Patents by Inventor Hisashi Hamada

Hisashi Hamada 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: 4723141
    Abstract: A camera having a provision for multiple exposures comprises an exposure mode setting member for selectively setting the camera operation either to an ordinary-exposure mode or to a multiple-exposure mode, a switch member which is rendered operative only when the exposure mode setting member selects the multiple-exposure mode and a one-frame film advance mechanism actuated by the operation of the switch member. This camera further comprises a data recording device for recording data such as the date on a film once every frame and a mark recording device for recording the same number of marks as there have been multiple exposures upon every exposure.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: February 2, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisashi Hamada, Katsuhiko Yamamoto, Takeshi Yoshino, Michihiro Shiina, Shigenori Goto, Masayoshi Hirai, Shiro Hashimoto
  • Patent number: 4720721
    Abstract: A film wind-up control apparatus of a camera in which a film is transported in zigzag direction passing around at least a guide roller located before an exposure station, is adapted to advance the film a predetermined length of the film when an exposure is made in a predetermined period of time and an extra length in addition to the predetermined length after the predetermined period of time has elapsed, so as to advance that part of the film which was previously positioned around the guide roller, beyond the exposure station. The apparatus is also adapted to indicate the number of possible exposures with one decrement every other occurrence of the extra length of film advance. In this way, film that has become permanently curled around the guide roller never comes to rest in the exposure station; but at the same time, the count of remaining frames is kept accurate.
    Type: Grant
    Filed: February 12, 1987
    Date of Patent: January 19, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisashi Hamada, Katsuhiko Yamamoto, Takeshi Yoshino, Masayoshi Hirai, Shiro Hashimoto, Michihiro Shiina, Shigenori Goto
  • Patent number: 4720718
    Abstract: A reflex camera having a reflex mirror and a light-blocking plate which are pivotally mounted for swinging movement so as to move between a viewing position and a photographing position. The reflex camera has a driving mechanism including an electric motor for causing the swing-up and -down movement of the reflex mirror and the light-blocking plate between the above-mentioned two positions, and a position-detecting device to detect the moved positions of the reflex mirror and the light blocking plate so as to control the speed of rotation of the electric motor according to the detected positions, thereby to prevent shocks and vibrations on the reflex mirror and the light-blocking plate.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: January 19, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuhiko Yamamoto, Takeshi Yoshino, Masayoshi Hirai, Shiro Hashimoto, Michihiro Shiina, Shigenori Goto, Hisashi Hamada
  • Patent number: 4720719
    Abstract: A film wind-up apparatus is incorporated in an interchangeable film magazine adapted to receive a film which has a backing paper including a leading end portion. The winding device automatically winds up the leading end portion only after the magazine is attached to a camera having a winding motor, film is loaded in the film magazine, the back cover of the magazine is closed, and a light-shielding plate is removed. Upon completion of the winding operation, a photosensitive portion of the film faces the exposure aperture, and a camera so equipped is ready to make exposures.
    Type: Grant
    Filed: February 26, 1987
    Date of Patent: January 19, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisashi Hamada, Katsuhiko Yamamoto, Takeshi Yoshino, Masayoshi Hirai, Shiro Hashimoto, Michihiro Shiina, Shigenori Goto
  • Patent number: 4665873
    Abstract: In a double-lever type governor for fuel injection pump providing a governor lever and a tension lever, and securing a start fuel increment stroke in the governor lever by the help of a start spring; a governor for fuel injection pump providing a locking mechanism which connects said both levers at the time when the start fuel increment stroke of the governor lever becomes zero or approximately zero to be eliminated.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: May 19, 1987
    Assignee: Yanmar Diesel Engine Co., Ltd.
    Inventors: Yoshihiro Yogome, Sheizi Itsuki, Tokuzu Shimizu, Tsutomu Shimizu, Hisashi Hamada