International Business Machines Corporation

Dean Fredrick Herring

Norman Bruce Desrosiers

William Fred Otto

John Robert Kirksey

Timothy Scott Bass

A system for fastening two parts at abutting surfaces by forming an in-situ fastener. A device selectively forms variable width through holes on two parts to be fastened, such that the width of each through hole is larger on the first surface than the opposing second surface. Opposing first and second platens selectively urge the second surfaces of the two parts into engagement while the through holes of the two parts are in fluid communication with each other. An injection system includes a flow passage through the first platen to the through hole on the part engaged by the first platen, and a pressurizing mechanism for urging the flowable and hardenable material through the flow passage and into the first and second through holes between the first and second platens under pressure. Pressure is maintained while the flowable and hardenable material hardens within the through holes.

System for fastening parts

A method forming a fastener in-situ for fastening two parts at abutting surfaces. A through hole may be formed on each of the first and second parts such that the diameters of the through holes at the abutting surfaces are smaller than the diameters at opposing surfaces. The first and second parts are abutted with the through hole on the first part in fluid communication with the through hole on the second part. A flowable and hardenable material is injected into the first through hole while closing flow out of the second through hole. The flowable and hardenable material contained within the through holes is allowed to harden, thus forming a unitary fastener that fastens the parts.

In-situ molded fastener

A blank for closing an input/output slot in the rear panel of a personal computer has an elongated body with a tab on one end and a flange on an opposite end. The body also has a large elliptical dome that protrudes rearward. A set of spring fingers extend along each side of the dome. The blank is installed in one of the input/output slots by first inserting the tab into a pocket below the slot. The dome is then pivoted into the slot until the fingers snap onto a pair of upright edges that define the slot. The blank is removed from the slot by pushing the dome in the opposite direction out of slot to overcome the flexible retention force provided by the fingers.

Growing community of inventors

Youngsville, NC, United States of America

Dean Fredrick Herring