Patent ID: 6896462

Claim:
A mechanical and adhesive fastener for joining parts at an interface, the fastener comprising: a connecting member having a connecting member head portion and a depending connecting member shank portion with a terminal end disposed about a centralized axis, said connecting member head and shank portions having a bore therein defined by an inner wall centered about said axis and an internal bottom surface in said connecting member shank portion, said bore extending from said bottom surface through said connecting member head portion, said inner wall having an internal helical thread winding about said axis, said connecting member shank portion having an external thread thereon for the threaded connection with at least one of the parts being joined, a driving member having a driving member head and a threaded driving member shank, said threaded driving member shank being threadedly connected with said internal helical thread of said connecting member shank portion and advanced therein to a point spaced from said bottom surface of said bore to thereby define a variable volume cavity in said connecting member shank portion, an adhesive disposed in said cavity, adhesive conducting passages leading from said cavity to the exterior of the shank portion of said connecting member, and a torque transmitting intermediate sleeve operatively mounted between the driving member head and the connecting member head portion for transmitting predetermined torque loads for driving said connecting member into at least one of said parts to thereby mechanically connect said parts together and then for collapsing to provide an adhesive seal between said connecting member head portion and said driving member head and to allow said driving member shank to enter said cavity to a position therein to thereby force said adhesive into said interface of said parts to adhesively connect said parts.