Patents by Inventor Tsuyoshi Nagasawa

Tsuyoshi Nagasawa 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: 5291352
    Abstract: A tape unit includes:a cassette mount section for detachably mounting a tape cassette therein, the cassette mount section having at least two reel bases for engagement respectively with two tape reels of the tape cassette mounted; a cover movably supported on a chassis, the cover being movable between an open position for opening the cassette mount section and a closed position for closing the cassette mount section; a cassette holder movably supported on the chassis, the cassette holder being movable between an ejection position for insertion and removal of the tape cassette and a cassette mounting position for mounting the tape cassette in the cassette mount section; a tape-loading device for drawing a portion of tape out of the tape cassette mounted in the cassette mount section and causing the tape portion to pass through a predetermined tape path; and a link device for linking the cassette holder and the tape-loading device to the cover, the linkage being such that during movement of the cover from the o
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: March 1, 1994
    Assignee: Sony Corporation
    Inventor: Tsuyoshi Nagasawa
  • Patent number: 5151832
    Abstract: A tape loading device that draws a tape from a tape cassette and loads it into a tape traveling path by tape loading elements as it is moved from a return position to an advance position has a loading motion and an unloading motion that are mechanically triggered as a result of rotation of a mode motor and in which, in order to load or unload the tape, the tape loading elements undergo reciprocal motion in response to normal or reverse rotation of a capstan motor, whereby it is possible to load and unload the tape at high speed and to miniaturize the tape loading device.
    Type: Grant
    Filed: December 11, 1990
    Date of Patent: September 29, 1992
    Assignee: Sony Corporation
    Inventor: Tsuyoshi Nagasawa
  • Patent number: 4908723
    Abstract: A recording and/or reproducing apparatus for a magnetic tape cassette has a rotary head mounted on the recording and/or reproducing apparatus and a loading mechanism for extracting a length of magnetic tape from a magnetic tape cassette and moving the length of magnetic tape to various positions corresponding to various operation modes of the recording and reproducing apparatus. The loading mechanism includes first and second movable members respectively movable along predetermined first and second paths.
    Type: Grant
    Filed: February 10, 1986
    Date of Patent: March 13, 1990
    Assignee: Sony Corporation
    Inventors: Masao Ohyama, Tsuyoshi Nagasawa
  • Patent number: 4777546
    Abstract: A cassette-type magnetic tape recording and/or reproducing apparatus is comprised of a rotary drum unit having a magnetic head or heads for recording or reproducing signals on a magnetic tape, a loading device movable between a first position and a second position by the operation of a single electric motor, a tape guide device responsive to movement of the loading device to extract the tape from a cassette and to guide the tape by being moved between an inoperative position and an operative position in which a preset tape path is defined in proximity to the drum device, and a pinch roller operating device also associated with the loading device for pressing the pinch roller against the capstan or disengaging the pinch roller from the capstan.
    Type: Grant
    Filed: April 22, 1986
    Date of Patent: October 11, 1988
    Assignee: Sony Corporation
    Inventors: Tsuyoshi Nagasawa, Yoshinori Yamamoto, Masao Ohyama, Yutaka Fukuyama