Animal husbandry – Animal controlling or handling – Bird
Patent
1998-12-28
1999-12-21
Poon, Peter M.
Animal husbandry
Animal controlling or handling
Bird
52101, 43124, A01K 2900, E04B 172, A01M 2900
Patent
active
060034718
ABSTRACT:
An apparatus for inhibitively preventing birds from gathering comprises at least three support columns, wire members tightly spanned between adjacent said support columns, and a plurality of magnet members disposed onto said wire members respectively. An improved apparatus according to the present invention includes an oscillation transmission mechanism to transmit oscillating motion from one to another adjacent wire members. In this apparatus, when a single wire oscillates, one and another of adjacent wire members oscillate by means of the oscillation transmission mechanism.
REFERENCES:
patent: 3292319 (1966-12-01), McCarthy
patent: 5353543 (1994-10-01), Teraoka
patent: 5497585 (1996-03-01), Engler
patent: 5649394 (1997-07-01), Ohba
Ohba Building Maintenance Co., Ltd.
Poon Peter M.
Shaw Elizabeth
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