Patent ID: 9291742
Filing Date: 2016-03-22
CPC Classification: G01V,G04B

Claim Text:
1. A gravimeter for measuring a value of gravity, comprising: a first pendulum connected at a first suspension point to oscillate about the first suspension point in a first arc of oscillation under the influence of gravity and oscillation energy applied to the first pendulum; a first sensor associated with the first pendulum to sense a characteristic of oscillation of the first pendulum in the first arc of oscillation; a second pendulum connected at a second suspension point to oscillate about the second suspension point in a second arc of oscillation under the influence of gravity and oscillation energy applied to the second pendulum; a second sensor associated with the second pendulum to sense a characteristic of oscillation of the second pendulum in the second arc of oscillation; and wherein: the first and second suspension points are separated from one another; the first and second pendulums oscillate in a common plane at a relative 180° phase difference with respect to one another; and further comprising: a transfer coupling connected to the first and second suspension points and operative to transfer aligned mode energy between the first and second suspension points, the aligned mode energy constituting a component of energy which is aligned directly between the first and second suspension points and which is effective at the first and second suspension points.