Patents by Inventor David D. Hilton

David D. Hilton 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: 6097294
    Abstract: An adjustable infant protective safety and support device is disclosed having one or more covered, foam barriers detachably and adjustably mounted with hook and loop fasteners upon a cloth base. Affixed to each foam barrier is an activation bar and microswitch combination. This combination, when connected in an electrical circuit with one or more warning devices, act to awaken a sleeping adult lying alongside of the infant should the adult roll into contact with the device. Alternatively, the activation bar and microswitch combination may be reversed to face the infant in order to warn an adult that the child is moving in contact with the barrier. Desirable optional features for the infant protective safety support device include both audible and vibratory warning modes of operation.
    Type: Grant
    Filed: August 18, 1999
    Date of Patent: August 1, 2000
    Inventor: David D. Hilton
  • Patent number: 5386594
    Abstract: A bathroom ventilation appliance that mounts on existing toilets including: (i) a Toilet Tank Manifold which provides access to the water jackets of the toilet for purposes of drawing odorous air out of the toilet bowl, and supplying water to the Reservoir P-Trap, and providing a mount for a proximity detector switch; (ii) a fan and valve housing that embodies a fan and valve for the purposes of creating a vacuum to draw odorous air out of the toilet bowl and deliver it into the existing sewer vent system of the building, and preventing syphoning of the Reservoir P-Trap water during the flush cycle of the toilet, and to act as a secondary sewer gas back-flow block; (iii) a Reservoir P-Trap which provides primary sewer gas back-flow blockage; (iv) a Toilet Base Manifold for the purposes of providing an exhaust port into the existing sewer vent system of the building; is disclosed wherein the Toilet Ventilating Manifold System is attached to the bottom of an existing toilet base and tank, preventing odorous air
    Type: Grant
    Filed: March 30, 1994
    Date of Patent: February 7, 1995
    Inventor: David D. Hilton