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:
Dec. 25, 1984
Filed:
Nov. 29, 1982
Robert J deFasselle, Gates Mills, OH (US);
Craig R deFasselle, Willoughby, OH (US);
Other;
Abstract
A flowmeter for measuring the flow rate of a liquid or gaseous media is disclosed. The flowmeter comprises a body portion including an inlet and an outlet. A fluid path extends between the inlet and the outlet. A core tube is disposed vertically within the body portion and a recessed groove is defined by the core tube. The groove extends longitudinally relative to the core tube and a first piston is movably disposed within the core tube and disposed adjacent the groove. A cross sectional area of the fluid path is defined by the groove and the first piston, the cross sectional area of the fluid path being variably dependent upon the longitudinal disposition of the first piston relative to the groove. A cover tube is disposed adjacent the body portion and in fluid communication with the fluid path. A second piston is disposed within the cover tube and is connected to the first piston by a connecting means enabling the first and second pistons to move in unison. A first and a second side of the second piston are immersed in a static fluid enabling controlled damping of the first piston and an indicator cooperating with the second piston indicates the position thereof relative to the cover tube. An embodiment is disclosed for measuring gaseous flow in which the indicator is operative within a range dependent upon the buoyancy of the connecting means immersed in the static fluid.