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. 01, 1997
Filed:
May. 24, 1995
Douglas W Ford, West Linn, OR (US);
Robert W Todd, Gresham, OR (US);
Quinn E Trammell, Gresham, OR (US);
Dennis A Higley, Oregon City, OR (US);
Optimize Technologies, Inc., Portland, OR (US);
Abstract
A valve (10) is used to introduce fluid from a syringe (22) into the inlet (88) of the pump of an HPLC instrument (12). The valve includes a valve body (14) that is connected to the HPLC instrument for fluid flow communication with the instrument inlet. A valve rotor (16) is rotatably engaged with the valve body. A collar fitting (18) included on the valve rotor is connectable to the syringe. The syringe acts as a valve lever, and is displaceable to rotate the valve rotor about an axis of rotation (32) between an 'off' position, in which fluid flow between the syringe and the HPLC instrument inlet is prevented, and an 'on' position, in which fluid flow between the syringe and the HPLC instrument inlet is permitted. The valve enables one-handed priming operation.