Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Components adjustably or collapsibly connected
Patent
1989-06-02
1990-09-25
Murtagh, John E.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Components adjustably or collapsibly connected
52693, 52726, 1988603, 403339, B66B 2300
Patent
active
049584731
ABSTRACT:
A frame has elongated upper and lower angle members each comprising two parts both having L-shaped cross sections and joint portions of T-shaped cross sections formed at adjacent end portions of the two parts. The legs of the T-shaped joint portions are connected by a coupling member disposed on the legs and secured thereto by fastening members.
REFERENCES:
patent: 2058537 (1936-10-01), Weiskopf
patent: 3078970 (1963-02-01), Black
patent: 3707220 (1972-12-01), Boltrek
Hitachi , Ltd.
Murtagh John E.
LandOfFree
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