Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Components adjustably or collapsibly connected
Patent
1988-12-09
1990-08-21
Ridgill, Jr., James L.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Components adjustably or collapsibly connected
52648, 403378, E04H 1218
Patent
active
049495160
ABSTRACT:
A truss connecting joint for a crane is disclosed in which the truss frame has parallel chord members each comprising two beams having I-shape cross-sections, a female ear having a pair of parallel spaced apart plates projecting from an end of one of the beams toward the other beam and a male ear including at least one plate extending from the other beam and positionable between the plates of the female ear. When the plate or plates of the male ear are positioned between the plates of the female ear, the two ears may be joined together by a member extending through the ears.
The connecting joint may be positioned between two truss lace members which are perpendicular and affixed to two parallel chord members of the truss frame. Diagonal lace members are also affixed to the truss frame adjacent to the affixation location of the perpendicular lace members to the chord members. The diagonal lace members, perpendicular lace members, and chord members are positioned such that the planes in which the centerlines of the diagonal and perpendicular lace members lie are perpendicular to a plane common to the centerlines of the chord members and the planes of the diagonal lace members intersect each other between the planes of the two perpendicular lace members.
REFERENCES:
patent: 1545129 (1925-07-01), Cook
Welding and Design Fabrication, Apr. 1982, pp. 72-74, article by Elmer W. Blodgett, entitled Sound Weld Details.
Harnischfeger Corporation
Ridgill, Jr. James L.
Ruppin Richard C.
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