Caltrop

Details Caltrop Caltrop

1997-06-25

1999-07-13

Neuder, William

Road structure, process, or apparatus

Traffic steering device or barrier

256 1, E01F 1302

Patent

active

059217030

ABSTRACT:
A rigid caltrop structure is formed of two metallic members abutting each other and welded together, each of the members including all of a single triangular planar portion and parts of two other adjoining triangular planar portions, the pairs of adjacent corners of sides of the triangular portions forming penetration points so that when three of the penetration points rest on a horizontal surface and the fourth penetration point projects upward, a force applied to that fourth penetration point will not directly tend to shear the weld.

REFERENCES:
patent: 1094226 (1914-04-01), Le Duc
patent: 2313388 (1943-03-01), McDonald
patent: 2346713 (1944-04-01), Walker
patent: 3387824 (1968-06-01), Jonas et al.

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