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. 02, 1990
Filed:
Aug. 29, 1988
Applicant:
Inventor:
Donald C Young, Pangbourne, GB;
Assignee:
Thorn EMI plc, London, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 3 / ;
Abstract
A device for measuring fluid density, the device comprising a silicon substrate having a micro-engineered cantilevered beam fabricated on it for use as a density sensor. The beam is at the end of a tube and has a contact manufactured on its end and a contact manufactured on the substrate below the contact. Means for causing said structure to vibrate and for detecting a characteristic of the vibration are provided, the characteristic being dependent on the density of the fluid to be measured.