The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 2011
Filed:
Aug. 01, 2005
Phil Regan, Drunen, NL;
Roy Van Swieten, Hedel, NL;
Niels Van Wieringen, Hertogenbosch, NL;
I.P.S. Research and Development B.V., Vlijmen, NL;
Abstract
A novel pressure control device is provided comprising a first cylinder () at a predetermined excess pressure, a piston () with a sealing ring () being movable within said first cylinder, and a second cylinder (). The first cylinder () is encompassed by the second cylinder () as to form a ring-shaped passage which is leading to the outside. A valve in said passageway is released and closed by a stem () of the piston (). The open end of the first cylinder () is provided with at least one axially directed incision (), such that the piston () with the sealing ring () introduced in the first cylinder () and covering the end of the incision () is in a non-pressurized position. The stem () has a stop element () which closes the valve in the upper position of the piston, wherein the piston stroke essentially defines the excess pressure.