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US 11,274,695 B2Granted
Expanding, anchoring screw
AssigneeEVE Ventures LLC
InventorAdam Benjamin Tannenbaum
Life of this patent
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Abstract
The invention is an expanding, anchoring screw, made of expandable polymer material. The screw shaft is hollow. After inserting screw in a material, by allowing two reagents to mix in the hollow shaft, and a polymerization chemical reaction to occur, the reagents increase in volume exerting pressure against the inner surface of the hollow shaft, expanding the shaft, and applying greater anchoring force against material in which the screw is inserted.
Claims4
An expanding screw system comprising:
- a screw head disk portion;
- a cylindrical threaded shaft portion;
- a tail-end portion;
- said cylindrical threaded-shaft portion has an internal cylindrical coaxial hollow portion;
- said screw head disk portion has an aperture centered and perpendicular to said disk portion and concentric with said internal cylindrical coaxial hollow portion;
- all portions comprise expandable polymer material;
- said internal cylindrical coaxial hollow portion has an encapsulated first reagent;
- said internal cylindrical coaxial hollow portion has an encapsulated second reagent;
- and
- said encapsulated second reagent located adjacent to said first reagent.
7 more elements
Dependencies are inferred from the claim text.