Static structures (e.g. – buildings) – Barrier or major section mounted for in situ repositioning;... – Roof movable as entity relative to its substructure
Patent
1986-06-25
1988-06-21
Raduazo, Henry E.
Static structures (e.g., buildings)
Barrier or major section mounted for in situ repositioning;...
Roof movable as entity relative to its substructure
52 82, E04B 1346
Patent
active
047518006
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a dome-shaped roof structure and, more particularly, to a dome-shaped roof structure capable of being closed or partly opened according to weather conditions.
BACKGROUND ART
As is generally known, structures for athletic games, such as baseball games and other athletic sports, are not provided with a roof so that athletic activities can be practiced in a natural environment. However, without a roof, athletic activities are obliged to be interrupted or to be called off if rain begins to fall during athletic activities or on a rainy day.
Recently, all-weather stadiums have been proposed and roofs, for example, a pneumatic film roof structure, for all-weather stadiums have become the object of attention.
However, the pneumatic film roof structure has the following disadvantages.
First, when an athletic stadium has a roof of a pneumatic film structure formed of films of a synthetic resin or the like, the athletic stadium is filled with pressurized air having a pressure slightly higher than the atmospheric pressure, and hence the athletic stadium needs to be sealed so that the pressurized air will not leak outside, which requires entrances and exits of a complicated construction for spectators and the like.
Secondly, such an athletic stadium makes internal lighting and ventilation difficult and spoils the enjoyment of practicing or watching athletic sports in a natural environment.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a dome-shaped roof structure which is capable of being partly opened according to weather conditions to enabling daylight and ventilation on a fine day so that athletic sports can be practiced in a natural environment or outdoors and for enabling practicing athletic sports in a comfortable condition even on a rainy day, and which is capable of being easily opened and closed.
It is another object of the present invention to provide a method of securely and efficiently constructing such an openable dome-shaped roof structure.
In order to achieve the above objects, the present invention provides an openable dome-shaped roof structure supported on side walls built on the ground, so as to cover an enclosure defined by the side walls, comprising: an anuular stationary roof section having a central opening and fixed along the outer periphery thereof to the side walls; and a movable roof section having a plurality of roof units having substantially the same shape and capable of being radially moved between an open position where the roof units are supported on the stationary roof section and a closed position where the roof units are supported on beams so as to cover the central opening.
The degree of opening of the movable roof section is determined according to the condition of the external environment, such as seasonal conditions and weather conditions, whereby a comfortable internal space may be always provided.
In one embodiment of the present invention, the beams are fixedly extended between the inner periphery of the stationary roof section and the center of the central opening. These fixed beams may include guide rails for guiding the roof units of the movable section.
In another embodiment of the present invention, the beams are movable. When the roof units are at the open position, the movable beams are positioned near the stationary roof section. The movable beams each may be a retractable beam secured to the stationary roof section and extending toward the center of the central opening, the beams being stretched or retracted to shift the roof units. Alternatively, the movable beams each may be a swing beam pivotably joined at one end thereof to the inner periphery of the stationary roof section so as to be turned on a pivot within the central opening.
A method of construction of the stationary roof section of the dome-shaped structure of the invention comprises the steps of: pivotably securing an outer end of each of a plurality of frame members corresponding to radial divisions of the
REFERENCES:
patent: 1193833 (1916-08-01), Sherman
patent: 1240182 (1917-09-01), Douthitt
patent: 2716993 (1955-09-01), Coderick
patent: 3815299 (1974-06-01), Sorensen
patent: 3835602 (1974-09-01), Tuuri
Adachi Toshio
Aoyagi Toru
Kida Yukio
Shotaka Sunao
Yamanaka Shigeki
Ohbayashi-Gumi Ltd.
Raduazo Henry E.
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