Printed wiring board enclosure

Claim 1

An enclosure adapted to contain an associated printed wiring board; said enclosure adapted for attachment to an associated relay; said enclosure comprising: a U-shaped member including at least a base and first and second opposite sides, each of said sides including at least an inner wall facing the inner wall of the opposite side; a cover adapted to engage said U-shaped member; a board receiving ledge formed in each of said inner walls, each of said board receiving ledges including a board receiving ledge wall parallel to said respective side and a board receiving ledge floor perpendicular to said respective side, said floors lying in a common plane, and said ledges adapted to receive said printed wiring board; at least one projection formed in each of said board receiving ledge walls, said projections deflected to permit said printed wiring board to pass and said projections restored following passage of said printed wiring board to retain said printed wiring board; an aperture formed in said printed wiring board; a first projection attached to said base; extending therefrom in a direction toward said cover and through said printed wiring board aperture; a second projection attached to said cover, extending therefrom in a direction toward said base and abutting said first projection; a fastener extending through said cover, said printed wiring board aperture, and said U-shaped member and engaging said relay to attach said enclosure to said relay while preventing the application of tightening stresses to said printed wiring board.