One-piece, dual-material suction cup

摘要

A one-piece, dual-material suction cup includes an inner face having a concave shape when the cup is inactive (that is, unattached to a surface) and an outer portion having a convex shape when the cup is inactive. The inner and outer portions are formed from different elastic materials. The characteristics of the outer material are selected to exhibit relatively high memory, elasticity and recovery to provide a biasing force on the inner face of the cup to increase the vacuum and enhance attachment. The characteristics of the inner material are selected to exhibit conformity, compliance and softness as compared to the outer material. Such characteristics enhance mating and sealing with a surface to which the cup is to be attached. The inner and outer portions are permanently bonded together to form the one-piece suction cup.