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. 27, 2012
Filed:
Dec. 30, 2008
Dean M. Erickson, Simpsonville, SC (US);
David W. Smith, Simpsonville, SC (US);
Douglas S. Byrd, Greer, SC (US);
Hua Zhang, Greer, SC (US);
Daniel B. Holcombe, Greenville, SC (US);
Dean M. Erickson, Simpsonville, SC (US);
David W. Smith, Simpsonville, SC (US);
Douglas S. Byrd, Greer, SC (US);
Hua Zhang, Greer, SC (US);
Daniel B. Holcombe, Greenville, SC (US);
General Electric Company, Schenectady, NY (US);
Abstract
An assembly for delivering a supply of liquid fuel and a supply of purge air to a gas turbine engine, the assembly comprising: an annular dual-flow check valve for controlling the flow through concentric channels that have a common outlet, the annular dual-flow check valve comprising: an outer body and an inner body that define the concentric channels, which include an outer channel and an inner channel formed therein; a spring activated annular poppet that resides in the outer channel and has a range of motion in the axial direction; and an opening through the inner body that connects the outer channel to the inner channel; wherein the axial movement of the annular poppet is regulated by the pressure of the flow upstream of the annular poppet in the outer channel; and the axial range of motion of the annular poppet includes at least two axial positions.