| 摘要 |
A gate assembly including a support portion and a gate portion carried by the support portion and movable with respect thereto, a gate control portion and a gate activating portion associated with the gate portion; the gate portion having one end thereof disposed adjacent to the support portion and extending outwardly therefrom, pivot mechanism connecting a lower part of the gate portion to an adjacent lower part of the support portion; the gate control portion including biasing mechanism associated with the gate portion; the gate activating portion including a power source mounted within the frame members of the support portion adjacent one end thereof, drive mechanism including translatable mechanism activatable by the power source, the translatable mechanism including a pair of transversely spaced roller assemblies slidably carried on spaced horizontal rail members, the drive mechanism also including continuous flexible loop mechanism supported adjacent the ends of each rail member, each roller assembly being secured to one of the loops, a pair of arm members extending from the roller assemblies to the gate portion with one arm member being disposed on each side of the gate portion, each arm member having one end pivotally connected to the respective roller assembly disposed on the same side of the gate portion and the opposite end of the arm member being pivotally connected to the gate portion adjacent the lower edge thereof and spaced from the pivotal connection of the gate portion with the support portion.
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