F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
F16B 23/00 (2006.01) B25B 13/48 (2006.01) B25B 13/50 (2006.01) B60B 3/16 (2006.01) B60B 29/00 (2006.01) F16B 43/00 (2006.01) F16B 1/00 (2006.01)
Patent
CA 2114549
ABSTRACT OF THE DISCLOSURE A toothed fastener having a threaded portion, and a head portion provided integral to the threaded portion, the head portion having a toothed outer periphery and a pressure transmitting surface. The fastener also has a friction reducing means comprising a first part having a first pressure transmitting surface and a second part having second and third pressure transmitting surfaces. The second part is located between the head portion of the fastener and the first part. A solid dry lubricant material in the form of an annulus is located between the first and second parts to reduce friction therebetween, whereby the first part can be held stationary relative to the object to be fastened so that the dry lubricant material acts as a bearing between the head portion of the fastener and the fastened object when the fastener is tightened or loosened by engaging the toothed outer periphery. A fastening tool having a toothed portion for tightening and loosening the toothed fastener, together with a modified automotive wheel incorporating toothed wheel fasteners is also disclosed. The toothed wheel fastener facilitates more efficient fastening and removal of a wheel as well as improved security against theft.
Matthews Norman Leslie
Moffat & Co.
LandOfFree
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