Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnetostrictive-type device
Reexamination Certificate
2007-12-25
2007-12-25
Barrera, Ramon M. (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnetostrictive-type device
C073S862690
Reexamination Certificate
active
11490324
ABSTRACT:
A shock sensor has a housing with a Terfenol-D type sensing element positioned inside a sensing coil. A permanent biasing magnet is positioned in engagement with the Terfenol-D sensing element, and a spacer engages the Terfenol-D sensing element and extends from the housing. The housing has a beam with one or two mounting holes through which fasteners extend to mount the shock sensor to a structural member. The housing places the spacer in compression against the structural member. In an alternative embodiment a DC current can be supplied to the sensing coil to provide the biasing magnetic field. A high frequency filter separates the shock sensing signal from the applied DC biasing current.
REFERENCES:
patent: 3945459 (1976-03-01), Oishi et al.
patent: 4284863 (1981-08-01), Breed
patent: 4308474 (1981-12-01), Savage et al.
patent: 4342228 (1982-08-01), Savage
patent: 5275049 (1994-01-01), Schiessle et al.
patent: 5580084 (1996-12-01), Gioutsos
patent: 5767766 (1998-06-01), Kwun
patent: 5983724 (1999-11-01), Yoshida
patent: 6037682 (2000-03-01), Shoop et al.
patent: 6329910 (2001-12-01), Farrington
patent: 6389911 (2002-05-01), Aoki
patent: 6587048 (2003-07-01), Bomya
“Back in Style: Magnetostrictive Sensors”, by Dr. Hegeon Kwun, Technology Today, Sep. 1991, 9pp.
“Better Sonar Driven by New Transducer Materials”, by Charlie Bright, ST Sonar Feature, 4pp.
“Terfenol Basics”, web page printout, http://www.terfenoltruth.com/basics/, Oct. 13, 2003, 1p.
“Vehicle Crash Testing using the LogBook/300”, Application Note #38, Iotech, Inc. 3pp.
“RDP Electronics & MTS Temposonics Transducers Principle of Operation”, RDP Group, website printout, www.rdpelectronics.com/displacement/magneto/principle.htm, May 1, 2002, 1p.
“Terfenol-D Sensor Design and Optimization”, by Frederick T. Calkins and Alison B. Flatua, Aerospace Engineering and Engineering Mechanics Dept., Iowa State University, Ames, IA 50011, 10pp.
Sensor Technology Review MsS Overview: Diagram, 1p.
Barrera Ramon M.
Drayer Lonnie
Key Safety Systems, Inc.
LandOfFree
Magnetostrictive stress wave sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetostrictive stress wave sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetostrictive stress wave sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3851606