Patent ID: 7975519
Filing Date: 2011-07-12
Classification: B21H,E02D,E04B,E04H,F03D,F16B,Y02E,Y02P,Y10T

Abstract:
1. A method of swaging a portion of a polypropylene sleeve on an anchor bolt for a wind turbine, the method comprising the steps of: sliding the polypropylene sleeve over the length of the anchor bolt, the anchor bolt having a nut attached to the end opposite the end of the sleeve to be swaged; rotating a swaging apparatus onto the threads of the anchor bolt adjacent to the end of the sleeve to be swaged, the swaging apparatus comprising a cylindrical body defining a longitudinal axis, a swaging end, and a threaded end, the swaging end comprising a plurality of rollers arranged at different points along the length of the longitudinal axis and having different radial distances from the longitudinal axis, and the threaded end comprising threads which match the threads of the anchor bolt; and rotating the swaging apparatus over the polypropylene sleeve, the rollers of the swaging apparatus plastically compressing the sleeve into a portion of the threads of the anchor bolt.