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US 9,038,457 B2Granted
Quadrupole responder for OQR-type gravity gradiometer
AssigneeGedex Inc.
InventorsJohn Barry French, Kieran A. Carroll
Life of this patent
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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.
Claims21
A quadrupole responder for an OQR-type gravity gradiometer comprising:
- (a) a housing;
- (b) a mass quadrupole positioned within the housing, said mass quadrupole having a pair of opposing quadrupole faces, and said mass quadrupole having a center of mass between said opposing quadrupole faces, and;
- (c) at least a pair of torsion spring flexures connecting each of said opposing quadrupole faces of said mass quadrupole to the housing, said torsion spring flexures providing an axis of rotation which passes through the center of mass of said mass quadrupole and through both spring flexures;
- wherein said torsion spring flexures are integral with said mass quadrupole.
1 more element
Dependencies are inferred from the claim text.