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:
Nov. 04, 1986
Filed:
Sep. 10, 1985
Hideo Seki, Ibaraki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A liquid sample injecting apparatus wherein a liquid sample is drawn by suction when a sample needle is moved to a lower position and the liquid sample drawn by suction is fed into a chromatographic column by using a carrier solvent when the sample needle is moved to an upper position. The apparatus is provided with seal members capable of providing a satisfactory seal to the outer peripheral surface of the sample needle by utilizing the high pressure of the carrier solvent when the carrier solvent is allowed to flow through the bore of the needle. When the sample needle is moved between the two positions, the high pressure of the carrier solvent applied to the outer peripheral surface of the sample needle is removed to reduce the frictional resistance offered to the outer peripheral surface of the sample needle, to thereby facilitate the movement of the sample needle.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile