| 摘要 |
Improvements to lighting equipment are disclosed, notably in the integration of functions formerly performed by separate units and in improved flow of and access to information required for configuration, operation, troubleshooting, and documentation. Improvements are disclosed to the fabrication of trusses and other structures employed in such systems and for other purposes, including a profile having important advantages in shipping and storage space requirements. |
| 主权项 |
1. A section of elongated truss structure, said section having a long axis and a length, said section having two ends, each of said ends having provisions for mechanical connection to said end of another of said sections so as to form a structure of a total length greater than said length of said section,
Said section comprising at least five continuous elongated chords suitable for the attachment of loads, each of said chords parallel to said axis and to each other, Four of said chords defining a crosssection at right angles, said crosssection having four sides, with two opposite sides being of equal length and the remaining two opposite sides being of a length unequal to each other, one of said unequal sides being longer, Said fifth side being disposed within said crosssection, and each of said five elongated chords being mechanically connected to at least one other of said chords by a plurality of intermediate structural members, and The plane defined between said two chords forming said longer unequal side being substantially open. |
