Miniature freefall mechanism

Details Miniature freefall mechanism Miniature freefall mechanism

2006-11-13

2008-12-30

Chapman, John E (Department: 2856)

Measuring and testing

Gravitational determination

C073S38200R

Reexamination Certificate

active

07469585

ABSTRACT:
A system for measuring differential gravity at two points is disclosed. In the illustrative embodiment, the system uses a pair of graspers which each repeatedly grasp, raise, and drop a test mass. The accelerations of the two free-falling test masses are monitored using optical interferometry. An output signal is provided that is based on a differential acceleration of the two test masses.

REFERENCES:
patent: 3727462 (1973-04-01), Stone et al.
patent: 5892151 (1999-04-01), Niebauer et al.

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