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:
Jul. 03, 1990
Filed:
Jul. 17, 1989
Steven O Buchanan, Rolling Prairie, IN (US);
Dwyer Instruments, Inc., Michigan City, IN (US);
Abstract
A target fluid flow indicator gauge comprising a non-magnetic housing defining inflow and outflow ports and a cross channel including a rounded portion that is curvilinear about an axial center that is coaxial with a fluid flow central axis through the gauge, with the channel rounded portion lying in a plane that extends normally of such axial centers and functions as a conduit for the fluid flow that is to be measured, a leaf spring adjustably and cantilever mounted in an upper portion of the housing chamber and adjacent one end of the spring, which leaf spring at the other end of same is fixed to a rigid lever arm that extends diametrically across the channel rounded portion, an orifice coaxial with said axis through which the fluid flow is directed into the chamber portion and defining a throat portion of novel configuration at the downstream end thereof that opens into the channel portion, with the lever arm mounting a target in centered relation within the orifice throat portion in coplanar, close fitting relation to the upstream end thereof, with the housing directing fluid flow into the channel against the target and out of the chamber in a predetermined fluid flow direction through the housing and the lever arm carrying a driving magnet assembly adjacent the target that is magnetically coupled to an externally located follower magnet assembly that acts to pivot an indicator pointer to provide an output that is linear over the range of the gauge.