Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Three-dimensional space-defining
Reexamination Certificate
1999-12-14
2001-06-05
Stephan, Beth A. (Department: 3635)
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Three-dimensional space-defining
C052S653200, C052S654100, C052S081100, C052S081200, C052S080200
Reexamination Certificate
active
06240694
ABSTRACT:
BACKGROUND
The disclosures herein relate generally to space frames and more particularly to internal cladding mounted on a space frame structure.
There are recent improvements in space frame structures. In U.S. Pat. No. 5,867,961, a cladding support system for a framework includes rounded tubular members having an arcuate face and flattened opposite ends inserted into cylindrical hubs. A support element includes an elongated span and opposite end portions each including a terminal end. The span has an arcuate surface in seated engagement with the arcuate face of the tubular member. The end portions of the support element each have a tapered surface coextensive with and angularly disposed relative to the arcuate surface. The tapered surface includes a groove at each terminal end of the support element for receiving the flattened ends of the tubular members. The terminal ends are angular and overhang the cylindrical hubs.
In U.S. Pat. No. 5,924,258, a cladding support system includes rounded tubular members having an arcuate face. The tubular members are connected to extend outwardly from hubs. A cladding support member is mounted on the arcuate face of the tubular members and extends transversely across the tubular members. The support member is substantially “U” shaped including a raised closed end and a pair of sides terminating at an open end. A flange extends outwardly from each side. Each flange is attached to the arcuate face of the tubular member. Cladding is attached to the raised closed end of the support member.
In recent years, as society becomes more and more environmentally conscious, there is an increased need for covering very large piles of dry bulk aggregate materials, such as limestone, coal, mineral ores, fertilizer, and grains. Covering these piles prevents air and runoff pollution and protects the materials from contamination.
One of the preferred solutions that has emerged to satisfy this need is the metallic dome. The dome's framework is constructed of interconnected steel or aluminum sections, and the cladding generally consists of corrugated or flat sheets of the same metal laid and fastened over the structure. Metallic domes have the obvious advantages of lighter weight and lower costs. However, their use presents some special problems when the stored bulk material is combustible. Coal, fertilizer and grains fall into this category.
These problems include the fact that combustible materials may expose the structure to heat if they catch fire or combust spontaneously. The heat may easily exceed the safe levels at which aluminum or even steel maintain their strength. Dust may accumulate on the members of the structure. This dust may be dislodged from the structure elements easily by any of a number of events, such as strong winds, machinery vibrations, earthquake, vehicle impact, etc. The dust from such combustible materials may present a well known potentially hazardous situation. Lastly, in the case of corrosive material storage, the accumulation of corrosive dust on the structural space frame elements will eventually corrosively damage the structural elements.
Therefore, what is needed is an apparatus and a method of constructing a space frame dome structure that protects the structural elements from heat, and at the same time limits the collection of dust on the structural space frame elements.
SUMMARY
One embodiment, accordingly, provides an apparatus and a method for cladding a space frame dome structure internally for protecting the frame from heat and limiting the accumulation of combustible dust on the structural frame members. To this end, a structure includes a framework having frame members interconnected by hub members. The framework has an inner surface and an outer surface. Cladding material is attached to the inner surface of the framework to form an enclosure with the framework and maintain the framework exterior of the cladding material.
A principal advantage of this embodiment is that the structural frame elements are protected from heat within the structure. Also, dust from bulk material being stored in the structure is unable to settle and accumulate on the structural frame elements. Another advantage is that the structure has an exterior rough surface that diffuses wind forces acting thereon. Therefore in locations where wind design is a critical factor, such as in costal regions, the normally required weight of the structure may be reduced.
REFERENCES:
patent: 2914074 (1959-11-01), Fuller
patent: 2964147 (1960-12-01), Pentiman
patent: 2976968 (1961-03-01), Pentiman
patent: 3079681 (1963-03-01), Pentiman
patent: 3468082 (1969-09-01), Hadley
patent: 3690078 (1972-09-01), Maynard, Jr.
patent: 3921555 (1975-11-01), Suzuki et al.
patent: 4262461 (1981-04-01), Johnson et al.
patent: 4400927 (1983-08-01), Tinase
patent: 4567707 (1986-02-01), Herman
patent: 4603519 (1986-08-01), Lew et al.
patent: 4750807 (1988-06-01), Felix
patent: 4970841 (1990-11-01), Zeigler
patent: 5305571 (1994-04-01), Trevino
patent: 5867961 (1999-02-01), Castano
patent: 5924258 (1999-07-01), Castano
patent: 6085468 (2000-07-01), Quiring et al.
Geometrica, Inc.
Haynes and Boone L.L.P.
Stephan Beth A.
Tran. A Phi Dieu
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