COLLAPSIBLE ANCHOR Russian patent published in 2013 - IPC B63B21/36 

FIELD: transport.

SUBSTANCE: invention relates to bottom anchorage for small craft. Proposed anchor comprises shaft with axles rigidly secured at shaft body bottom at 120 degrees to support blades pivoting in bores made at axle center. Slots are made on both sides of blade bores and milled at opposite sides. Adjacent blades are connected with the help of slots and locked by retainers composed of plats arranged at blade bodies nearby said slots and bolted in place.

EFFECT: simplified fabrication and use.

3 dwg