SELF ORIENTABLE SNOW FENCE OR SAND FENCE WORKS

摘要

PCT No. PCT/FR81/00122 Sec. 371 Date May 24, 1982 Sec. 102(e) Date May 24, 1982 PCT Filed Sep. 24, 1981 PCT Pub. No. WO82/01204 PCT Pub. Date Apr. 15, 1982.A self-orientating barrier fence for use in controlling snow or sand drifts or other airborne particles which is rotatably mounted on a support in such a manner as to automatically direct itself into a position perpendicular to wind. The barrier fence may be positioned without regard to measurements of wind direction and may be removed when it is not needed.