Patents by Inventor Bill E. Edmondson

Bill E. Edmondson 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).

  • Rate-of-ascent monitoring instrument for divers
    Patent number: 3992949
    Abstract: A rate-of-ascent instrument for underwater use by divers has a transparent depth gauge through which a dial of an associated timepiece is visible. The depth gauge has a generally labyrinthine capillary channel spiraling counterclockwise inwardly from the open end thereof and overlying the dial of the timepiece. As the instrument moves upwardly from a submerged position, the rate of upward movement is monitored by comparing the clockwise movement of the meniscus of the contained water column with the moving second hand of the timepiece.
    Type: Grant
    Filed: December 29, 1975
    Date of Patent: November 23, 1976
    Inventor: Bill E. Edmondson