| 摘要 |
<p>PURPOSE:To prevent a part of a structure such as an electric wire or an antenna from being damaged due to the weights of fowls applied thereto or nesting thereof by installing a sleeve in the part troubled by the perching of the fowls so as to enable the free rotation. CONSTITUTION:This sleeve 1 for preventing an aerial structure (A) such as an electric wire or an antenna form being damaged by fowls is obtained by attaching the sleeve 1 around a part troubled by perching of the fowls so as to enable the free rotation thereof. The sleeve is rotated in perching fowls thereon and the fowls hang upside down by the own weight themselves and cannot perch thereon.</p> |
