The present invention is directed to a tamper-resistant threaded fastener which may be readily installed into a workpiece but once installed cannot readily removed. The threaded fastener includes a shank portion having a threaded region formed at one end, a retaining element formed at another end and a dwell region interposed between the threaded region and the retaining element.
申请公布号
WO2004113736(A3)
申请公布日期
2007.01.18
申请号
WO2004US19199
申请日期
2004.06.15
申请人
NEWFREY LLC;BROWN, ROBERT, W., JR.;PIACENTI, FRANK