Title:
【発明の名称】ハッチ安全柵
Document Type and Number:
Japanese Patent JP2790620
Kind Code:
B2
Abstract:
A safety fence for a square hatched formed in a slab of a building is provided. The fence has lids pivotable about opposed sides of the hatch, and has such a size that about half of the opening of the hatch is closed by each of the lids. Side frames having a predetermined height are pivotable about opposed sides of the hatch. A plurality of gear mechanisms is provided, with each mechanism comprising a first gear and a second gear in mesh with each other, a first shaft supporting the first gear, a second shaft supporting the second gear, the first and second shafts extending parallel to the opposed ends of the hatch, the first gears being secured to lower ends of the lids, and counterweights mounted to one of the second shafts. The safety fence is set up by erecting the lids and the side frames. A plurality of brackets each having a pair of bracket portions secured to the inner wall of the hatch. The pairs of bracket portions are provided on each side of each of the gear mechanisms and support the first and second shafts supporting the first and second gears.
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Inventors:
YAMADA KENICHI
NAKAYA YUKIO
NAKAGAWA HIROTO
HORI MITSURU
NAKAYA YUKIO
NAKAGAWA HIROTO
HORI MITSURU
Application Number:
JP6314996A
Publication Date:
August 27, 1998
Filing Date:
March 19, 1996
Export Citation:
Assignee:
ANAN DENKI KK
KANSAI DENRYOKU KK
KANSAI DENRYOKU KK
International Classes:
E04H5/06; E04G21/32; E04H17/00; E05F1/02; E06B11/00; (IPC1-7): E04H5/06; E04H17/00
Attorney, Agent or Firm:
Bunji Kamata (2 outside)