REVERSING RATCHET DOOR CLOSURE

摘要

14 REVERSING RATCHET DOOR CLOSER A reversing ratchet lever assembly for driving a bolt or other threaded element to be turned selectively in clockwise and counterclockwise directions about a lever axis. The assembly has a housing that defines a bore coaxial with the lever axis and that receives a drive head for the bolt or other fastener. The drive head has radial external ratchet teeth that are adapted to be engaged by a double pawl pivotally mounted in the housing. The pawl is adapted for movement between forward drive and reverse drive engagement with the ratchet teeth and has an intermediate disengaged position. The assembly is operated by a lever handle adapted to be grasped by an operator. The handle has an inner end received in and retained in the housing for pivotal movement about a longitudinal twist axis located perpendicular to the lever axis. The inner end of the lever handle is operatively associated with the pawl and is adapted to move the pawl to its forward drive position when the handle is twisted in one direction and to its reverse drive position when the handle is twisted in the opposite direction. The handle is biased to a neutral position so that the pawl is disengaged unless the handle is positively twisted in one direction or the other.