Title:
VENTILATION STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2023/002518
Kind Code:
A1
Abstract:
A ventilation structure that causes natural ventilation by opening a ventilation opening (3) penetrating a wall (2) of a poultry house (1) as a livestock house during a power outage, the ventilation structure comprising: a ventilation door (4) that openably closes the ventilation opening (3) to open to the outside of the poultry house (1); an opening/closing arm (5) that extends from the ventilation door (4) into the poultry house (1); a first pulley (6) rotatably attached to the wall (2); a second pulley (7) attached to the first pulley (6); a first wire (8) that is attached at one end to the first pulley (6), wound at the middle part around the first pulley (6), and attached at the other end to the ventilation door (4); and a second wire (9) that is attached at one end to the second pulley (7) and attached at the other end to the tip of the opening/closing arm (5), wherein where the first pulley (6) is rotated in the direction in which the first wire (8) is fed, the second wire (9) is wound on the second pulley (7) and the ventilation door (4) opens the ventilation opening (3).
Inventors:
MORI YUICHIRO (JP)
Application Number:
PCT/JP2021/026906
Publication Date:
January 26, 2023
Filing Date:
July 19, 2021
Export Citation:
Assignee:
HYTEM CO LTD (JP)
International Classes:
A01K31/02
Foreign References:
| JPH0681253U | 1994-11-22 | |||
| JPS6383381U | 1988-06-01 | |||
| JPH08308413A | 1996-11-26 |
Attorney, Agent or Firm:
OHYA Masayo et al. (JP)
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