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A lock ring, also spelled lock-ring, is a late Bronze Age penannular (incomplete ring) hair ornament. Typically in gold, the intricate, decorative jewellery is recognized for its highly skilled workmanship. The name is derived from its suggested use as a hair fastener.
A lock ring is a threaded washer used to prevent components from becoming loose during rotation. They are found on an adjustable bottom bracket and a track hub of a bicycle .
Beveled retaining rings. Beveled retaining rings feature a 15° beveled or angled edge. This angle allows the ring to wedge itself between the groove and the retained part until it can go no farther, effectively “locking” everything in place. Think of placing a cork in a bottle.
Lock and key. A typical modern padlock and its keys. A lock is a mechanical or electronic fastening device that is released by a physical object (such as a key, keycard, fingerprint, RFID card, security token or coin), by supplying secret information (such as a number or letter permutation or password ), by a combination thereof, or it may only ...
A standard beadlock is designed to clamp the tire bead between an outer and an inner ring. The inner ring may be welded onto a standard wheel increasing wheel width by anywhere from 1½ to 2 inches or may be formed as part of the wheel when the wheel is made in the factory.
A ring laser gyroscope (RLG) consists of a ring laser having two independent counter-propagating resonant modes over the same path; the difference in phase is used to detect rotation. It operates on the principle of the Sagnac effect which shifts the nulls of the internal standing wave pattern in response to angular rotation.
The modern No. 8 knife consists of 5 pieces (formerly 4); the handle, the blade, the pivot or axle, the metal collar and the locking ring or "Virobloc". The blade is quite thin, only 1.68mm (.066 inches), which helps keep its weight to only 45g (1.6 ounces).
Because the lock ring prevents the sprocket from unscrewing, it can be used for left-side drive without requiring special left hand threaded parts. Note that if a normal right-side-drive crankset is installed backwards to create a left-side-drive bicycle, the threaded pedal holes at the end of the crank arms would be reversed.
A circlip (a portmanteau of "circle" and "clip"), also known as a C-clip, snap ring, or Jesus clip, is a type of fastener or retaining ring consisting of a semi-flexible metal ring with open ends that can be snapped into place into a machined groove on a dowel pin or other part to permit rotation but to prevent axial movement. There are two ...
This is achieved through 'blocker rings' (also called 'baulk rings'). The synchro ring rotates slightly because of the frictional torque from the cone clutch. In this position, the dog clutch is prevented from engaging.