Socket drive improvement
US-2015135910-A1 · May 21, 2015 · US
US2020331125A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020331125-A1 |
| Application number | US-202016918712-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 1, 2020 |
| Priority date | Nov 15, 2013 |
| Publication date | Oct 22, 2020 |
| Grant date | — |
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Official abstract text for this publication.
Tools, for example, hexagon sockets, dodecagonal sockets, splined sockets, wrenches, etc., that have inner surface geometries adapted to engage a flank of a fastener at a point away from a corner of the fastener. This increases the strength and life of the socket, reduces a risk of the fastener becoming locked or stuck in the socket, and reduces the risk of the fastener being stripped or the socket slipping on the fastener.
Opening claim text (preview).
What is claimed is: 1 . A tool adapted to engage a head of a dodecagonal type fastener having a corner and a flank with a flank length, comprising: a surface having a sidewall extended between first and second recesses, wherein the sidewall includes substantially straight first and second portions respectively having first and second portion lengths, the first and second portions are angularly disposed by about 130 to 140 degrees relative to each other, thereby creating a contact point that is adapted to engage the flank at a distance of about 75 to 90 percent of the flank length away from the corner. 2 . The tool of claim 1 , wherein the first and second portions are angularly disposed by about 133 to 136 degrees relative to each other. 3 . The tool of claim 1 , wherein the contact point is adapted to engage the flank at a distance of about 80 to 85 percent of the flank length away from the corner 4 . The tool of claim 1 , further comprising a socket body having an axial bore, and wherein the surface is an inner surface disposed in the axial bore. 5 . The tool of claim 1 , wherein the surface is disposed on a wrench body. 6 . The tool of claim 1 , wherein the inner surface includes 12 equidistantly spaced recesses and 12 sidewalls, wherein each sidewall extends between two adjacent recesses. 7 . The tool of claim 1 , wherein the sidewall includes a third substantially straight portion between the first and second portions. 8 . The tool of claim 1 , wherein the sidewall includes a third portion between the first and second portions, and the third portion is concave. 9 . A tool adapted to engage a head of a hexagonal type fastener having a corner and a flank with a flank length, comprising: a surface having first and second recesses and a sidewall extending between the first and second recesses, wherein the sidewall includes substantially straight first and second portions respectively having first and second portion lengths, the first and second portions are angularly disposed by about 130 to 140 degrees relative to each other, thereby creating a contact point that is adapted to engage the flank at a distance of about 30 to 60 percent of half the flank length away from the corner. 10 . The tool of claim 9 , wherein the first and second portions are angularly disposed by about 133 to 136 degrees relative to each other. 11 . The tool of claim 9 , wherein the contact point is adapted to engage the flank at a distance of about 49 to 54 percent of half the flank length away from the corner 12 . The tool of claim 9 , further comprising a socket body having an axial bore, and wherein the surface is an inner surface disposed in the axial bore. 13 . The tool of claim 9 , wherein the surface is disposed on a wrench body. 14 . The tool of claim 9 , wherein the inner surface includes 12 equidistantly spaced recesses and 12 sidewalls, wherein each sidewall extends between two adjacent recesses. 15 . The tool of claim 9 , wherein the sidewall includes a third substantially straight portion between the first and second portions. 16 . The tool of claim 9 , wherein the sidewall includes a third portion between the first and second portions, and the third portion is concave.
characterised by the cross-section of the socket · CPC title
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