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:
Aug. 05, 1997
Filed:
Dec. 14, 1994
David K Waterman, Santa Fe Springs, CA (US);
Rohrback Cosasco Systems, Inc., Santa Fe Springs, CA (US);
Abstract
A high pressure access fitting for a vessel, pipe or like structure includes a body of a material which is weld compatible with the vessel so the fitting may be welded to the wall of the vessel. The fitting includes an internally threaded section made of another material which is a corrosion resistant alloy and which acts to inhibit galvanic corrosion. The threaded section is an insert made of HASTELLOY.RTM., for example, and is threaded in place within the body with fine threads and with a metallic C-ring seal protecting the axial inner ends of the threads. The outer end projects beyond the body and provides a corner for a fillet weld. In addition, the fine threads of the insert/body connection are protected by a high temperature expandable sealing compound.