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:
Jan. 19, 1999
Filed:
Aug. 20, 1997
Nehemiah Hemi Sagi, Carmel, IN (US);
Guosen Ronald Zhang, Indianapolis, IN (US);
Ranajit Rana Ghosh, West Lafayette, IN (US);
Other;
Abstract
An intelligent leak test and gas flow measurement apparatus having a body with a conical bore, a center shaft positioned in the conical bore to form a laminar flow gap bounded by the surface of the conical bore and the center shaft, a precisely machined spacer at the second end portion of the body for positioning the center shaft within the conical bore, a pressure differential sensor in contact with the laminar flow gap. A temperature sensor for determining the temperature of the gas flowing through the laminar flow gap is located on a columnar housing and a static pressure sensor for measuring the static pressure is located within the columnar housing. A microcontroller connected to the pressure differential sensor, the temperature sensor and the static pressure sensor, which microcontroller uses embedded software to calculate gas flow measurements and leak detection. An inlet end cap is attached to the first end portion of the body and an outlet end cap is attached to the second end portion of the body to enclose the center bore of the body and the center shaft.