Measuring and testing – Speed – velocity – or acceleration – Acceleration determination utilizing inertial element
Reexamination Certificate
2006-09-05
2008-03-25
Kwok, Helen (Department: 2856)
Measuring and testing
Speed, velocity, or acceleration
Acceleration determination utilizing inertial element
C073S514310
Reexamination Certificate
active
07347097
ABSTRACT:
A servo compensating accelerometer includes a top housing half and a bottom housing half rigidly connected together, and each having coaxial threaded openings. A sensing element is positioned between the top and bottom halves and affixed to the bottom half. Top and bottom magnetic systems, each of which has a magnetic conductor, a permanent magnet and a field concentrator, the magnetic systems being mounted within the respective top and bottom halves of the housing using the threaded openings. A momentum sensor includes the top and bottom magnetic systems, and also includes two movable coils mounted on a plate and positioned within the magnetic systems. A differential angle sensor includes toroidal excitation coils located on the permanent magnets, the magnetic systems and the coils of the momentum sensor. Zero bias of the accelerometer's angular displacement sensor is tuned by adjusting the position of the magnetic systems by moving them in the threaded openings. Stop screws can be used to fix position of the magnetic systems relative to the top and bottom halves of the housing. Two perpendicular mounting surfaces are located on the bottom half of the housing. An electrical circuit that includes a preamplifier, a demodulator, a correcting element, a high frequency generator, an amplifier, the excitation coils and the movable coils, which collectively form a feedback circuit, and generate an output of the accelerometer using an inductor, a resistor, a capacitor and a filter. The sensing element, in one embodiment, can be metallic.
REFERENCES:
patent: 3513711 (1970-05-01), Rogall
patent: 4320669 (1982-03-01), Grohe
patent: 4357837 (1982-11-01), Beardmore
patent: 4397185 (1983-08-01), Craig et al.
patent: 4498342 (1985-02-01), Aske
patent: 4771792 (1988-09-01), Seale
patent: 6073490 (2000-06-01), Konovalov
patent: 0323709 (1989-07-01), None
Search Report in EP 07250845, issued on May 31, 2007.
Chernyak Mykola G.
Skrypkovskyy Gennadiy A.
Bardmesser Law Group
Innalabs Technologies, Inc.
Kwok Helen
LandOfFree
Servo compensating accelerometer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Servo compensating accelerometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Servo compensating accelerometer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3979412