Electricity: magnetically operated switches – magnets – and electr – Permanent magnet-actuated switches – Plural switches
Patent
1977-05-13
1979-01-30
Truhe, J. V.
Electricity: magnetically operated switches, magnets, and electr
Permanent magnet-actuated switches
Plural switches
323 94H, 336110, H01H 3600
Patent
active
041375122
ABSTRACT:
A contactless magnetic switch is provided by utilizing at least one pair of hollow elongated tubular magnetic sensing elements which are each threaded with at least one sense wire and a movable permanent magnet which is positioned adjacent and over the sensing elements. The magnet has two straight edges which in a nominal zero position of the switch extend along the longitudinal axes of the sensing elements, preferably for a distance which is slightly longer than their lengths. The magnet is carried in a revolvable or otherwise movable carrier. If the carrier is revolvable, the magnet may be shaped as part of a circular disc and the two tubes may have their longitudinal axes disposed at an angle relative to each other so that when the permanent magnet is rotated in one direction from the initial zero position, one of the sensing elements will lie completely under the magnet while the other will be removed from the magnet and not affected by it. Thus, the sensing element under the magnet will be substantially completely saturated, thereby providing a low output voltage on its associated sense winding while the other sensing element will be substantially unsaturated thereby supplying a high output voltage on its sensing winding. As the permanent magnet is rotated in one direction or the other over the sensing elements, a sharp transition of the saturation state of the sensing elements provides the desired switching function.
REFERENCES:
patent: 3060291 (1962-10-01), Clare
patent: 3476997 (1969-11-01), Otzipka et al.
patent: 3958203 (1976-05-01), Bernin
patent: 3988710 (1976-10-01), Sidor et al.
Beart Robert W.
Bowen Glenn W.
Illinois Tool Works Inc.
Tone D. A.
Truhe J. V.
LandOfFree
Contactless magnetic switch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Contactless magnetic switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Contactless magnetic switch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1152921