Static structures (e.g. – buildings) – With piercing or expanding earth anchor – Spreader cam or plate
Patent
1991-06-28
1993-04-20
Scherbel, David A.
Static structures (e.g., buildings)
With piercing or expanding earth anchor
Spreader cam or plate
52162, 52293, 52742, 47 55, E04G 2302, E02D 574
Patent
active
052031276
ABSTRACT:
An expandable earth anchor is provided with pivoted arms that remain contracted about a bolt rod as the rod, together with the anchor, is driven into the earth. Rotation of the rod with respect to the anchor induces an initial degree of expansion by rotation of the anchor arms about their pivot connection, followed by full expansion of the arms induced by movement of the bolt rod as a result of rotation of a bearing nut against a plate. Arrangements are provided for the expansion of a plurality of anchor devices on a single bolt rod, rendering the system suitable for various types of soils.
REFERENCES:
patent: 809032 (1906-01-01), Swortfiger
patent: 4453845 (1984-06-01), Donan, Jr.
patent: 4970835 (1990-11-01), Harmon
Duncan Charles L.
Harmon Rick A.
Nichols, Jr. Wayne L.
Olthoff John R.
Scherbel David A.
Wood Wynn
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