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:
Jun. 19, 2012
Filed:
Oct. 23, 2009
Applicants:
John Barry French, Oakville, CA;
Kieran A. Carroll, Brampton, CA;
Inventors:
John Barry French, Oakville, CA;
Kieran A. Carroll, Brampton, CA;
Assignee:
Gedex Inc., Mississauga, Ontario, CA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A quadrupole responder for an OQR-type gravity gradiometer comprises a housing, and a mass quadrupole positioned within the housing. The mass quadrupole has a pair of sides, and also has a center of mass between the sides. At least a pair of torsion spring flexures are provided by pins connecting said side of said mass quadrupole to the housing. The torsion spring flexures provide an axis of rotation which passes through the center of mass of the mass quadrupole and through both spring flexures. The pins are integral with the mass quadrupole.