Patents by Inventor Charlie C. Rogers

Charlie C. Rogers 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).

  • Piezoelectric horn and a smoke detector containing same
    Patent number: 4282520
    Abstract: An ionization smoke detector having two ionization chambers, one completely open to the ambient atmosphere and the other, a reference chamber, in communication with the atmosphere only through a breather tube having a defined length to diameter ratio. The detector employs a piezoelectric horn mounted on a cylindrical tube-like structure and attached to a printed circuit board containing one or more holes opposite the horn element so as to form a resonant chamber. The invention further contemplates a test switch which can be used to determine whether the battery is charged and the circuits are functioning.
    Type: Grant
    Filed: October 25, 1978
    Date of Patent: August 4, 1981
    Inventors: John I. Shipp, Charlie C. Rogers, III
  • Electronic distance measuring instrument
    Patent number: T101001
    Abstract: The design relates to an electronic distance measuring instrument substantially as shown.
    Type: Grant
    Filed: May 28, 1980
    Date of Patent: September 1, 1981
    Inventors: John I. Shipp, Charlie C. Rogers
  • Electronic distance measuring instrument
    Patent number: D268910
    Type: Grant
    Filed: May 28, 1980
    Date of Patent: May 10, 1983
    Assignee: Benchmark
    Inventors: John I. Shipp, Charlie C. Rogers