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:
Apr. 03, 1984
Filed:
Jun. 28, 1983
Rand G Jenkins, Roseville, CA (US);
Norman W Wohlers, Davis, CA (US);
J & W Scientific, Inc., Rancho Cordova, CA (US);
Abstract
An apparatus and method for injecting samples into capillary-type gas chromatographic columns allows a portion of the column to be withdrawn from the chromatograph oven prior to injection. The sample is injected into the withdrawn portion of the column which is then inserted back into the oven to initiate volatilization. The apparatus includes a syringe holder which is attached to the inlet end of the column and a collapsible support mechanism for extending the syringe holder away from the chromatograph oven. The sample is injected into the column while the support is extended away from the oven. After the injection is completed, the support is collapsed causing the portion of the column carrying the sample to be abruptly introduced into the oven.