Electricity: circuit makers and breakers – Weight – Treads
Patent
1993-07-29
1994-12-13
Scott, J. R.
Electricity: circuit makers and breakers
Weight
Treads
H01H 302
Patent
active
053731280
ABSTRACT:
A wheel sensing treadle of high sensitivity includes a thin membrane strip having a top non-conductive membrane and a bottom non-conductive membrane, the membranes being generally parallel, spaced apart, and of extended length. A large number of switches are closely positioned along the length of the membranes. Each switch includes two thin conductive contacts formed respectively on each membrane by printing with conductive ink. A similarly-printed electrical lead connects respectively to each the switch contacts. The membrane strip is sandwiched between a rigid base and a resilient cover to form a treadle of extended length. The switch contact leads are connected in an X Y matrix, each switch having one contact connected to an X line and the other contact of the switch connected to a Y line of the matrix whereby each switch in the treadle has a unique X, Y address and can be rapidly an repetitively scanned by a computer.
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Treadle Selection Guide, The Revenue Markets, Inc.; Accord, New York (Promotional Brochure); (no date).
Emerick John G.
Rosakranse Robert A.
Scott J. R.
The Revenue Markets, Inc.
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