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  2. Roller chain - Wikipedia

    Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held ...

  3. List of discontinued Volkswagen Group petrol engines

    20v: four unequal-length valves per cylinder, 20 valves in total, roller finger cam follower, self-adjusting hydraulic tappets, simplex roller chain relay-driven double overhead camshaft (DOHC) with ECU-controlled variable valve timing for both inlet and exhaust valves, compression ratio: 10.8:1 aspiration

  4. Window blind - Wikipedia

    A window blind is a type of window covering. There are many different kinds of window blinds which use a variety of control systems. A typical window blind is made up of several long horizontal or vertical slats of various types of hard material, including wood, plastic or metal which are held together by cords that run through the blind slats.

  5. Bicycle chain - Wikipedia

    The chain in use on modern bicycles has a 1 ⁄ 2 inch (12.7 mm) pitch, which is the distance from one pin center to another, ANSI standard #40, where the 4 in "#40" indicates the pitch of the chain in eighths of an inch; and ISO standard 606 (metric) #8, where the 8 indicates the pitch in sixteenths of an inch.

  6. Empty string - Wikipedia

    Formal theory. Formally, a string is a finite, ordered sequence of characters such as letters, digits or spaces. The empty string is the special case where the sequence has length zero, so there are no symbols in the string.

  7. Wrench - Wikipedia

    chain whip: A self-tightening wrench that engages the teeth of a chain drive sprocket, and used typically to remove bicycle cogsets. Similar to a strap wrench, but uses positive engagement rather than friction, and so needs to grab only one end of the chain. specialty strap wrench oil-filter wrench chain wrench: strap wrench oil filter wrench ...

  8. Corkscrew (Alton Towers) - Wikipedia

    Corkscrew was a steel roller coaster located at Alton Towers theme park, near Alton in the English shire county of Staffordshire, United Kingdom.Corkscrew was manufactured for Alton Towers by Dutch company Vekoma, engineered by Werner Stengel of German Ing.-Büro Stengel GmbH (Ingenieur Büro Stengel).

  9. Actuator - Wikipedia

    Wheel and axle: Hoist, winch, rack and pinion, chain drive, belt drive, rigid chain and rigid belt actuators operate on the principle of the wheel and axle. By rotating a wheel/axle (e.g. drum, gear, pulley or shaft) a linear member (e.g. cable, rack, chain or belt) moves. By moving the linear member, the wheel/axle rotates.