Patent ID: 8083459
Filing Date: 2011-12-27
Classification: B66C,Y10S

Abstract:
1. A clamping apparatus comprising: a frame; a plurality of clamping arms each movably supported by the frame for translation in a horizontal direction to grasp and release a load; and a plurality of adjustable bushings mounted on the frame and guiding the clamping arms for translation with respect to the frame, each bushing being screwed into the frame such that the bushing can be moved towards or away from one of the clamping arms by rotation of the bushing, each bushing having a lock nut screwed onto the bushing which can be tightened to secure the bushing with respect to the frame in a lengthwise direction of the bushing or loosened to enable the bushing to be rotated with respect to the frame, the bushings including a first bushing having an inner end opposing a flat upper surface of one of the clamping arms between upper corners of the one of the clamping arms and a second bushing having an inner end opposing a flat lower surface of the one of the clamping arms between lower corners of the one of the clamping arms.