Space frame
AssigneeHarley Systems Pty Ltd.
InventorEdwin T. Codd
Life of this patent
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Abstract
A space frame of double-layer flat grid type, in which the upper grid is skewed or angularly displaced by 45.degree. relative to the lower grid, has pairs of oblique struts (16) connecting the lower grid nodes (14) to the upper grid nodes (15). At a lower grid node (14) where two chords (10, 11) are superimposed, one pair of oblique struts (16) in a vertical plane through one chord (10) has a common terminal (17) between the two chords (10 and 11). A bolt (22) through the terminals (17) and the chords (10 and 11) secures the parts together. At the nodes (15) of the upper grid, the terminals (19) of the struts (16) are interposed between the superimposed upper grid chords (12 and 13) and secured by bolts (21).
Claims6
A space frame of the double-layer flat grid type with upper and lower grids interconnected by oblique struts, wherein, at a node:
- two chords in one grid layer are superimposed;
- one pair of opposed oblique struts in a vertical plane through one chord have terminals disposed on that chord;
- a second pair of opposed oblique struts lying in a vertical plane through the other chord have terminals interposed between the two chords;
- the chords and strut terminals at the node are interconnected by connecting means through the chords and the strut terminals;
- and
- each pair of opposed oblique struts is a single unit comprising a pair of struts interconnected by and diverging from a common terminal.
Dependencies are inferred from the claim text.