Patents by Inventor Sei Jinsenji

Sei Jinsenji 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: 4334751
    Abstract: A camera of the type wherein a perforated strip of film is unrolled from a magazine in a magazine chamber at one end of the camera body and wound up by a takeup spool in a spool chamber at its opposite end. In order to afford easy loading of the film, the takeup spool is provided with one or more film catcher blades of arcuate cross section each pivotally mounted thereon along one edge extending parallel to the spool axis. The opposite edge of each film catcher blade is spring biased away from the surface of the takeup spool and normally held separated therefrom. Formed on each film catcher blade is at least one projection which, upon rotation of the takeup spool in a predetermined direction, becomes engaged in one of the perforations in the film thereby permitting the spool to wind up the film. The camera is further equipped with a magazine orienting member pivotally mounted on the back cover of the camera body and spring-loaded into engagement with the magazine in the magazine chamber.
    Type: Grant
    Filed: October 3, 1980
    Date of Patent: June 15, 1982
    Assignee: Ricoh Co., Ltd.
    Inventors: Sei Jinsenji, Yubao Jibiki
  • Patent number: 3942743
    Abstract: A tape cassette which automatically brings the tape into direct engagement with the detection head and into indirect engagement with the drive wheel of a machine when the tape cassette is pushed in one direction into the machine. Disposed in the cassette is a rotary roller which is brought, at the flanges provided on its outer periphery, into engagement with the drive wheel and driven thereby. The rotary roller cooperates with other guide members to maintain at the appropriate tension an endless belt which backs up the inner side of a portion of the tape which is paid out from one of the cores and wound onto the other core.
    Type: Grant
    Filed: July 24, 1974
    Date of Patent: March 9, 1976
    Assignee: Ricoh Company, Ltd.
    Inventor: Sei Jinsenji