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:
Sep. 26, 1978
Filed:
Jul. 25, 1977
Peter J Herzl, Morrisville, PA (US);
Warren Strohmeier, Warminster, PA (US);
Fischer & Porter Co., Warminster, PA (US);
Abstract
A flowmeter of the vortex type in which an obstacle assembly mounted in a flow tube causes vortices to be shed at a frequency that is a function of flow rate. The assembly includes a block fixedly mounted across the flow tube at right angles to the direction of flow, the block having a substantially square cross-section to present a flat face to the incoming fluid. The width of the block has its maximum value at the mid-point thereof and diminishes gradually toward either end where the width assumes its minimum value such that the upper and lower faces of the block are bellied and the front face has a double-convex contour. The maximum width value affords an efficient shedding action, the mean width value of the block being significantly smaller than the maximum value to substantially reduce the pressure drop produced by the meter.