Vacuum or pressure coupling devices

Claim 1

A coupling comprising: first and second plates in mating engagement along abutting surfaces, each of said plates having integral projecting sections provided with barbed means for respective attachment to tubular members, each of said plates having openings extending therethrough, which openings also extend through respective barbed sections for communication with the interior of said tubular members, said openings of said first plate being in communication with corresponding openings in the other of said plates, said abutting surface of said first plate being absent of projecting portions and having depressions defining tapered walls, each of said walls encircling at least one of said openings, said abutting surfaces encircling each of said depressions, said second plate having stiffly flexible relatively thin sealing means projecting from said abutting surface of said second plate and being inserted within said depressions of said first plate and in sealing registration with respective tapered walls, said sealing means being unitary with said second plate, said first plate having a plurality of recesses, and said second plate having a plurality of projecting pairs of resilient latching legs, each of said latching legs having a beveled surface latching section of tapered configuration, each pair of said latching legs being received in a recess of said first plate with said latching sections received through said first plate and retaining said first and second plates in mating engagement.