Patents by Inventor Maciej DOBROWOLSKI

Maciej DOBROWOLSKI 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).

  • Ventilating valve for a sewer pipe
    Patent number: 10167966
    Abstract: A reliable low-wear ventilating valve for mounting on a sewer pipe, to prevent the development of a negative pressure and also to prevent the escaping of unpleasant odors. The ventilating valve includes a tubular body, one end of which is configured as a fastening piece for mounting on a sewer pipe and the other end of which is configured as a ventilating valve head which has inlet openings for the inlet air into the sewer pipe, which are located between concentric rings which are arranged at a distance from the tubular body and extending symmetrically about the latter on ribs of the tubular body.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: January 1, 2019
    Assignee: Capricorn S.A.
    Inventor: Maciej Dobrowolski
  • VENTILATING VALVE FOR A SEWER PIPE
    Publication number: 20160290518
    Abstract: A reliable low-wear ventilating valve for mounting on a sewer pipe, to prevent the development of a negative pressure and also to prevent the escaping of unpleasant odors. The ventilating valve includes a tubular body, one end of which is configured as a fastening piece for mounting on a sewer pipe and the other end of which is configured as a ventilating valve head which has inlet openings for the inlet air into the sewer pipe, which are located between concentric rings which are arranged at a distance from the tubular body and extending symmetrically about the latter on ribs of the tubular body.
    Type: Application
    Filed: March 24, 2016
    Publication date: October 6, 2016
    Inventor: Maciej DOBROWOLSKI