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:
Dec. 14, 2010
Filed:
Aug. 27, 2007
Applicants:
Frank Joachim Van Kann, Nedlands, AU;
John Winterflood, Nedlands, AU;
Inventors:
Frank Joachim Van Kann, Nedlands, AU;
John Winterflood, Nedlands, AU;
Assignee:
Technological Resources PTY. Ltd., Melbourne, Victoria, AU;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A gravity gradiometer is described which comprises a pair of sensor bars arranged in housings. Transducers are arranged adjacent the bars for measuring movement of the bars in response to the gravity gradient tensor. At least one of the transducers has a sensing coil and a capacitor plate having a concentric arrangement with the sensing coil for providing one plate of a capacitor used in a balancing circuit for measuring the balance of the sensor mass.