Abstract: An apparatus (100) and a method to prevent undesired objects (not shown) when communication conduit (not shown) is disposed therethrough. The apparatus (100) and method include a flapper assembly (150) to selectively open and close when objects (not shown) larger than the communications conduit (not shown) are desired to pass therethrough.
Type:
Application
Filed:
May 3, 2005
Publication date:
October 2, 2008
Applicant:
ADVANCE MANUFACTURING TECHNOLOGY, INC.
Inventors:
Max H. Smith, Douglas B. Leeth, John A. Lemke