Method and apparatus for detecting broken sewing needles in sewn

Details Method and apparatus for detecting broken sewing needles in sewn Method and apparatus for detecting broken sewing needles in sewn

1997-05-08

1999-07-13

Snow, Walter E.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

324226, 209567, G01N 2772, G01R 3312, D06H 314, G01U 300

Patent

active

059231653

ABSTRACT:
Disclosed are a method and apparatus for detection of a magnetic substance erroneously included in a non-magnetic product. The non-magnetic product such as a sewn product is passed through a high magnetic field in which a magnetic field is applied to the product. The residual magnetization of a magnetic substance such as a broken needle mingled in the product is detected by a sensing unit and a signal of detection is transmitted to a measuring unit to measure the magnitude of detected residual magnetization. The presence or absence of the magnetic substance in the product is determined by a control unit based on the output from the measuring unit. Alternatively, a magnetic field may be preparatorily applied to a magnetic substance having the possibility of being mingled in the non-magnetic product thereby causing the magnetic substance to assume a state of possessing residual magnetization.

REFERENCES:
patent: 4734643 (1988-03-01), Bubenik et al.

Affiliated with

Also associated with

Rating

Method and apparatus for detecting broken sewing needles in sewn does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for detecting broken sewing needles in sewn, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for detecting broken sewing needles in sewn will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2278700