초록 ▼

A dowel fastener for frictionally engaging the sides of recesses, bores or apertures in wood, metal, and/or plastic joint members to hold the joint members together is disclosed. The dowel has a flexible, resilient, compressible tubular body with a spiral slot extending along its length. At least on

A dowel fastener for frictionally engaging the sides of recesses, bores or apertures in wood, metal, and/or plastic joint members to hold the joint members together is disclosed. The dowel has a flexible, resilient, compressible tubular body with a spiral slot extending along its length. At least one end of the dowel is tapered and preferably includes inwardly angled, segmented, end flanges terminating in a circular, free end edge of smaller diameter than said body. The flanges lead the dowel into a reduced width or diameter recess or aperture upon assembly into a joint. The opposite end may also be tapered for insertion in a similar recess or include an apertured, planar end preferably formed from bent end flanges for securing the dowel to a surface with a screw or other fastener. Preferably, the diameter of the free end edge of the tapered end or ends is sized to prevent compressive insertion in an aperture or recess which is too small and would otherwise cause deformation or failure of the dowel.

대표청구항 ▼

A dowel fastener for compressive insertion within apertures in joint members of wood, metal, or synthetic material to form a friction joint without permanent plastic deformation of the dowel comprising a flexible, resilient tubular body having a central axis, spiral slot, and two ends at least one o

A dowel fastener for compressive insertion within apertures in joint members of wood, metal, or synthetic material to form a friction joint without permanent plastic deformation of the dowel comprising a flexible, resilient tubular body having a central axis, spiral slot, and two ends at least one of which is tapered; said tapered end including at least one end flange formed in one piece with said body, extending inwardly toward said central axis at a predetermined angle and forming a circular free end edge of a second diameter less than that of said body; said slot extending from end to end along said dowel through both ends and said end flange; at least portions of the sides of said slot abutting one another upon sufficient compression of said dowel; said body being substantially uniform in diameter such that it presents a substantially uniform, cylindrical, exterior gripping surface for engagement with the sides of the joint apertures and being sufficiently flexible to allow only elastic movement of the sides of said slot toward one another without plastic deformation of said body to reduce the dowel diameter such that said dowel is compressible from its normal, uncompressed diameter for insertion in a smaller fastening aperture yet sufficiently resilient for secure frictional engagement of said exterior gripping surface with the sides of said fastening aperture.