TIGHTENING MEANS FOR ANTI-SKID DEVICES AND TRACTION ENHANCEMENT DEVICES

摘要

A tightening system (135) for use with anti-skid and traction enhancement devices for wheeled vehicles is disclosed. The system comprises sealed tightening mechanism (130) which can clutch and ratchet the rotational movement applied by the user on a knob (212). The tightening system (135) further comprises at least one connection assembly which is adapted to be pivotably and releasably attached to a proximal end of a surface contact member (71) and which is adapted to be connected to the tightening mechanism (130). The tightening mechanism (130) comprises a locking component (193) which has a base plate (240), an inner sidewall (195) and an outer sidewall (194) standing perpendicular to said base plate (240). The inner sidewall (195) recessed portion has a plurality of recesses (230;231) which are adapted to engage with a peripheral projection (209) of the upper clutch (206) for holding the knob (212) in place during locked and unlocked positions of the knob (212). The outer sidewall (194) enters fully or partly, respectively in locked and unlocked positions of the knob (212), into a corresponding slot (210) of said knob (212) for sealing inner volume of the tightening mechanism (130) from outside conditions.