Family of fixation devices with variable taper

Abstract

In the prior art, a multitude of families of different drills and lengths exist, varying per diameter of the attachment, contrary to attachments with cylindrical bodies, for which a single tool is sufficient. One of ordinary skill in the art must provide for the appropriate tool and device for each thickness of the element being fastened, which represents a significant cost in tooling, in addition to a loss of the time required to change the tooling. The invention relates to the idea of adapting the rate of taper (C1; C2) of the device (1; 20) according to the thickness being fastened (12; 31). Preferably, the rate of taper of the bushings falls between 1% and 4%. Thus, with three or four reference clearances for devices with the same outer diameter (16A; 16C), however a different rate of taper, all conceivable element thicknesses can be fastened, without modifying the diameter of the bore made within the elements being assembled.

Dependencies are inferred from the claim text.