Patents by Inventor Calvin P. O'Neal

Calvin P. O'Neal 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).

  • Protective metal housing for plastic air admittance valve
    Patent number: 6799600
    Abstract: A protective metal housing is disclosed for an air admittance valve having a head and a hollow stem adapted for coupling to a sewer vent pipe. The housing comprises a cylindrical adaptor having a through passage internally configured for connection at one end to the sewer vent pipe, and for connection at an opposite end to the stem of the valve. A cover is structured and dimensioned to coact with the adaptor in defining an enclosed chamber for containing the head of the valve. The cover is removably secured to the adaptor and has inlet openings arranged to admit ambient air into the enclosed chamber.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: October 5, 2004
    Assignee: IPS Corporation
    Inventor: Calvin P. O'Neal
  • Protective metal housing for plastic air admittance valve
    Publication number: 20030221727
    Abstract: A protective metal housing is disclosed for an air admittance valve having a head and a hollow stem adapted for coupling to a sewer vent pipe. The housing comprises a cylindrical adaptor having a through passage internally configured for connection at one end to the sewer vent pipe, and for connection at an opposite end to the stem of the valve. A cover is structured and dimensioned to coact with the adaptor in defining an enclosed chamber for containing the head of the valve. The cover is removably secured to the adaptor and has inlet openings arranged to admit ambient air into the enclosed chamber.
    Type: Application
    Filed: June 4, 2002
    Publication date: December 4, 2003
    Inventor: Calvin P. O'Neal