| 摘要 |
A seat support having a clevis having an annular base and upper and lower arms rotatably mounted on and extending radially outward from the annular base; at least a first support column extending downwardly from the annular base; seat mounting ball bushings having at least a first laterally extending tongue, the at least first tongue being received by the clevis; and at least a first clevis pin attaching the at least first tongue to the clevis.
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