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US 10,889,953 B1Granted
Drill stake and accessories for concrete form construction
AssigneeIDIZ Limited
InventorJay R. Buse
Life of this patent
Estimating the term…
Abstract
Embodiments of the invention are stakes for securing concrete-casting forms to the ground (e.g., compacted earth and compacted gravel surfaces), which can be inserted and removed easily by using an impact drill or hammer drill. Modular concrete casting forms and other accessories are also described and claimed.
Claims20
A securing stake suitable for setting in compacted earth or gravel surfaces, comprising:
- a tubular steel body having a lower end, an upper end, and a plurality of fastener holes along its length, said plurality of fastener holes formed perpendicularly to an axis of the tubular steel body;
- a concrete drill structure coupled to the lower end, said concrete drill structure having helical twisted flutes along its length and a plurality of tough cutters at its lower end;
- a polygonal prism having a threaded hole therethrough coupled to the upper end, an axis of the threaded hole aligning with an axis of the tubular steel body;
- and
- a threaded bolt having a head and a shank, said shank screwed into the threaded hole, wherein
- the plurality of fastener holes are spaced apart along a length of the tubular steel body, at radially varying angles therethrough, between the polygonal prism and the concrete drill structure.
3 more elements
Dependencies are inferred from the claim text.