Manually controlled magnetic lifting device

Details Manually controlled magnetic lifting device Manually controlled magnetic lifting device

1979-10-29

1981-02-10

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Work or object holding type

335295, H01F 720

Patent

active

042504783

ABSTRACT:
The lifting device consists of an outer magnetic yoke and internal pole pieces forming an anchoring or working surface, with secondary permanent magnetic elements located between the yoke and the aforementioned pole pieces. There is also a reversible permanent magnetic element which may be rotated manually on a parallel axis to the said pole pieces, between an operative position in which its magnetic field is parallel to that of said secondary magnetic elements, and an inoperative position in which the magnetic field is short-circuited.

REFERENCES:
patent: 2471067 (1949-05-01), Hitchcock
patent: 2972485 (1961-02-01), Ferchland
patent: 3452310 (1969-06-01), Israelson
patent: 3978441 (1976-08-01), Sobottka et al.
patent: 4055824 (1977-10-01), Baermann

Affiliated with

Also associated with

Rating

Manually controlled magnetic lifting device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Manually controlled magnetic lifting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manually controlled magnetic lifting device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1667673