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:
Jul. 17, 1984
Filed:
Dec. 07, 1982
Applicant:
Inventor:
Ronald B Walters, Wembley, GB;
Assignee:
Sperry Limited, Cobham, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F / ;
U.S. Cl.
CPC ...
7386155 ; 73197 ;
Abstract
In a flow sensing device in which flow is measured by the linear displacement of a moveable bobbin within a throat, the bobbin contains a cylinder and piston arrangement, with the piston linked to the same linear displacement sensing device as the bobbin. Fluid pressures upstream and downstream of a calibrated orifice parallel to the throat, is applied to opposite ends of the piston. Low flow rates are measured by the displacement of the piston, with movement of the bobbin together with the piston taking over the flow sensing function at higher flow rates.