Patent ID: 11958154
Assignee: nan
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 4:
5. The apparatus of claim 1, wherein the plurality of extension arms further comprise:
a first extension arm that includes a first end cap and a plurality of teeth along a first surface of the first extension arm;
a second extension arm that includes a second end cap and a plurality of teeth along a first surface of the second extension arm;
wherein the top assembly defines a channel for housing the first extension arm and the second extension arm such that the first surface of the first extension arm is held and facing the first surface of the second extension arm with a spacer between the first extension arm and the second extension arm;
one or more synchronizing gears engaged with the teeth on the first surface of the first extension arm and the first surface of the second extension arm, whereby if the first extension arm or the second extension arm is extended, the synchronizing gears cause the other extension arm to extend the same amount.