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US 5,425,407 AGranted
Screw plug for tire punctures
OwnerVincent Archuleta, Edward Archuletainventors
Life of this patent
Estimating the term…
Abstract
A repair plug for sealable insertion into puncture holes in tires has a conical shank carrying one or more buttress threads which may extend onto a head portion adapted for rotation with a screwdriver.
Claims20
A threaded tire plug for sealable insertion into a puncture hole of a tubeless tire, comprising:
- a truncated conical shank having a longitudinal central axis extending through a larger diameter end and an opposing smaller diameter end comprising an insertion end;
- a truncated conical head portion having its smaller end integrally joined to said larger end of said shank and its larger end adapted to be rotatively driven by a screw-driving tool, said conical shank having an angle of taper from the surface of the conical shank to said central axis which is less than the angle of taper from the surface of the control head to said central axis;
- and
- external buttress screw thread integrally formed on an external surface of said shank between said larger end and said smaller end of said shank, said screw thread having an upper pressure face having a surface substantially perpendicular to said central axis in the radial direction, a lower buttress face having a surface intersecting an axial plane at 25 to 55 degrees from the axis, and a helical thread crest defining a continuously varying major buttress thread diameter which circumscribes the surface of a truncated cone;
- wherein said buttress thread extends from said shank to cover a portion of said head portion.
2 more elements
A threaded tire plug for sealable insertion into a puncture hole of a tubeless tire, comprising
- a truncated conical shank having longitudinal central axis extending through a larger diameter end and an opposing smaller diameter end comprising an insertion end;
- a truncated conical head portion having its smaller end integrally joined to said larger end of said shank and its larger end adapted to be rotatively driven by a screw-driving tool;
- external buttress screw thread integrally formed on an external surface of said shank between said larger end and said smaller end of said shank, said screw thread having an upper pressure face having a surface substantially perpendicular to said central axis in the radial direction, a lower buttress face having a surface intersecting an axial plane at 25 to 55 degrees from the axis, and a helical thread crest defining a continuously varying major buttress thread diameter which circumscribes the surface of a truncated cone, wherein said buttress thread extends from said shank to cover a portion of said head portion;
- and,
- circular ribs covering the surface of said shank between adjacent turns of said buttress thread, said ribs extending 0.001 to 0.08 inches from said shank surface and having a pitch between said buttress thread pitch and an equal pitch in the opposite screw direction.
2 more elements
Dependencies are inferred from the claim text.