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. 06, 1981
Filed:
Aug. 23, 1978
Applicant:
Inventor:
Carl L Shackelford, San Pablo, CA (US);
Assignee:
Altex Scientific, Inc., Berkeley, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
13762546 ; 7342 / ;
Abstract
A sample injection valve using a member having four ports as a fluid system inlet, a sample injection inlet, a fluid system outlet, and a vent. The valve also uses a fluid sample reservoir and includes a controller for simultaneously connecting the fluid system inlet and outlet and interposing the fluid reservoir between the sample injection inlet and the vent. A switch changes the position of the fluid reservoir to one of interposition between the fluid system inlet and the fluid system outlet.