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. 09, 1977
Filed:
Apr. 22, 1976
Henry Howard Gulliford, St. Albans, EN;
Harvey John Dunstan, St. Albans, EN;
Coulter Electronics, Inc., Hialeah, FL (US);
Abstract
Method and apparatus for providing a concentration study of particles in a large system of continuously flowing fluid which is coupled to a sampling chamber that has a detector of the Coulter type therein. A regulator is provided to maintain constant the pressure in the sampling chamber irrespective of pressure changes in the large system. The regulator establishes a boundary surface between fluid from the sampling chamber and a column of liquid, such as mercury, immiscible with said fluid and of greater density than said fluid; whereby, a predetermined pressure is produced at said surface and permits sample fluid to pass through said column liquid as the pressure on the fluid variably exceeds the pressure at the boundary surface.