Inventor:Billingham; Ernest W.
No. of patents:1
||Title Of Patent
||Screw for contaminated pre-tapped holes
||November 27, 1990|
|A locking screw having a head at one end, a special entry portion at the other end, and a trilobular shank portion extending from the entry portion toward the head. The screw is further characterized in that the thread profile is of a double angle configuration symmetrical about an axis |