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, 1987
Filed:
Mar. 05, 1986
Wieland E von Behrens, Chicago, IL (US);
Sequoia-Turner Corporation, Mountain View, CA (US);
Abstract
A method and apparatus for jetting a measured volume of a suspension of particulates such as blood cells or colloids into a single fluid-primed incompletely partitioned transducer chamber in such a way that the dynamic relationship between the priming liquid and the inflowing jet imparts to the suspended particulates the properties of a stable stream line monofile which reliably traverses one or more particulate-identifying and/or analyzing sensing zones. Said transducer chamber has one or more of the following three sources of energy for moving the contained fluids: an easily maintained non-critical pressure differential between the suspension inflow port and an exit line, potential energy stored within the transducer chamber during the priming step, a pump mechanism to propel particulate-free fluid. The measurement period in all such transducers may be defined by monitoring the volume of either the inflowing or displaced outflowing liquid.