Patents by Inventor Atsushi Manmoto

Atsushi Manmoto 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).

  • Smoke detecting apparatus capable of detecting both smoke fine particles
    Patent number: 5477218
    Abstract: A light emitting device for projecting a light beam onto a monitor area, and a light receiving device, arranged so that a light beam is not directly received by the device, for receiving diffused light caused as a result of fine particles, such as dust, or smoke caused by a fire, entering the monitor area, are provided. Also, an amplifying device for amplifying an output from the light receiving device, and a counting device for counting the output from the amplifying device in units of time are provided. In addition, a computing device for computing an average value or an integrated value of the output from the amplifying device in units of time, and a determining device for determining the level of contamination of the monitor area on the basis of the count value of the counting device and for determining the level of the fire on the basis of the average value or the integrated value computed by the computing device, are provided.
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: December 19, 1995
    Assignee: Hochiki Kabushiki Kaisha
    Inventors: Atsushi Manmoto, Yukio Yamauchi