MICRO-G LACOSTE, INC. Patent applications |
Patent application number | Title | Published |
20150285069 | High Resolution Continuous Depth Positioning in a Well Bore Using Persistent Casing Properties - Continuous measurement indicia between casing collars of a pipe segment of a well bore casing is obtained from signals obtained by sensing innate, persistent and unaltered characteristics, e.g. magnetic permeability, of the pipe segment along its length, and using the signals to perform a downhole function, e.g. a gravity measurement, at an indicated location. | 10-08-2015 |
20150234088 | Pendulum Arm Flexure and Method of Construction - A pendulum arm flexure which supports a pendulum bob for oscillation has predictable and reproducible characteristics. Holders retain a specific predetermined length of uniform diameter elongated fiber at ends of the fiber and permit flexing only along a defined length of the fiber between the holders during oscillation. Energy conserving material of the fiber temporarily stores and releases energy when flexing. | 08-20-2015 |
20150234087 | Double Pendulum Gravimeter and Method of Measuring Gravity Using the Same - A double pendulum gravimeter accurately measures gravity by transferring aligned mode energy between suspension points of the pendulums to establish equal arcs of oscillation of the pendulums and by sensing oscillation characteristics to establish an accurate gravity value including a correction factor which depends on the arc of oscillation, while absorbing adverse mode energy. | 08-20-2015 |
20150177410 | Gradiometer and Method of Changing an Optical Path Length to Directly Obtain a Value of a Gradient of Gravity - A gradient of gravity is defined by a change in the optical path length required to maintain equality in optical path lengths of two beam arms which direct light beams to impinge upon and reflect from two freefalling test masses. | 06-25-2015 |
20140318239 | Interferometric Gravimeter Apparatus and Method - A gravity value is measured using two light beams which each reflect from both a freefall test mass and a stationary reference test mass which is inertially supported by a long period isolation device. The optical path lengths of the light beams change equally and oppositely in response to gravity and equally in response to disturbances, resulting in cancellation of the undesirable effects of the disturbances by common mode rejection and in a desirable increase in the number of gravity induced measurement fringes, when the two light beams are combined interferometrically. | 10-30-2014 |
20140268329 | Polarized Beam Director and Method - Incident differently-polarized light beams are separately directed and combined by one or two corner cube structures, each having one or two walls formed as a beam splitter. One incident light beam is passed, while the other incident light beam is reflected. | 09-18-2014 |
20140260605 | Polarized Beam, Matched Coincident Beam Path, Interferometric Gradiometer Apparatus and Method - A gravity gradient is measured interferometrically from two polarized light beams having mutually different polarization planes which reflect from opposite surfaces of two freefalling test masses. The two polarized light beams project along matched coincident beam paths and divert from the coincident paths to interact with the freefalling test masses. An enhanced level of common mode rejection of adverse influences arises from traversing the coincident beam paths. | 09-18-2014 |
20140026655 | Test Mass and Method for Interferometric Gravity Characteristic Measurement - A test mass used for light beam interferometric gravity characteristic measurement has a center of mass located equidistant and colinear with optical center points of two oppositely reflecting retroreflectors. Rotation of the test mass about its center of mass during freefall changes the path length of the oppositely reflected light beams by equal amounts, thereby achieving common mode cancellation of the effects of test mass rotation when the two reflected light beams are interferometrically combined. | 01-30-2014 |
20140026654 | Interferometric Differential Gradiometer Apparatus and Method - A differential gradient of gravity is directly measured from the interferometric combination of two light beams which reflect from pairs of three freefalling test masses. Optical path lengths of two beam arms change relative to one another because of differential gradient of gravity effects the test masses differently simultaneous freefall. The relatively large background of gravity and the gradient of gravity are eliminated from the measurement while simultaneously achieving a high level of common mode rejection of other spurious influences. | 01-30-2014 |