Two-out-of-three logic terminal board

Claim 2

A terminal board for connecting first, second and third pairs of actuatable devices controlled respectively by first, second, and third monitoring devices into a two-out-of-three logic arrangement to apply power to an external load when at least two of said pairs of said actuatable devices are actuated comprising: an electrically insulated base including first, second, and third sections, each of said sections having a plurality of substantially parallel channels formed therein, the sides of said channels forming insulative dividers; a plurality of conducting strips, said strips being disposed one in each of said channels, each of said strips including at least one connecting terminal; a plurality of bus bars arranged transversely to said conducting strips and disposed in slots formed in said dividers, wherein said bus bars are located in a plane spaced above said strips and spaced below the plane defined by the tips of the dividers formed by said channels; and means for attaching said bus bars to said strips at selected points for interconnecting specified ones of said strips to effect a two-out-of-three logic arrangement of said actuatable devices.

Claim 3

A terminal board as defined in claim 1, wherein said conducting strips are grouped in three sets, each of said sets being mounted respectively on a different one of said sections of said base, each of said sets including only those conducting strips to be connected to a pair of actuatable devices which are actuated by a single monitoring device.

Claim 4

A terminal board as defined in claim 2, wherein each of said sets of conducting strips is provided with a separate insulative cover.

Claim 5

A terminal board as defined in claim 3, wherein each of said sets includes four conducting strips arranged in adjacent pairs, each of said pairs of strips being connected to opposing terminals of one actuatable device.

Claim 6

A terminal board for connecting first, second and third pairs of actuatable devices controlled by first, second, and third monitoring devices, respectively, in a two-out-of-three logic arrangement comprising: an insulative base having a plurality of channels, each channel having a conductor disposed therein and each conductor having a terminal at least at one end; and, each actuatable device interconnecting a pair of conductors at the terminal ends thereof; an insulative cover associated with each monitoring device and each pair of actuatable devices thereby dividing the terminal board into first, second and third sections, respectively; the covers overlying the conductors and removably attached to the insulative base whereby the first monitoring device and first pair of actuatable devices may be connected to the terminal board by removing only the first section cover; the second monitoring device and second pair of actuatable devices may be connected to the terminal board by removing only the second section cover; and, the third monitoring device and third pair of actuatable devices may be connected to the terminal board by removing only the third section cover; and, a plurality of bus bars sandwiched between the insulative covers and base interconnecting selected conductors to effect the two-out-of-three logic arrangement.

Claim 7

A terminal board for connecting first, second and third pairs of actuatable devices controlled by first, second, and third monitoring devices, respectively, in a two-out-of-three logic arrangement comprising: an insulative base having a plurality of channels, each channel having a conductor disposed therein and each conductor having a terminal at least at one end; and, each actuatable device interconnecting a pair of conductors at the terminal ends thereof; an insulative cover associated with each monitoring device and each pair of actuatable devices thereby dividing the terminal board into first, second and third sections, respectively; the covers overlying the conductors and removably attached to the insulative base whereby the first monitoring device and first pair of actuatable devices may be connected to the terminal board by removing only the first section cover; the second monitoring device and second pair of actuatable devices may be connected to the terminal board by removing only the second section cover; and, the third monitoring device and third pair of actuatable devices may be connected to the terminal board by removing only the third section cover; and, a plurality of bus bars sandwiched between the insulative covers and base interconnecting selected conductors to effect the two-out-of-three logic arrangement.