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  2. Coil binding - Wikipedia

    en.wikipedia.org/wiki/Coil_binding

    Spiral Binding Company, started in 1932, was "the first mechanical binding company in the United States". [2] It created the original metal spiral-coil binding and later the Spiralastic, a popular plastic coil to replace wire during World War II. [3]

  3. Bookbinding - Wikipedia

    en.wikipedia.org/wiki/Bookbinding

    Spiral coil binding uses a number of different hole patterns for binding documents. The most common hole pattern used is 4:1 pitch (4 holes per inch). However, spiral coil spines are also available for use with 3:1 pitch, 5:1 pitch and 0.400-hole patterns.

  4. Comb binding - Wikipedia

    en.wikipedia.org/wiki/Comb_binding

    Comb binding (sometimes referred to as "cerlox" or "surelox" binding) is one of many ways to bind pages together into a book. This method uses round plastic spines with 19 rings (for US Letter size) or 21 rings (for A4 size) and a hole puncher that makes rectangular holes.

  5. Coil winding technology - Wikipedia

    en.wikipedia.org/wiki/Coil_winding_technology

    Structure of a coil with an even number of turns per. Given: Wire-Ø Cu 0,3 mm → CU1L=0,334 mm (According to the table) Coil width: should be 9 mm // 150 turns, coil inner diameter 8mm. a) Calculation of the winding width In the first iteration step, a winding with the same number of windings per layer is assumed or taken as a basis.

  6. Zipper - Wikipedia

    en.wikipedia.org/wiki/Zipper

    Coil zippers now form the bulk of sales of zippers worldwide. The slider runs on two coils on each side; the teeth are formed by the windings of the coils. Two basic types of coils are used: one with coils in spiral form, usually with a cord running inside the coils; the other with coils in ladder form, also called the Ruhrmann type.

  7. Electromagnetic coil - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_coil

    An electromagnetic coil is an electrical conductor such as a wire in the shape of a coil (spiral or helix). [ 1 ] [ 2 ] Electromagnetic coils are used in electrical engineering , in applications where electric currents interact with magnetic fields , in devices such as electric motors , generators , inductors , electromagnets , transformers ...

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