Hiroshi Takahashi, Yoichi Nakano
  • Patent number: 8376635
    Abstract: A focal plane shutter includes: a board including an opening; blades capable of opening and closing the opening; a drive member movable between a start position and a terminal position, biased toward the terminal position, and driving the blades; a brake member supported to abut and move away from the drive member positioned at the terminal position, and biased to abut the drive member positioned at the terminal position; and a set member rotatable in only one direction, and moving the drive member from the terminal position to the start position; wherein the set member includes a drive portion abutting the brake member to move the brake member away from the drive member and then abutting the drive member to move the drive member toward the start position.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: February 19, 2013
    Assignee: Seiko Precision Inc.
    Inventors: Hiroshi Takahashi, Yoichi Nakano
  • Publication number: 20130039641
    Abstract: An aperture device includes: a board including an opening; a step motor capable of stopping every predetermined rotational angle; an output member including first and second pins and rotating a predetermined range by the step motor; and first and second blades driven by the output member with first and second blades respectively engaging with the first and second pins, linearly moving in opposite directions, and covering the opening to adjust an aperture area of the opening; wherein an X-axis indicates a phantom line passing through a rotational center of the output member and extending in the moving directions of the blades, and when the aperture area is a minimum, an angle between a directional line, which connects the rotational center with the first pin, and the X-axis is from minus 20 degrees to plus 30 degrees.
    Type: Application
    Filed: October 19, 2012
    Publication date: February 14, 2013
    Applicant: SEIKO PRECISION INC.
    Inventor: SEIKO PRECISION INC.
  • Patent number: 8366331
    Abstract: A blade driving device includes: a board including an optical path opening; first and second blades moving toward and away from the optical path opening; first and second transmitting portions driving the first and second blades; and first and second drive sources respectively driving the first and second transmitting portions, wherein the first and second transmitting portions respectively include first and second drive pins, and the first blade includes an engagement slot engaging one of the first and second drive pins and is attached to the first and the second transmitting portions to be rotatable about the other of the first and second drive pins.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: February 5, 2013
    Assignee: Seiko Precision Inc.
    Inventors: Phichet Numnual, Takashi Nakano
  • Patent number: 8368989
    Abstract: A light amount adjusting device includes: a board including an opening; a linear moving blade linearly and movably supported by the board; and a swinging blade swingably supported by the board, wherein: the linear moving blade and the swinging blade are receded from the opening to form a fully opened state; the linear moving blade covers the opening to form a fully closed state; and the swinging blade has a small aperture opening with a diameter smaller than a diameter of the opening, and causes the small aperture opening and the opening to be overlapped with each other to form a small aperture state.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: February 5, 2013
    Assignee: Seiko Precision Inc.
    Inventors: Phichet Numnual, Takashi Nakano, Prapas Charoensilputthakun
  • Patent number: 8356949
    Abstract: A focal plane shutter includes: a board including an opening; a blade movable between a position where the blade recedes from the opening and a position where the blade covers at least part of the opening; a drive arm connected to the blade, the drive arm including an engagement hole; a drive lever including a drive pin engaging the engagement hole; and a restriction portion provided in the drive arm, the restriction portion abutting the drive pin and being thicker than the drive arm.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: January 22, 2013
    Assignee: Seiko Precision Inc.
    Inventors: Hiroshi Takahashi, Seiichi Oishi
  • Patent number: 8353635
    Abstract: A blade drive device includes: a board that has an opening; a blade that opens and closes the opening; and a drive source that drives the blade. The drive source includes a rotor rotatably supported and a stator for applying a rotational force to the rotor. The stator, around which a coil for excitation is wound, has a fitting hole fitted with a projective portion formed on the board and has a rectangular shape.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: January 15, 2013
    Assignee: Seiko Precision Inc.
    Inventors: Koichi Masuzawa, Kenichi Kudo
  • Patent number: D681058
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: April 30, 2013
    Assignee: SEIKO Precision Inc.
    Inventors: Masami Yamamoto, Kenichi Kudo