Patents by Inventor Wouter Van Praag

Wouter Van Praag 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).

  • Compressor with capacity control
    Patent number: 7607899
    Abstract: Compressor containing a pressure regulating system (8) comprising an inlet valve (9); a piston (23) in a cylinder (24) connected thereto; a bridge (14) of this inlet valve (9) with a non-return valve (16) in it, characterized in that the piston (32) is a double-acting piston; the cylinder (24) on the side of the piston (23) turned away from the inlet valve is connected to a part (13) of the rotor chamber (2) situated near the inlet valve (9) via a pipe (28); and the cylinder (26) on the other side of the piston (23) is connected to the above-mentioned part (13) of the rotor chamber (2) and the non-return valve (16) via a pipe (29).
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: October 27, 2009
    Assignee: Atlas Copco Airpower, naamloze vennootschap
    Inventors: Wouter Van Praag, Paul Emmanuel Philomena Verbraeken
  • Compressor with capacity control
    Publication number: 20060018769
    Abstract: Compressor containing a pressure regulating system (8) comprising an inlet valve (9); a piston (23) in a cylinder (24) connected thereto; a bridge (14) of this inlet valve (9) with a non-return valve (16) in it, characterized in that the piston (32) is a double-acting piston; the cylinder (24) on the side of the piston (23) turned away from the inlet valve is connected to a part (13) of the rotor chamber (2) situated near the inlet valve (9) via a pipe (28); and the cylinder (26) on the other side of the piston (23) is connected to the above-mentioned part (13) of the rotor chamber (2) and the non-return valve (16) via a pipe (29).
    Type: Application
    Filed: July 24, 2003
    Publication date: January 26, 2006
    Inventors: Wouter Van Praag, Paul Emmanuel Verbraeken