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:
Apr. 08, 2003
Filed:
Dec. 22, 2000
Thierry Le Fur, Merignac, FR;
Bernard Debons, Lege, FR;
André LaFond, Merignac, FR;
André Dumortier, Merignac, DE;
Abstract
The thrust device comprises a valve body ( ) having a chamber ( ) surrounding part of the needle, at least one gas admission opening ( ) opening out into the chamber, and a gas outlet opening ( ) opening out into the chamber and defined by a wall portion which co-operates with a nose portion ( ) of a moving needle ( ) to define an outlet section for gas leaving the chamber. Actuator means ( ) control the position of the needle in the valve body by acting on a rear end portion of the needle. The nose ( ) of the moving needle ( ) has an aerodynamic concave profile ( ) and the wall portion ( ) which defines the outlet ( ) from the chamber is shaped in such a manner as to be capable of directing the exiting gases essentially against the concave side of the nose of the needle, which needle acts as the main member for taking up thrust.