Key switch

Details Key switch Key switch

1983-02-24

1984-06-05

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Permanent magnet-actuated switches

335207, H01H 900

Patent

active

044531486

ABSTRACT:
The key switch comprises a housing with at least one permanent magnet accommodated therein, the magnet being rigidly connected with the key and adapted to act, when the key is displaced, onto a switching member secured in the housing. Mounted in the housing intermediate the key and the magnet are means for retaining the key in its initial position, including a plate of a ferromagnetic material. The housing further accommodates the means for returning the key into the initial position, including at least one plate of a ferromagnetic material, arranged in the direction of the motion of the key with a gap relative to the permanent magnet and defining with the plate of the key-retaining means a magnetic circuit. The length of this at least one plate of the means for returning the key in the direction of the motion of the key is short of the sum of the value of the maximum displacement of the key and the extent of the permanent magnet in this direction.

REFERENCES:
patent: 3206573 (1965-09-01), Anderson et al.
patent: 3701064 (1972-10-01), Kinoshita et al.

Affiliated with

Also associated with

Rating

Key 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 Key switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Key switch will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1500490