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. 25, 1994
Filed:
Jun. 11, 1993
Woodfin V Ligon, Schenectady, NY (US);
Hans Grade, Schenectady, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
An apparatus and a method providing an open-split interface between a gas chromatograph and a mass spectrometer for delivering a substantially solvent free sample material from the gas chromatograph to the mass spectrometer. The apparatus has a junction having an inlet to receive a gas chromatograph effluent. An inert auxiliary fluid such as helium supplied through a port is used to scavenge the solvent rich effluent to atmosphere. A transfer member disposed partially within the junction is initially positioned at a first position to accomplish the aforementioned scavenging action. The transfer member is then repositioned to a second position to direct the substantially solvent free sample to the mass spectrometer for a qualitative and a quantitative analysis.