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    • 5. 发明申请
    • BOLLARD
    • US20220034053A1
    • 2022-02-03
    • US17309076
    • 2018-12-13
    • GUARDIAR EUROPE BVBA
    • Timothy MESSELIS
    • E01F13/04
    • A bollard device (1) comprising an outer bollard member (2) and an inner bollard member (3) which is provided to be displaceable between a retracted position wherein the inner bollard member (3) substantially extends within an interior space (4) of the outer bollard member (2), and an extended position wherein part of the inner bollard member (3) extends above the outer bollard member (2) wherein the inner bollard member (3) comprises an upper part (5) and a lower part (6), wherein in the extended position the upper part (5) substantially extends above the outer bollard member (2) and the lower part (6) substantially extends within the interior space (4), wherein the lower part (6) of the inner bollard member (3) comprises at least two reinforcement elements (10a, 10b) wherein these reinforcement elements (10a, 10b) form protrusions of the inner bollard member (3).