Drive system having a strengthened drive system member for resis

Details Drive system having a strengthened drive system member for resis Drive system having a strengthened drive system member for resis

1999-05-24

2000-12-12

Saether, Flemming

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

811246, 81186, 411402, 411418, B25B 1306

Patent

active

061583103

ABSTRACT:
A novel drive system includes a body, such as a threaded fastener body or a drive tool body, a tapered transitional portion at an end of the body, and a drive head at the end of the transitional portion, such that the transitional portion is between the drive head and the body. The transitional portion has structure thereon, such as a plurality of alternating curved lobes and flutes, for engagement with a corresponding socket. At least a portion of the lobes are threaded in the transitional portion. The drive head also has structure thereon for engagement with the socket, such as a plurality of alternating curved lobes and flutes. The flutes on the transitional portion are axially aligned with the flutes on the drive head and the lobes on the transitional portion are axially aligned with the lobes on the drive head.

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patent: 5461952 (1995-10-01), Goss

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