Patent 7497653 was granted and assigned to MacLean-Fogg (company) on March, 2009 by the United States Patent and Trademark Office.
The present invention relates to a fastener assembly, comprising a nut provided with a plurality of threads, a torque transmitter shaped to transmit torque to the nut, and an annular surface that is undulating in shape, a washer provided with a clamp surface and a bearing surface that is undulating in shape and axially opposed to the annular surface on the nut, and a spring member located between the annular surface on the nut and the bearing surface on the washer.