also is tapered and optionally inclined application_number US 96408692 A description throughout this application similar reference numerals refer to similar elements in all figures of the drawings with reference to fig2 a shown is a latching projection p 39 in accordance with this invention the latching projection p 39 is formed on the housing h 1 that is to be mated with a housing h 2 having an aperture a therein as shown in fig1 the latching projection p 39 is improved in that the working surface s p2 defining the exit ramp is tapered in a direction that is generally parallel with respect to the latching direction m and to the unlatching direction w the free edge of the surface s p2 is spaced the height h above the surface r 1 the working surface s p2 is sloped in the x z plane at the slope angle m e to the surface r 1 by 34 tapered 34 it is meant that the edge e p of the sloped working surface s p2 does not lie on the reference surface r 1 in an orientation that is perpendicular to the latching or unlatching direction m or w but instead lies on the reference surface r 1 in an orientation defining a predetermined angle b in the x y plane with respect to the latching or unlatching direction m or w the angle b may have any convenient value that is less.