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. 21, 1984
Filed:
Sep. 28, 1982
James B Sullivan, Tulsa, OK (US);
T. D. Williamson, Inc., Tulsa, OK (US);
Abstract
A closure for a cylindrical opening having improved venting means including a plug body for removably positioning within and sealing a cylindrical opening, the body having an axial opening therethrough and having means when the plug is within the cylindrical opening to seal against pressure, a tubular valve element slidably received in the plug body opening, the element having at least one radial opening adjacent to and spaced from its closed inner end, a spring normally biasing the tubular element towards the plug outer end so that the radial opening is sealed by the wall of the plug member axial opening and a push rod for displacing the tubular element inwardly to expose the radial opening to the interior of the plug body to vent fluid pressure.