US Patent 7686660 Connector and receptacle therefor

An assembly (10) comprises a receptacle (12) having a base (14) including a single longitudinal row (16) of male connector pins (18) extending above and below the base. First wall and second walls (20, 22) project above the base (14) and have similar heights but differing widths, W and W1. The first wall and the second wall are spaced differing distances D and D1 from the single row of pins (18). A connector (24) with a central body (26) is formed to engage the receptacle (12) by mating with the uneven walls W and W1 and the asymmetric spacing of the pins (18). The uneven walls and the asymmetrical spacing of the pins (18) from the walls provide plural asymmetries assuring a positive alignment for the pieces of the assembly (10).