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:
Dec. 01, 1998
Filed:
Jan. 29, 1997
Amer El-Hage, Menlo Park, CA (US);
Rick V Stellmacher, Cupertino, CA (US);
LJL Biosystems, Sunnyvale, CA (US);
Abstract
A method of producing a probe for aspirating and dispensing liquid. A fluid conduit and rod are positioned in the central bore of a tube so that an inlet end of the conduit and a contact end of the rod protrude from an upper end of the tube and a discharge end of the conduit and a sensing end of the rod protrude from a lower end of the tube. The tube has a heat-shrinkable outer layer and a meltable inner layer. The tube is heated so that its outer layer shrinks and its inner layer melts to encapsulate middle portions of the conduit and rod. A circuit board having first and second traces and first and second holes is placed on the upper end of the tube so that the inlet end of the conduit is inserted through the first hole and the contact end of the rod is inserted through the second hole. The conduit and rod are attached to the board so that the conduit is electrically connected to the first trace and the rod is electrically connected to the second trace. First and second conducting pins are also attached to the board. The conducting pins electrically connect the traces to a voltage sensing circuit when the probe is attached to a probe positioning device.