Patents by Inventor David R. Denis

David R. Denis 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).

  • METHOD AND DEVICE FOR USING DATABASES KEYED TO PHYSICAL ADDRESSES
    Publication number: 20180157679
    Abstract: A method for improving the targeting of communications with occupants of particular addresses by storing information in a database keyed on particular addresses and not related to the instant occupant of the address is disclosed. Further disclosed is a device which implements this method and automatically performs the method. An improved embodiment of the method and the implementing device with additional features enhancing the functionality of the method and device are also disclosed.
    Type: Application
    Filed: December 5, 2016
    Publication date: June 7, 2018
    Inventor: David R. Denis
  • Temperature compensated depth gauge for scuba diving
    Patent number: 3990306
    Abstract: A scuba diving oil filled depth gauge has a rigid or semi-rigid case that houses operative depth gauge elements. Outside pressure is communicated to the inside oil through a rolling diaphragm made of thin and highly flexible rubber-like material. The expansion and contraction of the oil due to thermal and other effects produces compensation at the rolling diaphragm without the imposition of stresses whereby a true communication of external to internal pressure is accomplished for accurate reading of the gauge.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: November 9, 1976
    Assignee: Under Sea Industries, Inc.
    Inventor: David R. Denis
  • Independent weight system
    Patent number: 3967459
    Abstract: An independent weight system for underwater breathing equipment, the underwater breathing equipment having an air tank and a flotation device attached to a supportive back pack assembly, the weight system having a clamping means securing a weight assembly to the tank whereby the center of gravity of the underwater breathing equipment and attached weight system is below the center of buoyancy of the underwater breathing equipment and weight assembly.
    Type: Grant
    Filed: January 23, 1975
    Date of Patent: July 6, 1976
    Assignee: Under Sea Industries, Inc.
    Inventor: David R. Denis