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. 12, 1978
Filed:
Aug. 08, 1977
Alan Thomas Hayward, East Kilbride, GB;
Abstract
A fluid flowmeter of the venturi type is disclosed in which a throat is fed between complementary surfaces of a duct and a control member. Relative movement between the duct and the control member in response to the flow of fluid through the meter serves to enlarge the throat as the flow rate increases, and operation over a wide range of flowrates is thereby made possible. A measure of fluid flowrate can be obtained from fluid pressure measurements at the throat and at a position upstream thereof. An advantage over one prior art device is that the throat position remains substantially constant during relative movement of the complementary surfaces, so that sensing of the throat pressure is simplified.