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:
Apr. 27, 1976
Filed:
Apr. 10, 1975
Tadeusz M Drzewiecki, Silver Spring, MD (US);
Francis M Manion, Rockville, MD (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
A laminar fluidic device for sensing fluid properties that affect viscosity s disclosed, the device comprising a source of supply for directing a jet of fluid outwardly from a nozzle, a pair of control channels disposed on opposite sides of the jet of fluid for deflecting the jet in response to a difference in the resistence of one control channel with respect to the other control channel, such resistence difference effecting a pressure differential across the jet, a pair of output channels for receiving the jet of fluid in accordance with the deflection thereof, and vent means disposed between the nozzle and the output channels. Each of the control channels normally exhibits channel resistence equal to the jet edge resistence and this normal channel resistence is brought about through a preselection of the control channel length, which length is contemplated to be approximately 70 times the width of the nozzle.