Switched coil receiver antenna for metal detector

Details Switched coil receiver antenna for metal detector Switched coil receiver antenna for metal detector

2007-02-13

2007-02-13

Lefkowitz, Edward (Department: 2862)

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

For small object detection or location

C324S329000

Reexamination Certificate

active

10942153

ABSTRACT:
A pulse induction metal detector includes a pulse transmitter coil for generating and transmitting a first electromagnetic signal and a receiver coil for detecting and amplifying a second electromagnetic signal emitted by a nearby metal target due to eddy currents generated in response to the first electromagnetic signal. The receiver coil is a coil of wire having multiple loops. At least one switch is coupled with the coil of wire such that when the switch is in its open position, the coil of wire is a broken circuit. In this condition, the inductive properties of the receiver coil are minimized during abrupt transmitter coil turn off. The number of switches per coil loop can be varied to achieve varying levels of sensitivity.

REFERENCES:
patent: 972004 (1910-10-01), Marriott
patent: 1554328 (1925-09-01), Brenner
patent: 4358769 (1982-11-01), Tada et al.
patent: 5428363 (1995-06-01), D'Hont
patent: 6181249 (2001-01-01), Maitin et al.
patent: 6333723 (2001-12-01), Locke
patent: 6456079 (2002-09-01), Ott et al.
patent: 6636044 (2003-10-01), Candy
patent: 6653838 (2003-11-01), Candy
patent: 7030759 (2006-04-01), Nelson

Affiliated with

Also associated with

Rating

Switched coil receiver antenna for metal detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Switched coil receiver antenna for metal detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switched coil receiver antenna for metal detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3889996