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:
May. 21, 1985
Filed:
Oct. 27, 1982
Richard W Miller, Foxboro, MA (US);
The Foxboro Company, Foxboro, MA (US);
Abstract
A target flowmeter includes a target body with an aperture through its impact surface, to equalize the forces generated on the target under both laminar and turbulent fluid flow conditions, as well as in the transition region therebetween. In a particular embodiment, the target body has an annular shape and is centered about the pipe center line, the size of the aperture being such that the target is acted upon by only those portions of the laminar and turbulent flow profiles having substantially similar shapes. Since the annular body is unaffected by the high velocity peak of the parabolic laminar profile, the force versus velocity relationship in the laminar flow range is approximately the same as in the turbulent flow range. This results in a more consistently accurate flow velocity measurement across the two flow regimes. Specific dimensional relationships between the size of the aperture and that of the pipe serve to optimize these results.