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:
Apr. 14, 1987
Filed:
Aug. 19, 1985
David A Stewart, Barrington, RI (US);
Other;
Abstract
A paddle-wheel-type flow measuring device comprises a housing having inlet and outlet passages therein, a paddle-wheel rotatably mounted in the housing, and a sensor for sensing the rate of rotation of the paddle-wheel in the housing. The inlet passage of the housing is positioned so that when a fluid flowing in substantially perpendicular relation to the axis of the paddle-wheel passes through the inlet passage, it impinges directly on only one end portion of the paddle-wheel and the outlet passage is positioned so that it can only directly receive fluid from the axially opposite end portion of the paddle-wheel. Hence, a fluid passing through the housing must circulate internally with the paddle-wheel before it can pass out the outlet passage so that a proportionally greater rotational force is applied to the paddle-wheel by the fluid. As a result, the device can be effectively utilized for measuring relatively low fluid flow rates, even in relatively small diameter pipe sections.