Fences – Miscellaneous
Reexamination Certificate
1999-04-26
2001-07-10
Browne, Lynne H. (Department: 3629)
Fences
Miscellaneous
C256SDIG006, C187S239000, C187S241000, C187S242000, C187S401000
Reexamination Certificate
active
06257556
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a safety fence and, more particularly, to a safety fence that is mounted on an outer wall of a building being constructed to prevent various accidents and catch falling objects including debris.
2. Description of Related Arts
The average height of buildings in most cities is increasing in an effort to more effectively use land. In addition, as construction technology develops, rapid construction methods have been pursued.
However, while there have been great strides in construction technology, the development of a temporary structure that can support the high-rise building under construction and the rapid construction methods has been relatively limited. If the temporary structure is not built on an outer wall of a building being constructed, a worker may be injured or killed in a fall and building materials such as blocks and other objects may fall to the ground, causing the build-up of trash around the building and possible injuries to persons in proximity to the building.
To solve the above problems, a tent has been setup to cover the outer wall of the building, or a falling preventing net has been pitched in a direction perpendicular to the outer wall of the building. However, such a tent or net may be destroyed or damaged due to the myriad of atmospheric conditions when it is setup on a superhigh-rise building. In addition, when building materials are dropped from a high story, the objects may penetrate the tent or net as a result of the high speed at which the objects strike the tent or net, causing safety accidents.
In addition, such a tent or net is troublesome to pitch. Also, when pitching the tent or net, since there is no device for providing safety to the workers setting up the tent or net, these workers may face serious injuries if they fall.
SUMMARY OF THE INVENTION
Therefore, the present invention has been made in an effort to solve the above described problems.
It is an object of the present invention to provide a safety fence which can completely catch minute particles such as concrete dust as well as heavy objects such as building materials, thereby preventing environmental pollution and industrial accidents.
To achieve the above object, the present invention provides a safety fence used in a field of a construction work, comprising a guide rail disposed parallel to an outer wall of a building being constructed, a fence frame disposed to cover the outer wall and movable along the guide rail, elevating means for moving the fence frame along the guide rail, and a tent disposed on the fence frame.
The safety fence may further comprises a net for reinforcing the tent, the net being fixedly disposed on the fence frame.
The fence frame comprises a plurality of platforms that are vertically connected to each other in a multi-story structure. The platforms are connected to each other by braces. The fence frame comprises a plurality of platforms that are horizontally connected to each other by a fastener. Preferably, the elevating means is disposed on a top platform.
According to one embodiment of the present invention, the elevating means comprises a drive source, a spool directly connected to the drive source, and a rope releasably wound around the spool, a free end of the rope extending downward, then further extending upward via the fence frame, and being fixed on the building.
According to another embodiment of the present invention, the elevating means comprises a drive source, a pinion directly connected to the drive source, a rack meshed with the pinion and integrally formed on an outer wall of the building.
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patent: 4557353 (1985-12-01), Pichon
patent: 5014822 (1991-05-01), Chapelain et al.
patent: 5299781 (1994-04-01), Barrett et al.
patent: 5630572 (1997-05-01), Guay
patent: 5690317 (1997-11-01), Sandsborg
patent: 1423718 (1988-09-01), None
patent: 924329 (1988-09-01), None
Baker & McKenzie
Bochna David E.
Browne Lynne H.
Sang Bo Construction Co., Ltd.
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