Patent ID: 9011060
Filing Date: 2015-04-21
Classification: F16B

Abstract:
1. A locking fastener assembly to secure a joint, the locking fastener assembly comprising: a first upper washer and a first lower washer constituting a first pair of washers, the first upper washer having a first serrated side and a first cammed side, the first lower washer having a second cammed side and a first generally smooth side, the first and second cammed sides being arranged to face each other, the first generally smooth side of the first lower washer being arranged to face a flange; at least one first means for securement which is on the first lower washer, the at least one first means for securement being arranged to keep together the first lower washer and the flange, a surface of the flange having a receiving member to receive and engage the at least one first means for securement, wherein the surface of the flange faces the first lower washer; and at least one protrusion on the first upper washer, wherein when the first upper washer is against the surface of the flange, the at least one protrusion prevents the receiving member from receiving and engaging the first upper washer.