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US 5,549,431 AGranted
Tube screw fastener
OwnerIan A. Royleinventor
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Abstract
A threaded tubular fastener having an elongated central through-bore having engaging means for engaging said through-bore with a rotary device having a rotary driver, a generally cylindrical body having an external surface with a main external thread formed thereon with a plurality of slots, said thread being larger than the diameter of a pre-drilled hole in a first work piece and a second mating work piece wherein the said threaded tubular fastener is employed to fasten the first work piece to the second work piece.
Claims10
A threaded tubular fastener in combination with a rotary driver device configured to impart torque to said fastener comprising:
- a) a tubular fastener comprising;
- i) a generally cylindrical body having an external surface with a main external thread formed thereon with a plurality of external axial flutes:
- ii) an elongated central through-bore;
- an
- iii) engaging means for engaging said rotary driver positioned in said through-bore comprising a plurality of internal axial slots;
- b) rotary driver means for threading said tubular fastener into apertures of a first work piece and second work piece-bore comprising:
- i) a torque applying means at one end;
- and
- ii) an interengaging means at an other end comprising a plurality of axial ribs for engagement with said internal axial slots, wherein the said threaded tubular fastener is employed to fasten the first work piece to the second work piece.
6 more elements
Dependencies are inferred from the claim text.