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:
Sep. 15, 1992
Filed:
Oct. 06, 1989
Applicant:
Inventors:
George E Sgourakes, Millis, MA (US);
Stanislaw Koziol, Wrentham, MA (US);
Assignee:
Millipore Corporation, Bedford, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01L / ;
U.S. Cl.
CPC ...
7386421 ; 277138 ; 277139 ; 277216 ; 277217 ;
Abstract
A sealing means is provided that may be used, among other things, for sample injection apparatus used in liquid chromatography. The seal includes a jacket having a central bore through which a hypodermic needle containing a sample is inserted. The jacket includes a U-shaped cross section having an inner axial surface and an outer axial surface. Metal cylindrical bands which function as springs are positioned tightly against the inner and outer axial surfaces respectively. Each band has a slot extending through its thickness and along its entire axial length.