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. 23, 1986
Filed:
Feb. 01, 1984
Applicant:
Inventors:
Oscar Proni, Hollywood, FL (US);
Bobby D James, Hialeah, FL (US);
Assignee:
Coulter Electronics, Inc., Hialeah, FL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
324 714 ; 7386411 ; 7386434 ; 141 67 ;
Abstract
A particle analyzing apparatus and method of moving and counting particles in suspension through such an apparatus. The particle analyzing apparatus comprises a particle counting device wherein particles in suspension are caused to be moved through an aperture whose effective impedance is changed with the passage of each particle therethrough and a fluid connection means for drawing a quantity of the suspension through the aperture, including a source of vacuum. The source of vacuum comprises a bellows having an end, and a constant force means connected to the end of the bellows means.