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:
Jul. 22, 2008
Filed:
Apr. 02, 2007
Robin Willats, Columbus, IN (US);
Joseph Callahan, Greenwood, IN (US);
Kwin Abram, Columbus, IN (US);
Govindaraj Kalyanasamy, Indianapolis, IN (US);
Robin Willats, Columbus, IN (US);
Joseph Callahan, Greenwood, IN (US);
Kwin Abram, Columbus, IN (US);
Govindaraj Kalyanasamy, Indianapolis, IN (US);
Emcon Technologies LLC, Wilmington, DE (US);
Abstract
An exhaust valve assembly includes a flapper valve fixed to a valve shaft where the flapper valve is movable between a closed position, an intermediate position, and an open position. A resilient member biases the flapper valve toward the closed position. An electric actuator actively moves the flapper valve at least from the closed position to the intermediate position. A coupling mechanism couples the valve shaft to an electric actuator shaft and allows the flapper valve to move to the open position in response to exhaust flow sufficient to overcome a biasing force of the resilient member without requiring input from the electric actuator.