Static structures (e.g. – buildings) – Frangible section or means
Patent
1978-08-08
1979-12-18
Leppink, James A.
Static structures (e.g., buildings)
Frangible section or means
52161, 52515, 85 1C, E02D 574
Patent
active
041787269
ABSTRACT:
A releaseable telescoping device for protecting the threads of a rod of an earth anchor against corrosion is shown. The releaseable telescoping device has a plurality of sheath sections of dissimilar radii connected by small radially extending flanges therebetween to resemble the external configuration of an extended telescope. An expansion plate is connected to the rod above the threads and radially extends therefrom. After packing the telescoping device with a pliable protective material, such as tar, the threaded portion of the rod is inserted in the telescoping device which has one end affixed to the expansion plate. By threading an anchor nut on the end of the threaded rod, the earth anchor is readied for insertion in the ground. Upon insertion of the earth anchor in the ground and rotating the rod, the anchor nut advances on the threads thereby shearing each radially extending flange respectively to close the telescoping device, yet still protect threads above the anchor nut.
REFERENCES:
patent: 1907759 (1933-03-01), Durbin
patent: 2399526 (1946-04-01), Warren
patent: 2576412 (1951-11-01), Ogburn
patent: 3807110 (1974-04-01), Kaminski
patent: 3924371 (1975-12-01), Kidwell
Leppink James A.
Raduazo Henry E.
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