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:
Aug. 02, 1994
Filed:
Jul. 16, 1992
Norman Kelln, Spokane, WA (US);
Kelsey Loughlin, Spokane, WA (US);
Schiapparelli Biosystems, Inc., Fairfield, NJ (US);
Abstract
A liquid transfer module for a chemical analyzer is adequate to effect liquid transfers between multiple stations arranged in a common arc about a vertical axis on a supporting instrument framework. A rigid radial probe arm supporting a vertical pipette is fixed to a tubular shaft supported on the framework for both rotational and elevational motion relative to the vertical axis. It is surrounded by a powered pulley that imparts angular movement to the shaft. It is elevationally carried by a non-rotating bearing assembly arranged coaxially about the axis on a nut threadably engaged by a powered lead screw extending within the confines of the shaft. Both the elevational and angular positions of the shaft are electronically monitored.