| 摘要 |
PCT No. PCT/AU87/00272 Sec. 371 Date Apr. 14, 1988 Sec. 102(e) Date Apr. 14, 1988 PCT Filed Aug. 18, 1987 PCT Pub. No. WO88/01320 PCT Pub. Date Feb. 25, 1988.A collapsible barrier for vehicular traffic comprising two members (3, 4) pivotally connected to base means (1, 2) thereby enabling the members to be raised into an operative vehicle obstructing condition and to be lowered to an inoperative position to allow vehicles to pass over the members, and releasable lock means (17) to secure the members together in the raised operative condition.
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