Patent ID: 11918853
Assignee: T. K. CHIN COMPANY LTD.
Field: Furniture, games (Other fields)
Classification: CPC A | IPC A

Claim 0:
1. An adjustable ab wheel comprising:
a main shaft having
two opposite ends; and
two external threaded sections extending from a middle section of the main shaft and respectively toward the two opposite ends of the main shaft, and each one of the two external threaded sections having
a thread direction being opposite to the thread direction of the other one of the two external threaded sections; and

two wheels, each one of the two wheels having
a threaded hole axially defined through the wheel and mounted with a respective one of the two external threaded sections of the main shaft;
wherein the two wheels move linearly along the corresponding external threaded sections to approach and abut against each other or to move away from each other when the two wheels rotate around the main shaft.