Triangular truss walkout cantilever

Details Triangular truss walkout cantilever Triangular truss walkout cantilever

1989-07-13

1991-04-23

Novosad, Stephen J.

Bridges

Truss

Arrangement

52 28, 52 73, 52638, 52693, 246477, B61L 512, E04C 302, E04H 1210

Patent

active

050089676

ABSTRACT:
A triangular truss walkout cantilever for displaying railroad warning signals above the individual lanes of a road or highway at a railroad grade crossing is disclosed. The cantilever includes a cantilever arm attached to a vertical roadside mast. The cantilever arm has three parallel truss members that form a triangular cross section. These members are reinforced by a system of struts and braces. A catwalk allows a worker access to the warning signals for maintenance and no braces interfere with such access.

REFERENCES:
patent: 2066388 (1937-01-01), Birkin
patent: 3345793 (1967-10-01), Cvikl
patent: 3562994 (1971-02-01), Von Linsowe
patent: 3570196 (1971-03-01), Kunczynski
patent: 3952978 (1976-04-01), Reinitz
patent: 4489659 (1984-12-01), Kamohara et al.
patent: 4633566 (1987-01-01), Coppa
Safetran Cantilevers brochure covering Models ARC-100, W, and WNR.
Brochure entitled "Cantilever Model 320A".
Western-Cullen brochure entitled "WC Stationary (Walkout) Cantilevers".

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