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:
Nov. 30, 1993
Filed:
Jul. 09, 1992
William F Buckminster, Voorhees, NJ (US);
Richard J Viscusi, Laurel Springs, NJ (US);
Larry V Greenley, Vienna, VA (US);
SP Industries Limited Partnership, Miami, FL (US);
Abstract
A pressure relief valve in a cap, and more particularly a pressure relief valve in a cap for use with pressure vessels in chromatography systems. In one exemplary application the valve is contained within the cap of a pressure chromatography column. In a second exemplary application the valve is contained within the cap of a mobile phase reservoir of a high performance liquid chromatography system. The valve generally comprises a body, a sealing element, and a force applying means. The body of the valve is formed into the cap and defines an inlet in communication with the interior of the column, an outlet in communication with ambient air, a first bore, and a seat. The sealing element slides within the body and is urged into sealing contact with the seat by the force applying means. The sealing element has a raised lip at its sealing face to provide a substantial sealing force per unit of sealing surface area.