Measuring and testing – Liquid level or depth gauge – Hydrostatic pressure type
Reexamination Certificate
2005-12-22
2008-11-18
Williams, Herzron D (Department: 2856)
Measuring and testing
Liquid level or depth gauge
Hydrostatic pressure type
C073S38200R, C073S38200R
Reexamination Certificate
active
07451645
ABSTRACT:
The present invention provides devices and methods for reducing or eliminating sources of systematic errors in the measurement of absolute gravity or gravity field gradients; specifically, an improved test mass for an interferometer is disclosed that reduces the influence of nearby electromagnetic fields on a freefalling test mass.
REFERENCES:
patent: 2150405 (1939-03-01), Scherbatskoy
patent: 3062051 (1962-11-01), Slater et al.
patent: 3413854 (1968-12-01), Graf
patent: 3500688 (1970-03-01), Hudson
patent: 3583226 (1971-06-01), Codina
patent: 5351122 (1994-09-01), Niebauer et al.
patent: 5892151 (1999-04-01), Niebauer et al.
patent: 6298722 (2001-10-01), Faller et al.
patent: 6606908 (2003-08-01), Johann et al.
patent: 2002/0036251 (2002-03-01), Johann et al.
patent: 2003/0136190 (2003-07-01), Araya
patent: 2005/0027489 (2005-02-01), Kasevich et al.
patent: 51059796 (1976-05-01), None
patent: 02126181 (1990-05-01), None
patent: 1831699 (1993-07-01), None
Crooks et al., Excess mechanical loss associated withteh dielectric mirror coating on the test masses in interferometric gravitational wave detectors, 2002, Institute of Physics Publishing, Classical Quantum Gravity 19,p. 883-896.
Y. Jiang et al., Optical properties of metallo-dielectric microspheres in opal structures, 2003, Institute of Physics Publishing, Journal Of Physics Condensed Matter 15, p. 5871-5879.
Schmitt et al., Particle design for displacement tracking velocimetry, 1995, Meas. Science Technology 6, p. 682-689.
Niebauer, T. M., et al. (1995)Metrologia32:159-180.
Billson Ryan M.
Klopping Fred J.
Niebauer Timothy M.
Valentine Jess G.
van Westrum Derek C. S.
Bellamy Tamiko D
Ley John R.
McCallum Jennifer M.
Micro-g LaCoste, Inc.
Williams Herzron D
LandOfFree
Test mass for gravimeters and gradiometers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Test mass for gravimeters and gradiometers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Test mass for gravimeters and gradiometers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4045310