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:
Feb. 12, 1985
Filed:
Mar. 31, 1983
LeRoy F Grantham, Calabasas, CA (US);
Norman W Heath, Canoga Park, CA (US);
Rockwell International Corporation, El Segundo, CA (US);
Abstract
Means for ensuring the accuracy and reliability of fluid flow measurements when the fluid contains substantial quantities of entrained particulates, the measurements being taken with a pitot tube and a pressure-sensing means wherein the pitot tube is disposed in a duct through which the fluid flows and has at least one velocity pressure-sensing orifice facing the upstream direction of flow. The means includes a remotely controllable rotation means for interposing a barrier between the orifice and the upstream direction of flow when velocity pressure measurements are not being taken. In accordance with one embodiment the rotation means comprises a remotely actuated cover and in another embodiment the rotation means comprises means for rotating the tube whereby the orifice faces in a downstream direction when velocity pressure measurements are not being taken. There also is provided means for purging the orifice.