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:
Jan. 11, 1977
Filed:
Feb. 26, 1975
Applicant:
Inventor:
Gary W Howell, Elkton, MD (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
7342 / ; 137565 ; 137605 ;
Abstract
Disclosed herein is an apparatus for injecting a quantity of sample liquid into a continuously flowing carrier liquid comprising a housing, a primary channel, carrier inlet and outlet means both connected to the primary channel to form a carrier conduit through the housing, sample inlet and outlet channels both connected to the primary channel to form a sample conduit through the housing, a normally closed pressure relief valve disposed in the primary channel between the sample conduit and the carrier conduit, and means to change the pressure differential between the liquid flowing in the sample and carrier conduits.