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. 07, 1997
Filed:
Oct. 20, 1995
James A Amburn, Fort Oglethorpe, GA (US);
Douglas S Porter, Simsbury, CT (US);
Krishnamurthi M Rajan, Chattanooga, TN (US);
Combustion Engineering Inc., , CT (US);
Abstract
In order to plug a pressure vessel penetration through which a heater was disposed, a stepped diameter hollow cylinder is provided with grafoil seals which are set on an annular shoulder defined by the stepped diameters of the cylinder and compressed against a lower annular edge of a sleeve which is partially machined away. The hollow cylinder is locked in position in the sleeve by a plurality of barb-shaped flanges which are formed at the upper ends of a plurality of flexible finger-like segments defined in the upper end of the hollow cylinder, and which engage the upper end of the sleeve. A rod is disposed in the hollow cylinder and welded in positon to complete the plug.