Thrie-beam terminal with breakaway post cable release

Details Thrie-beam terminal with breakaway post cable release Thrie-beam terminal with breakaway post cable release

1995-06-06

1996-04-02

Britts, Ramon S.

Road structure, process, or apparatus

Traffic steering device or barrier

256 131, 248 66, E01F 1504, F16L 300

Patent

active

055034950

ABSTRACT:
An end treatment for a thrie-beam type guardrail and a safety device specifically oriented toward trucks, vans and other utility vehicles having high profiles and centers of gravity. A slotted thrie-beam terminal is featured for use with highway guardrail systems. At least one reinforced slotted section is provided within the thrie-beam terminal to reduce the ability of the thrie beam to resist buckling in response to an axial type loading from end-on impacts. The terminal also provides for gating of laterally impacting vehicles. The terminal incorporates a break-away support post cable release mechanism which lessens risk to impacting vehicles which impact the lead post.

REFERENCES:
patent: 2677530 (1954-05-01), Lauffenburger
patent: 4838523 (1989-06-01), Humble et al.
patent: 5022782 (1991-06-01), Gertz et al.
patent: 5387049 (1995-02-01), Duckett

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