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. 10, 1998
Filed:
Nov. 13, 1996
Frank R Shu, La Habra, CA (US);
Daniel J Wilson, Quail Valley, CA (US);
Bradley A Butcher, La Verne, CA (US);
Beckman Instruments, Inc., Fullerton, CA (US);
Abstract
An ion selective electrode assembly is provided having a sample injection cup, a flow cell analyzer and multiple module pump for simultaneously pumping liquids between the sample injection cup and the flow cell analyzer using a single motor. One of the pump modules is capable of pumping a reference solution directly to the flow cell analyzer. Flow through each pumping module is controlled by a pair of rocker valves. The sample injection cup includes a first diaphragm valve for allowing a mixture of sample and reagent to flow to the flow cell analyzer. The sample injection cup further includes a second diaphragm valve installed immediately downstream of the first diaphragm for allowing a flushing solution to flow throughout the sample injection cup and the flow cell analyzer.