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Weight: 4.12g. 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 . Lokring is another form of fastener used in the automotive and air condition industries: these fittings are often confused with lockrings.
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.
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 be able to be opened from one side, such as a door chain.
A beadlock or bead lock is a mechanical device that secures the bead of a tire to the wheel of a vehicle. Tires and wheels are designed so that when the tire is inflated, the tire pressure pushes the bead of the tire against the inside of the wheel rim so that the tire stays on the wheel and the two rotate together.
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 original generation of FD lenses featured a silver colored locking ring at the base. Only the locking ring turns to lock the lens to the camera body; the lens body remains stationary. The later New FD lenses have a black mount which includes a lens release button. Note that some lenses listed below were marketed in only one generation.
Jewellery worn in labia piercings may have a fetish purpose. Rings or other specialised jewellery may be worn to block access to the vagina, as a form of short-term or long-term chastity piercing. Other chastity devices might also be worn that make use of the piercing, sometimes incorporating locks .
Hydrolock (a shorthand notation for hydrostatic lock or hydraulic lock) is an abnormal condition of any device which is designed to compress a gas by mechanically restraining it; most commonly the reciprocating internal combustion engine, the case this article refers to unless otherwise noted.
Chinese linking rings. The Chinese linking rings is a classic of illusion magic in which solid metal rings appear to link and unlink, pass through each other, and form chains and other complex patterns and configurations. The rings may even be handed out to audience members for examination.