Device for detecting interfering pieces in material to be...

Details Device for detecting interfering pieces in material to be... Device for detecting interfering pieces in material to be...

2007-10-23

2007-10-23

Aurora, Reena (Department: 2862)

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

C324S326000

Reexamination Certificate

active

10633227

ABSTRACT:
A device for producing a detection signal when interfering, preferably metallic conductive pieces occur in an at least largely non-conductive conveyor stream. An alternating electromagnetic field is built up by an alternating current generator through a transmission coil in a segment of the conveyor stream to be monitored. The changes in amplitude and phase of the alternating electromagnetic field are detected by a coil system that feeds an evaluating circuit for deriving the detection signal, which, when an interfering piece appears, causes a stoppage of the conveyor stream for the purpose of removing the interfering piece. A resetting device (reset button) is also provided which is able to cancel the conveyor stoppage. A device is also provided for blocking the resetting device, controlled by the evaluating circuit, which disables the resetting device as long as the evaluating circuit still emits a detection signal.

REFERENCES:
patent: 4700139 (1987-10-01), Podhrasky
patent: 5426362 (1995-06-01), Ninnis
patent: 5929634 (1999-07-01), Artinger
patent: 43 42 826 (1995-06-01), None
patent: 195 21 266 (1997-02-01), None
Klaus Beuth, “Digitaltechnick,”Elektronik 4, 10thEd., published by Vogel Buchverlag, pp. 51.
E. Hölzler and H. Holzwarth, “Theorie und Technik der Pulsmodulation,” Springer-Verlag, 1957, pp. 194-197.

Affiliated with

Also associated with

Rating

Device for detecting interfering pieces in material to be... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for detecting interfering pieces in material to be..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for detecting interfering pieces in material to be... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3838141