\( \boldsymbol{x}(u, v) = \begin{pmatrix} \cosh u \hskip 0.1em \cos v \\ \cosh u \hskip 0.1em \sin v \\ u \end{pmatrix} \)

\( \left( - \dfrac{2 \pi}{3} \leq u \leq \dfrac{2 \pi}{3}, \, 0 \leq v \leq 2 \pi \right) \)