Irregular-shank tools and drivers therefor
AssigneeTeam Fair Holdings Limited
InventorsKailash C. Vasudeva, Satnam Singh
Life of this patent
Estimating the term…
Abstract
A tool has a distal operative portion and a proximal shank with a mounting portion, for mounting the tool in a holder. A substantial portion of the mounting portion has a cross-sectional shape with at least one and fewer than six 60-degree segments thereof having segment ends joined by a flat surface. The holder has a distal axial aperture or mounting hole for receiving the tool, the aperture having a cross-sectional shape which has 60-degree segments thereof having segment ends joined by a flat surface, but no more such flat surface segments than those corresponding to flat surface segments of the tool. The holder further has a ball-detent mechanism or other locking mechanism for engaging the mounting portion of the tool.
Claims9
For use with a tool having a shank portion with a cross-sectional shape having at least one non-circular 60-degree segment, a tool holder for receiving the shank portion, the holder comprising a receiving portion having at least one cross section including circular and non-circular portions, said non-circular portion having at least one 60-degree segment configured for engagement with said shank portion wherein each circular portion has a common centre of axis with the tool;
- wherein there are two said 60-degree segments, each having a flat surface, said two segments being on opposite sides of said receiving portion section from each other.
A combination of a tool having a shank portion and a tool driver having a holder, said tool holder including a receiving portion for receiving the shank portion, the receiving portion comprising at least one cross section including circular and non-circular portions, said non-circular portion having at least one 60-degree segment configured for engagement with a non-circular 60-degree segment of said shank portion and wherein each circular portion has a common centre of axis with the tool holder, said receiving having a cross-sectional shape having a 60-degree segment for each of said 60-degree segments of said shank portion, shaped correspondingly to each said non-circular segment of said shank portion wherein there are two said 60-degree segments, each having a flat surface, said two segments being on opposite sides of said receiving portion from each other;
- wherein said receiving portion has two said 60-degree segments having segment ends joined by a flat surface, said two segments being on opposite sides of said receiving portion from each other.
Dependencies are inferred from the claim text.