Patent ID: 8490930

Claim:
A telescopic supportive apparatus including: an external tube; an internal tube telescopically inserted in the external tube and formed with a series of recesses; a mount secured to the external tube; a toothed wheel supported on the mount and formed with teeth for insertion in the recesses; a handle supported on the mount; a first detent movably located on the mount and formed with a ratchet for engagement with the teeth; a second detent movably located on the mount and formed with a ratchet for engagement with the teeth; and a damping unit including a spring compressed between a side of the toothed wheel and a side of the handle to exert friction between the toothed wheel and the handle and a cap formed with a side in contact with the spring and an opposite side placed against one of the toothed wheel and the handle, thus damping the rotation of the toothed wheel relative to the handle and hence insertion of the internal tube into the external tube.