Back to results
US 2011/0226096 A1Published application
Polygonal driving means with inbuilt collar
AssigneeLisi Aerospace
InventorsAnthony Berton, Nicolas Guerin
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeLisi Aerospace
InventorsAnthony Berton, Nicolas Guerin
Estimating the term…
It has become apparent that the dimensions of inbuilt-collar driving means of the same nominal size may vary according to the method of manufacture. The dimensions of the collar must therefore be adapted to suit the mode of manufacture, at the expense of its strength or mass. Moreover, the transmissible torque for tightening and loosening operations varies according to a useful wrenching height. In order to have a useful height identical to the height of the shank, the idea underlying the invention involves pushing the frustoconical collar of a driving means in towards its center along the extension of the sides of the shank. The inbuilt-collar driving means of the invention is suited to all modes of manufacture, and can be manufactured without adversely affecting the dimensions of the driving means or its installation.
1-11. (canceled)
A polygonal driving means comprising an inbuilt collar and a shank, wherein the collar comprises socket faces hollowed out with regard to a collar surface and aligned with lateral sides of the shank of the driving means.
A cylindrical tightening and loosening wrench socket for a polygonal driving means of claim 1, the wrench socket comprising a cavity with a polygonal hollow shank and an end fitted so as to be abutted against the inbuilt collar of the driving means, the end of the wrench socket having sides with shapes complementing those of the collar so as to be pressed against the latter during the abutment, wherein the collar comprises socket faces hollowed out with regard to the collar surface and aligned with the lateral sides of the shank of the driving means.
Dependencies are inferred from the claim text.