Abstract: A locking nut assembly comprises an axle nut, a resilient ring member and a cover member. The axle nut has a threaded bore at one end and a locking bore at the other end thereof. The threaded bore has a structural configuration which threadingly engages a bicycle axle. The outer surface of the axle nut has flat surface areas and an annular groove. The resilient ring member is disposed within the annular groove. The cover member is slidingly disposed over the outer surface of the axle nut. The cover member has a tapered, smooth outer surface and an end portion with a bore opening juxtaposed the locking bore of the axle nut. The use of the assembly prevents the untightening of the axle nut which holds the bicycle wheel in place on the bicycle frame.

Abstract: A lever arm lock for a conventional quick-release hub assembly includes a cover mountable to a first skewer rod end nut supporting a quick-release lever arm. The cover is secured to the end nut with a locking mechanism (combination, magnetic, key, etc.) and maintains the lever arm in a locked position making it impossible to remove the hub. A second skewer rod end nut opposite the first end nut is formed with a substantially smooth outer surface that is continuously inclined with respect to the axle. This surface configuration prevents removal of the locked hub assembly by turning the second end nut with a pliers or other tool. The lever arm lock also prevents the hub from being jarred loose on impact with curbs, rocks, etc. The end nut assemblies have extensions which abut the frame thereby preventing loosening thereof for unauthorized removal.