Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Patent
1985-03-20
1986-09-02
Scott, J. R.
Electricity: circuit makers and breakers
Multiple circuit control
Multiple switch
200159B, 340365R, H01H 1370
Patent
active
046097929
ABSTRACT:
An encoding keyboard construction comprising a common input lead, a plurality N of output leads, and a plurality Y of key locations, each of which key locations has associated therewith aligned first and second contact sites defining a contact site pair, which contact sites are biased apart but can be moved into engagement with one another to establish contact therebetween. Each contact side pair includes three electrodes, one of which electrodes is connected to the common input lead, and each contact site includes at most two electrodes, each of which electrodes is connected to a respective single output lead. The output leads are each respectively connected to one or more selected contact sites such that, for each actuation of a key location, contact is effected between the contact sites of the contact site pair associated with such key location, which contact effects application of the signal present on the common input lead to a distinct pair of output leads, thereby effecting production of a distinct 2-of-N multi-bit output signal representative of such key location.
REFERENCES:
patent: 4347504 (1982-08-01), Murofushi et al.
patent: 4450324 (1984-05-01), Fukukura et al.
patent: 4484038 (1984-11-01), Durman et al.
patent: 4490587 (1984-12-01), Miller et al.
Coin Acceptors, Inc.
Scott J. R.
LandOfFree
Encoding keyboard does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Encoding keyboard, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Encoding keyboard will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1098906