Patents by Inventor James H. Hardy

James H. Hardy 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: 4675579
    Abstract: The AC power line to a street luminaire carries a 200 KHz carrier signal for operating a switching relay that connects a dimming reactor in series with the discharge lamp. A pick-off transformer has a primary winding connected in series with the ballasting means for the lamp, and a secondary winding connected to a carrier signal detector operating the switching relay. A capacitor connected across the primary has a value resonating the primary magnetizing reactance of the transformer at the carrier frequency. A resistor substantially higher in value than the characteristic impedance of the line but not several orders of magnitude higher, is preferably connected across the primary winding to serve as a terminating impedance.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: June 23, 1987
    Assignee: General Electric Company
    Inventors: James H. Hardy, Daniel V. Owen, Candler A. Willis
  • Patent number: 4553350
    Abstract: The apparatus includes an elongated hollow body with exposed portions of wick extending along the body and having inner portions extending into the body through openings of the body. Each end of an exposed portion is peripherally sealed with respect to the body opening through which it extends, and inner portions of the wick communicate with a chemical in the body. Exposed portions of the wick span the length of the body and the chemical is applied by moving the body horizontally across a field in a direction transverse to its length. The wick material can be braided nylon rope, and the body can be made of any selected length for multi-row application of the chemical.
    Type: Grant
    Filed: December 11, 1979
    Date of Patent: November 19, 1985
    Inventors: James H. Hardy, James E. Roberson
  • Patent number: 4187638
    Abstract: The apparatus includes an elongated hollow body with exposed portions of wick extending along the body and having inner portions extending into the body through openings of the body. Each end of an exposed portion is peripherally sealed with respect to the body opening through which it extends, and inner portions of the wick communicate with a chemical in the body. Exposed portions of the wick span the length of the body and the chemical is applied by moving the body horizontally across a field in a direction transverse to its length. The wick material can be braided nylon rope, and the body can be made of any selected length for multi-row application of the chemical.
    Type: Grant
    Filed: September 26, 1978
    Date of Patent: February 12, 1980
    Inventors: James H. Hardy, James E. Roberson
  • Patent number: D262179
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: December 8, 1981
    Inventors: James H. Hardy, James E. Roberson
  • Patent number: D262180
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: December 8, 1981
    Inventors: James H. Hardy, James E. Roberson
  • Patent number: D262181
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: December 8, 1981
    Inventors: James H. Hardy, James E. Roberson