Mobile device case with bonded soft resin insert and shell

A protective case, the protective case comprising:

• a frame comprising a planar frame base from which a plurality of frame sides extend thereby defining a frame cavity;
• and
• an elastomeric shell comprising a elastomeric shell cavity defined by a shell base from which a plurality of adjacent shell sides extend upwardly, wherein the plurality of adjacent shell sides comprise a shell inner surface and a shell outer surface, wherein the shell inner surface comprises a plurality of inner projections disposed at approximately even intervals, and the shell outer surface comprises a plurality of outer projections disposed at approximately even intervals, and a shell rim extending between the shell outer surface and the shell inner surface, wherein the elastomeric shell cavity is adapted to enclose a rear surface and a periphery of a mobile device;
• wherein the frame cavity is adapted to enclose the shell cavity such that the frame base is in contact with the shell base and the outer projections contact the frame cavity;
• wherein the plurality of inner projections each comprise a deformable inner extremity in the shape of a triangular ridge, wherein an apex of each triangular ridge is oriented toward the shell cavity such that the apex is adapted to contact the periphery of the mobile device;
• wherein the outer projections contact the frame sides and comprise an outer projection extremity extending outwardly from the shell cavity;
• wherein the inner projections and outer projections alternate along a length of each shell side.