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. 16, 1985
Filed:
May. 09, 1984
John Dimeff, San Jose, CA (US);
Other;
Abstract
An improved flow meter has a vertical chamber of relatively constant cross-section. In this chamber a float resides having a corss-section only slightly less than the cross-section of the chamber. Fluid is introduced at the bottom of the chamber and flows to the top of the chamber. The chamber top is provided with relief port outletting through a chamber throttle value. Similarly, a passage through the float has a float throttle valve. The chamber throttle valve controls the back pressure on the float and provides adjustability to the lifting of the float at various pressure levels. The throttle valve provides adjustability to the range of flow to which positioning of the float responds. A series of apertures configured along the sides of the chamber open as the float moves upwardly in response to increasing fluid pressure in the chamber below the float. The flow meter is digitally sensitive on an analog basis to changes in flow. One of the chamber walls can be formed from a printed circuit board which includes apparatus for sensing the position of the float as well as the flow meter apertures. Calibration of the float sensors to float position is obviated by this arrangement.