Patent ID: 9174518
Filing Date: 2015-11-03
Classification: B60J,B63B,F16B,Y10T

Abstract:
1. A clamping device for attaching or holding a sheet material comprising: a first clamping surface on a first jaw member having a plurality of protuberances concentric about a first common center, wherein protrusion heights from the first clamping surface of protuberances closer to the common center are greater than protrusion heights of protuberances further from the first common center; a second clamping surface on a second jaw member having a plurality of recesses concentric about a second common center, wherein a depth and shape of each recess mates with a protuberance on the first clamping surface; and a pivoting hinge disposed between the first and second jaw members such that the first center aligns with the second center, the hinge providing an open position with the protuberances and recesses disengaged, and a closed position with the protuberances and recesses engaged into a mating nesting juxtapositioned position, wherein during transition between the open position and the closed position the protuberances closest to the first center engage the recesses closest to the second center prior to engagement of protuberances and recesses further from the first and second centers.