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:
Oct. 24, 2006
Filed:
Jul. 12, 2004
S. Michael Baker, Delta, CA;
David Mumford, Richmond, CA;
Adrian Post, Surrey, CA;
Tim Lennox, Vancouver, CA;
Bradley D. Douville, West Vancouver, CA;
Alain M. J. Touchette, Surrey, CA;
S. Michael Baker, Delta, CA;
David Mumford, Richmond, CA;
Adrian Post, Surrey, CA;
Tim Lennox, Vancouver, CA;
Bradley D. Douville, West Vancouver, CA;
Alain M. J. Touchette, Surrey, CA;
Westport Power Inc., Vancouver, CA;
Abstract
A dual fuel injection valve separately and independently injects two different fuels and comprises a dual needle assembly with a hollow open-ended outer needle and an inner needle disposed within the hollow interior. A cap cooperates with the outer needle to cover the open end, and the outer needle and the cap together comprise the inner valve body. The outer and inner needles are each movable independently from each other between respective open and closed positions. A spring disposed between the cap and the inner needle contributes to biasing the inner needle in the closed position. The cap can be joined to the outer needle, whereby the cap can provide a limit to the movement of the inner needle. In another embodiment the cap can be detached from the outer body, allowing the spring to space the cap away from the outer needle, assisting with biasing the outer needle closed.