Patent ID: 7559716
Filing Date: 2009-07-14
Classification: B25B,F16B,Y10T

Abstract:
1. A clamping lever assembly exerting a clamping force between a base element and a clamping element, the assembly comprising: a set bolt having a longitudinal axis, the set bolt comprising a body having a longitudinal bore and at least one lateral surface forming a non-circular cross-section extending along the exterior surface of the body and defining a retaining surface at one longitudinal end portion of the body, the set bolt comprising a cross hole at an opposite longitudinal end portion of the body; a clamping bolt fixed within the bore of the set bolt at one axial end portion of the clamping bolt, the clamping bolt extending through aligned through holes in the clamping element and the base element and axially restrained to the base element at an opposite axial end portion of the clamping bolt; an eccentric tension lever having an eccentric clamping contour comprising a pivot bore defining an axis of rotation; a cross bolt extending through the pivot bore of the tension lever and the cross hole of the set bolt and interconnecting the tension lever and set bolt, the tension lever being pivoted on the set bolt and limited in its pivoting angle relative to the set bolt; an axially adjustable thrust bearing comprising a lock nut comprising a through hole and one of an internal thread or an external thread and a washer comprising a through hole and the other of an external thread or an internal thread adjustably engaged with the thread of the lock nut, the washer being nested with and rotatably engaged with the lock nut and axially extending from the lock nut, the washer being non-rotatably, axially slidable on the at least one lateral surface of the set bolt, the lock nut and the washer being disposed about the clamping bolt between the tension lever and the clamping element such that the clamping contour of the tension lever engages a clamping surface of the washer and a clamping surface of the lock nut engages the clamping element, the tension lever being pivoted to apply an axial clamping force between the clamping element and the base element; wherein when the lock nut is rotated relative to the washer about the longitudinal axis of the set bolt, the washer slides along the at least one lateral surface of the set bolt to adjust the axial distance which the washer extends from the lock nut, adjusting the axial distance between the clamping surface of the washer and the clamping surface of the lock nut, adjusting the axial clamping force between the clamping element and the base element.