Metal tubes for guardrail

Details Metal tubes for guardrail Metal tubes for guardrail

2006-03-28

2006-03-28

Stodola, Daniel P. (Department: 3679)

Static structures (e.g., buildings)

Facer held by stiffener-type frame

Facer attached between exposed frame members

C052S780000, C052S696000, C256S024000, C256S059000, C403S278000, C403S326000

Reexamination Certificate

active

07017320

ABSTRACT:
A guardrail comprises two parallel metal tubes each having two lengthwise bent ends each having a fastening member, two inner abutment mechanisms each having a lengthwise abutment member and a mating fastening member at either end engaged with the fastening member for securing each metal tube and the corresponding abutment mechanism together, and a protective board having either end urged against the abutment member and the bent ends, thereby securing the protective board between the abutment mechanisms. Further, a number of variations are possible.

REFERENCES:
patent: 431193 (1890-07-01), Pennycook
patent: 3334462 (1967-08-01), Brooks
patent: 3517474 (1970-06-01), Lanternier
patent: 3854269 (1974-12-01), Hancock
patent: 3962827 (1976-06-01), Chaffee
patent: 3991981 (1976-11-01), Wu
patent: 4586697 (1986-05-01), Tornya
patent: 4676469 (1987-06-01), Rotermund et al.
patent: 4690383 (1987-09-01), Batcheller
patent: 5200240 (1993-04-01), Baker
patent: 5396735 (1995-03-01), Dietrich
patent: 6293523 (2001-09-01), Fendler
patent: 6460310 (2002-10-01), Ford et al.
patent: 6546675 (2003-04-01), Adderton

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