Patents by Inventor Tenniswood, David M.

Tenniswood, David M. 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).

  • Compact, stowable marker device for underwater location
    Patent number: 5231952
    Abstract: A marker device for marking an underwater location is provided and comprises a heavier-than-water weight member including a reel thereon, an elongated connector line attached to the weight member and wrapped on the reel when the marker device is not in use and unwrapped from the reel when a location is to be marked, an inflatable/deflatable marker balloon on the connector line and stored on the weight member in the deflated condition when the marker device is not in use and removed from the weight member for inflation when a location is to be marked, and valve means communicated to the marker balloon for permitting introduction of gas therein to inflate the balloon and release of gas therefrom for deflating the balloon.
    Type: Grant
    Filed: May 1, 1992
    Date of Patent: August 3, 1993
    Inventor: Tenniswood, David M.