Patents by Inventor Schoichi Nakao

Schoichi Nakao 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).

  • Handrail safety device
    Patent number: 3934699
    Abstract: A moving stairway having inlet housings provided externally of skirt guards, adjacent to entrance and exit portions thereof, through which handrails run in or run out. This handrail safety device comprises each of said inlet housings being provided externally of each skirt guard entrance and exit portions through which the handrails run in or run out; and a detecting switch provided in each inlet housing, said detecting switch being actuated in response to an external force acting on the inlet housing in a horizontal or vertical direction thereof, thereby interrupting movement of the moving stairway.
    Type: Grant
    Filed: March 1, 1974
    Date of Patent: January 27, 1976
    Assignee: Hitachi, Ltd.
    Inventors: Chuichi Saito, Schoichi Nakao