Proximity sensor device that determines at least one...

Electricity: measuring and testing – Magnetic – Displacement

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C324S229000, C324S239000

Reexamination Certificate

active

07148681

ABSTRACT:
A sensor device includes the ability to determine part presence and at least one physical characteristic of the part. A drive coil and sense coil are arranged so that a voltage applied across the drive coil causes a response in the sense coil, which is influenced by the presence of the item of interest. In a first mode, a controller determines whether the item is present by determining an amount of coupling between the drive coil and the sense coil, which is indicative of whether a part is present near the sense coil. In a second mode, the controller determines an amount of magnetic flux that is indicative of a thickness of the material. In another mode, constant current applied to the drive coil instigates a voltage across both coils. The amplitude of the sense coil voltage and a phase shift of the sense coil voltage relative to the drive coil voltage provides material thickness information.

REFERENCES:
patent: 3707672 (1972-12-01), Miller et al.
patent: 3763424 (1973-10-01), Bennett, Jr. et al.
patent: 4006405 (1977-02-01), Greenwood et al.
patent: 4425511 (1984-01-01), Brosh
patent: 4666027 (1987-05-01), Ostroski et al.
patent: 4737698 (1988-04-01), McMullin et al.
patent: 5283520 (1994-02-01), Martin et al.
patent: 6424145 (2002-07-01), Woolsey et al.
patent: 6602724 (2003-08-01), Redeker et al.
patent: 6617845 (2003-09-01), Shafiyan-Rad et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Proximity sensor device that determines at least one... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Proximity sensor device that determines at least one..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Proximity sensor device that determines at least one... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3719641

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.