F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
F16B 23/00 (2006.01) B25B 15/00 (2006.01) F16B 33/02 (2006.01)
Patent
CA 2481162
A threaded screw fastener is provided with a head portion that has integrally incorporated therein dual drive structure whereby the single threaded screw fastener can be rotatably driven by alternative rotary drive socket implements or tools, such as, for example, hexagonally configured or Phillips head configured drive tools or implements, or a combination drive tool. A drive socket implement or tool also has integrally incorporated therein both hexagonally configured drive structure, Phillips head drive structure, and domed contour structure for not only structurally engaging both the hexagonally configured structure and the Phillips head structure integrally incorporated upon the head portion of the threaded screw fastener, but in addition, accommodates the low profile domed structure of the head portion of the threaded screw fastener. Lastly, the threaded screw fastener also comprises thread structure wherein each thread of the threaded screw fastener comprises rearward and forward flank surfaces which effectively serve to simultaneously enhance the pull-out resistance characteristics ar properties of the threaded screw fastener while reducing the installation or insertion torque characteristics or properties of the threaded screw fastener.
Gong Yongping
Panasik Cheryl L.
Finlayson & Singlehurst
Illinois Tool Works Inc.
LandOfFree
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