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:
Nov. 06, 1979
Filed:
Apr. 03, 1978
Edwin Pounder, La Canada, CA (US);
Transdynamics, Burbank, CA (US);
Abstract
A transducer construction for sensing very low fluid flow rates by providing an extremely lightweight paddle wheel rotatable within a close fitting fluid chamber having inlet and outlet ports directed toward the paddle wheel with a minimum angular separation between the axes of the ports to insure maximum circumferential contact of the fluid with the paddle wheel as it moves around the fluid chamber. Rotation of the paddle wheel is sensed by means of a light source and photosensitive device placed on opposite end walls of the fluid chamber to detect the passage of the paddles of the paddle wheel therebetween. A modular form of the paddle wheel and photo detector assembly is disclosed.