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:
Jan. 10, 1995
Filed:
Feb. 07, 1994
Applicant:
Inventor:
James Doolittle, Kalispell, MT (US);
Assignee:
Semitool, Inc., Kalispell, MT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F / ;
U.S. Cl.
CPC ...
7386156 ;
Abstract
An improved electronic monitoring arrangement for a rotameter utilizes a single point source of radiation at one side of the rotameter and a vertical array of detectors diametrically opposite to it. The elevation of the radiation source is identical to the uppermost elevation of the radiation detectors. Radiation from the source will thereby intersect a common remote edge of the top surface of the float within the rotameter throughout its intended range of movement along the elevation covered by the array.