Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Patent
1977-02-16
1978-08-15
Grieb, William H.
Electricity: circuit makers and breakers
Multiple circuit control
Pivoted contact
35 30, 200 46, G09B 110
Patent
active
041062167
ABSTRACT:
Positioning system for coupling one or more members to a base, which may be used, for example, in an educational device including a mounting board and plates with numbers or letters thereon to be coupled to the board in predetermined positions. The plates and the board have connecting portions arranged in a binary code so that each plate can be placed in only a desired position. The connecting portions can be a plurality of pins on each plate and openings in the board, which are coded to represent the digits of a binary code. Each portion can have one of two configurations which represent the binary "0" and "1" digits of the code. The portions can have the same cross sections, with portions representing "0" digits rotated with respect to portions representing "1" digit, or the "0" digit portions can be displaced with respect to the "1" digit portions.
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