Static structures (e.g. – buildings) – Frangible section or means
Patent
1980-10-14
1984-03-13
Ridgill, Jr., James L.
Static structures (e.g., buildings)
Frangible section or means
523091, 404 10, E04H 1202, E04B 154
Patent
active
044359306
ABSTRACT:
A traffic safe pole for supporting traffic signs, road lighting and the like.
The pole is characterized in that it is divided substantially perpendicularly to its longitudinal direction preferably in one place and, thus, comprises a first portion (1), to which, for example, a traffic sign (2) is intended to be attached, and jointed to said first portion a second portion (3) intended to be anchored in a suitable way, for example in the ground (4).
The pole further is characterized in that said joint substantially consists of a sleeve (6,12,30) so arranged, that its tensile strength in substantially its longitudinal direction considerably exceeds the tensile strength in its circumferential direction. Said sleeve (6,12,30) further is attached, preferably by glueing, to the outer (9,10) or inner (14,15,32,33) shell surface of said pole portions (1,3) at a tubular pole and to the shell surface (9,10) of said portions (1,3) at a homogenous pole.
According to a preferred embodiment, said sleeve (6) consists of reinforced plastic with directed reinforcement, the longitudinal direction (7) of which substantially coincides with the longitudinal direction of said sleeve (6), which sleeve (6) is glued on the outer shell surface (9,10) of the pole portions (1,3).
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patent: 3516446 (1970-06-01), O'Hargan et al.
patent: 3796057 (1974-03-01), Dougherty
patent: 4056591 (1977-11-01), Goettler et al.
patent: 4270873 (1981-06-01), Laehy et al.
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