| 摘要 |
A threaded insert including a main body being generally cylindrical with a central bore extending therethrough having outer ring members with knurling in opposed directions for preventing rotation after implanting of the insert into a carrier substrate. The main body includes upper pilot ribs positioned on the outer surface of the main body adjacent the upper end to facilitate entry of that end into the carrier substrate during implanting thereof. The rib includes an upper leading surface which is arcuate to facilitate this insertion by facilitating movement of the substrate material during insertion. A lower pilot rib configuration is also included to allow insertion of the one-piece metallic threaded insert with either the upper or lower end entering the carrier substrate first. Thus the device is preferably multi directional in that it allows insertion of the insert with either end first into the carrier substrate which greatly facilitates mechanized or automatic implanting methods wherein orientation of the metal insert with one of two specific ends always oriented in a downward direction and inserted first is not necessary due to the configuration of this design.
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