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:
Feb. 02, 1982
Filed:
Mar. 26, 1979
Robert Brownlee, Santa Clara, CA (US);
Brownlee Labs, Inc., Santa Clara, CA (US);
Abstract
A coupler or union for passing fluid under pressure from a column or tube in which the tube is received within a chamber in fluid communication through the floor within said coupler and forming a zero dead volume seal therewith, an annular recess in the coupler or union surrounding the tube or column and containing a balanced hydraulic seal in contact with the recess wall and tube or column and opening in communication toward said dead volume seal so that leakage from the latter under high pressure fills and activates the balanced hydraulic seal to the line pressure. The coupler or union is particularly applicable for high pressure liquid chromatograph column connections.