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:
Jun. 27, 2000
Filed:
Apr. 28, 1998
Applicant:
Inventors:
Harold M Miller, South Chatham, MA (US);
Charles A Woringer, North Falmouth, MA (US);
Assignee:
Data Industrial Corporation, Mattapoisett, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01F / ; B63H / ;
U.S. Cl.
CPC ...
7386177 ; 7386187 ; 4162 / ;
Abstract
A flow sensor using induction pickup and having an improved paddle wheel type impeller within an impeller housing having a concave opening defining a protective skirt area for shielding a portion of the paddle wheel and a stem of the paddle wheel with a varying thickness for reducing cavitational backflow and therefore achieving a precise measurement of the fluid flow velocity and a high turndown ratio is disclosed.