Patents by Inventor Nishiyama Yoshihiro

Nishiyama Yoshihiro 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: 5368131
    Abstract: A powerless emergency elevator includes guide rails (2) erected vertically; an elevator car (6) supported by a flexible rope (4) so as to be movable along the guide rails; a lock mechanism (7) provided on a top of the elevator car and biased in a locking direction for locking the elevator car to the guide rails; a power transmission path (9) extends upwardly from a floor plate (8) of the elevator car to the lock mechanism; a clutch mechanism (10) provided between the lock mechanism and the power transmission path for connecting or disconnecting the lock mechanism to the power transmission path; an auxiliary lock mechanism (11) provided on a side wall of the elevator car for releasing the clutch mechanism at evacuation and exit floors to thereby cut off the power transmission path; a handle (12) provided within the elevator car; a lock releasing mechanism (13) provided in the power transmission path for releasing the lock mechanism via the power transmission path by manipulating the handle; a lock releasing me
    Type: Grant
    Filed: August 27, 1993
    Date of Patent: November 29, 1994
    Inventor: Nishiyama Yoshihiro