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. 20, 1987
Filed:
Mar. 28, 1986
William Dirkin, Portage, MI (US);
Pneumo Abex Corporation, Boston, MA (US);
Abstract
A composite pressure vessel including a fluid port extending through the composite sidewall structure formed by providing a radial hole through the sidewall structure for receipt of an externally removable porting plug. The porting plug is retained within the radial hole by threaded engagement in an internally threaded grommet which may either be incorporated into the composite windings of the sidewall structure or held in place against the exterior surface of the sidewall structure by local composite windings. At the inner end of the porting plug is a seal groove containing a ring seal which is sized to form a fluid-tight seal around a porting hole in a liner member in the interior of the sidewall structure to prevent fluid leakage between the porting plug and liner member. The inner diameter of the seal groove is formed by a reduced diameter end portion at the inner end of the porting plug, whereas the outer diameter of the seal groove is formed by a back-up ring surrounding such reduced diameter end portion in radial spaced relation therefrom. The back-up ring is preloaded against the liner member during threading of the porting plug into the grommet to ensure a tight fit between the back-up ring and liner member.