Patent ID: 7204466
Filing Date: 2007-04-17
Classification: F16B,F16M,Y10T

Abstract:
1. A quick-acting telescopic tube comprising a stationary tube having a detent lining mounted securely in the stationary tube and having an extension tube mounted movably in the detent lining and the stationary tube, extending through the through hole in the bushing and having a lock activating assembly mounted around the extension tube and having a bottom plug being hollow, mounted securely in the bottom of the extension tube and slidably in the detent lining and having an activating rod mounted movably in the extension tube, connecting to the lever and having a spring mounted around the activating rod between the inner shoulder in the bottom plug and the locking piston; and a ball mounted movably in the transverse through hole in the bottom plug and selectively in either one of the detents in the detent lining or the annular recess in the locking piston.