Patents by Inventor Donovan B. True

Donovan B. True 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: 5617891
    Abstract: A siphon apparatus having a uniquely designed base for initiating fluid transfer from any fluid container having an opening which is large enough to accommodate a single tube to a desired site in a reasonably short transfer time without the likelihood of spillage or unintentional bodily contact with the fluid being transferred. The siphon apparatus includes the base having two distinct openings for inserting a pressure inducing device and a fluid transfer tube. The base also includes an internal channel for connecting the pressure tube opening to the fluid transfer tube opening thereby allowing air introduced into the pressure inducing tube to enter the sealed fluid container through the opening for the fluid transfer tube. The apparatus may be stored in a compact carrying case or may be hung on a wall by forming the pressure inducing tube and the fluid transfer tube into a single tubular loop.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: April 8, 1997
    Inventor: Donovan B. True
  • Patent number: 4837965
    Abstract: An ice fishing tip-up utilizes a conventional rod and reel in a pivotal mounting to provide the tipping action. The rod and reel may be quickly and easily removed from the pivotal mounting to enable the rod and reel to be used in a conventional manner to hook and land a fish.
    Type: Grant
    Filed: April 14, 1988
    Date of Patent: June 13, 1989
    Inventor: Donovan B. True