B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
153/5
B21D 1/12 (2006.01)
Patent
CA 1131117
ABSTRACT OF THE DISCLOSURE A dent straightening tool having a manually grasp- able handle affixed to one end of an elongate shaft and a work piece engaging, helically threaded member affixed to the opposite end of the shaft. The threaded member has a substantially constant radius root with a blunt tip provided at the distal end of the root. The thread begins from a minimum radius at the blunt tip and then progressively increases in radius along the length of the root to attain a size substantially larger than the radius of the root so that the depth of the thread is substantially deeper than the radius of the root. Also, the flat length of the thread, as measured along the root, is at least one- half of the pitch length of the thread.
356501
Gowling Lafleur Henderson Llp
Haydon Charles R.
LandOfFree
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