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. 17, 1995
Filed:
Jun. 30, 1994
Applicant:
Inventor:
Mark E Shiffler, Annapolis, MD (US);
Assignee:
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
13761411 ; 138 89 ;
Abstract
A fluid flow control device is defined by a plurality of flow control sta mounted on a rod. Each of the flow control stages includes a support brace providing sliding support of the rod, an end plate fixably mounted on the rod, and an elastomeric element mounted on the rod between the support brace and the end plate. The elastomeric element defines an annular cavity around an inside perimeter of the tube. The elastomeric element expands between the end plate and support brace in accordance with axial movement of the rod in order to adjust the size of the annular cavity.