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:
Nov. 08, 2016
Filed:
Aug. 11, 2010
Niall James Caldwell, Edinburgh, GB;
William Hugh Salvin Rampen, Edinburgh, GB;
Niall James Caldwell, Edinburgh, GB;
William Hugh Salvin Rampen, Edinburgh, GB;
Artemis Intelligent Power Limited, Loanhead Lothian, GB;
Sauer-Danfoss APS, Nordborg, DK;
Abstract
The present invention provides a fluid system () comprising a source of hydraulic fluid under pressure supplying a hydraulic fluid consumer () together with a valve passing fluid between said source and said fluid consumer (). A first fluid compliance () is situated between said source () and said valve () and a variable restrictor () is provided for varying the cross sectional area available for flow of fluid through said valve () and is movable between a first position (A) with a larger said area and a second position (B) with a smaller said area. A bias means () biases said restrictor () towards said second position while an opening means (Fa) urges said restrictor () against said bias () when fluid flows through said valve () and a damping means () damps movement of said restrictor between said first and second positions and provides a resistance which increases with the velocity of displacement of said restrictor ().