US 11,806,843 B2
Socket drive improvement
Daniel M. Eggert, Kenosha, WI (US); Christopher D. Thompson, Franklin, WI (US); Gene E. Olson, Kenosha, WI (US); and Jeffrey M. Arendt, Kenosha, WI (US)
Assigned to Snap-on Incorporated, Kenosha, WI (US)
Filed by Snap-on Incorporated, Kenosha, WI (US)
Filed on Jul. 1, 2020, as Appl. No. 16/918,712.
Application 16/918,712 is a continuation in part of application No. 16/504,718, filed on Jul. 8, 2019, granted, now 11,173,580.
Application 16/504,718 is a continuation of application No. 15/634,697, filed on Jun. 27, 2017, granted, now 10,442,060, issued on Oct. 15, 2019.
Application 15/634,697 is a continuation of application No. 14/309,954, filed on Jun. 20, 2014, granted, now 9,718,170, issued on Aug. 1, 2017.
Claims priority of provisional application 61/904,754, filed on Nov. 15, 2013.
Prior Publication US 2020/0331125 A1, Oct. 22, 2020
Int. Cl. B25B 13/06 (2006.01)
CPC B25B 13/065 (2013.01) 12 Claims
OG exemplary drawing
 
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 extending between first and second recesses, the sidewall includes substantially straight first and second portions respectively having substanitally equal first and second portion lengths, and the first and second portions extend to a third portion that is concave and disposed between the first and second portions, wherein the first and second portions are angularly disposed by about 130 to 140 degrees relative to each other, thereby creating a contact point substantially at the third portion that is adapted to engage the flank at a distance of about 75 to 90 percent of the flank length away from the corner.