Bit with frictional retention in drive socket
AssigneeSnap-on Tools Corporation
InventorFrank Mikic
Life of this patent
Estimating the term…
Abstract
A polygonal bit is frictionally retained in a mating socket opening of a drive socket by the provision of recesses in the flat surfaces of the bit, the formation of each recess creating a raised ridge of material displaced from the recess and projecting from the flat surface around the perimeter of the recess for frictional engagement with the corresponding drive surface of the drive socket. Recesses may be formed in flat surfaces on opposite sides of the bit, with one or two recesses being formed in each such surface. Various shapes of recess are disclosed.
Claims20
A bit comprising:
- an elongated solid body substantially polygonal in transverse cross section, said body having a plurality of substantially flat planar surfaces intersecting at a plurality of corners, a recess formed in at least one of said flat surfaces, and a raised ridge of material displaced from said recess and projecting from the associated one of said flat surfaces around substantially the entire perimeter of said recess.
The bit of claim wherein said body includes a plurality of said recesses.
In combination:
- a driven socket having a socket opening substantially polygonal in transverse cross section and defining socket drive surfaces, an elongated solid body substantially polygonal in transverse cross section and shaped and dimensioned to be mateably removably received in the socket opening for driven engagement by the socket drive surfaces, said body having a plurality of substantially flat planar body drive surfaces intersecting at a plurality of corners, a recess formed in at least one of said body drive surfaces, and a raised ridge of material displaced from said recess and projecting from the associated one of said body drive surfaces around substantially the entire perimeter of said recess for frictional engagement with the corresponding socket drive surface for retaining said body in the socket opening.
Dependencies are inferred from the claim text.