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:
May. 09, 2006
Filed:
Dec. 12, 2000
Anders Fjeld, Hovik, NO;
Nils Terje Ottestad, Tonsberg, NO;
Anders Fjeld, Hovik, NO;
Nils Terje Ottestad, Tonsberg, NO;
Techwood AS, Stavanger, NO;
Abstract
A valve device for controlled supply of a pressure fluid, having a housing () with a supply chamber () for the supply of a pressure fluid from an inlet () connected to a pressure fluid source, and having an outlet () communicating with the supply chamber () via an outlet valve (). The valve device includes a reference chamber () connected to the outlet () through a narrow, leakage-forming duct (), a regulating unit () adapted to keep the supply chamber () permanently pressurised at a value just above the pressure in the reference chamber (), and a control valve () having a valve body () for opening and closing of a passage () between the supply chamber () and the reference chamber (). The control valve body () is arranged to be influenced by an external force for opening of the passage (), and to be influenced by a closing force determined by the pressure in the chambers () at the cessation of the influence of the external force, and the outlet valve () is a one-way valve having a predetermined opening pressure.