Patents by Inventor Katumi Terada

Katumi Terada 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).

  • Rear projection display device
    Patent number: 5848829
    Abstract: The present invention is directed to a rear projection display device so adapted as to receive a projected image from a light valve for image formation on the rear surface of a screen and emit image light toward an observer positioned on the front side of the screen, wherein the screen is formed in the shape of a concavely curved surface with respect to the observer, so that the observer can feel as if he or she was present more intensely.
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: December 15, 1998
    Assignee: Sanyo Electric Co. Ltd.
    Inventors: Katumi Terada, Daisuke Takemori, Hideyuki Kanayama
  • Photographing data indicator for a single lens reflex camera
    Patent number: 4429979
    Abstract: A photographing data indicator for a single lens reflex camera comprises a first drive electrode having a through opening formed therein, the configuration of which represents photographing data, and a second drive electrode having a solid configuration representing photographing data and disposed inside the through opening formed in the first drive electrode. Both the first and the second drive electrodes are disposed on a liquid crystal display panel which is in turn disposed within a viewfinder of the camera.
    Type: Grant
    Filed: February 5, 1982
    Date of Patent: February 7, 1984
    Assignee: Olympus Optical Company
    Inventor: Katumi Terada
  • Shutter drive safety device for a camera
    Patent number: 4420235
    Abstract: A safety device is provided for a shutter drive mechanism for camera in which a shutter opening member and a shutter closing member are independently operable, with an exposure period controlled by a time interval between times of initiation of operation of the both members. The safety device includes a constraining member which locks a detent member which controls the operation of the shutter closing member in response to a film winding operation and which unlocks the detent member in response to a shutter release operation.
    Type: Grant
    Filed: February 10, 1982
    Date of Patent: December 13, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventor: Katumi Terada
  • Automatic camera
    Patent number: 4367026
    Abstract: In an automatic camera, as a film roll is loaded, the film is once wound up to its terminal end in response to a signal which indicates the closure of a rear lid of the camera. During such time, the number of film perforations is counted to allow the number of film frames which are available to take pictures to be known before any pictures are taken. A display is provided which is decremented as the frames are exposed and the film is wound back, thus indicating the number of film frames remaining.
    Type: Grant
    Filed: August 14, 1981
    Date of Patent: January 4, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventors: Katumi Terada, Yukio Nakajima
  • Film suction mechanism for a camera
    Patent number: 4364653
    Abstract: A film suction mechanism for camera comprises a suction unit disposed within a camera body and connected to a suction path having an end opening formed in the camera body, and film suction openings or grooves formed in a rear lid of the camera and connected to a suction path having an end opening formed in the rear lid. The both end openings are connected together to complete the suction path in response to the closure of the rear lid.
    Type: Grant
    Filed: September 8, 1981
    Date of Patent: December 21, 1982
    Assignee: Olympus Optical Company Ltd.
    Inventor: Katumi Terada
  • Switch for camera
    Patent number: 4324472
    Abstract: A switch for a camera employs a switching element which is formed of pressure sensitive conductive rubber or conductive rubber, to which an external pressure may be applied to cause it to bridge across a pair of conductive contacts, thus turning the switch on and off. The switch is disposed on the surface of a camera so as to be accessible to an external pressure.
    Type: Grant
    Filed: May 18, 1979
    Date of Patent: April 13, 1982
    Assignee: Olympus Optical Company Ltd.
    Inventors: Katumi Terada, Michiharu Saito
  • Apparatus for use with a motor drive
    Patent number: 4323828
    Abstract: An apparatus is provided for use with a motor drive for cancelling the electromagnetic reaction energies developed by a pair of drive motors upon rapid starting or sudden stopping, the latter occurring upon the application of dynamic braking to said motor drive. The apparatus comprises a pair of motors each provided with rotors preferably having moments of inertia which are substantially equal. The output shafts of the motors are operatively connected so as to rotate in opposing directions.
    Type: Grant
    Filed: May 4, 1979
    Date of Patent: April 6, 1982
    Assignee: Olympus Optical Co. Ltd.
    Inventors: Katumi Terada, Kazuyuki Nemoto
  • Battery casing
    Patent number: 4223076
    Abstract: A battery casing comprises a lid which closes a battery receiving chamber. Instead of mounting the lid in an outer panel of an instrument in which the battery casing is used, it is directly mounted on the body of the battery casing, thus avoiding the use of the outer panel of the instrument as an electrical conductive path for a battery contained therein. This permits the entire body including the outer panel of the instrument to be formed of a material such as plastics which is inexpensive and easy to machine.
    Type: Grant
    Filed: July 25, 1979
    Date of Patent: September 16, 1980
    Assignee: Olympus Optical Company Ltd.
    Inventor: Katumi Terada
  • Apparatus for use with a motor drive
    Patent number: 4219764
    Abstract: An apparatus is provided for use with a motor drive for cancelling a reaction energy of a drive motor upon rapid starting or sudden stop. The apparatus comprises a revolving member adapted to be operatively connected with the rotor of the drive motor. The member has an inertia which is equal to that of the rotor, and is adapted to be connected with the latter in the opposite sense therefrom.
    Type: Grant
    Filed: June 17, 1977
    Date of Patent: August 26, 1980
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Katumi Terada, Kazuyuki Nemoto