Patent ID: 6012888
Filing Date: 2000-01-11
Classification: F16B,Y10S

Abstract:
An adhesive fastener comprising, in combination:a fastener body having a cavity therein opening outwardly through a face surrounded by a flange which is to be adhered to a substrate upon dispensing adhesive from the body;an adhesive reservoir cup in said cavity opening outwardly at one end through said face and made of a material substantially non-reactive with the adhesive to be placed in the cup;said cup having a resilient annular mouth portion at said one end with a smooth cylindrical interior wall surface;a piston received in the mouth of said reservoir cup and having a circumaxial land mating with and sealed against said smooth cylindrical interior wall surface to prevent escape of adhesive from the cup;said piston having a passageway extending from said land to an end of the piston outside the cup; andsaid cavity having a wall portion encircling the resilient annular mouth portion of the cup in radially spaced relation therefrom to provide a gap therebetween into which said annular mouth portion may expand to prevent hydraulic lock before communication is established between the interior of the cup and said passageway.