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2. Coil spring - Wikipedia

   en.wikipedia.org/wiki/Coil_spring

   A coil spring is a mechanical device that is typically used to store energy and ... Popular Science article on the basics of steel coil springs manufacturing.

3. Simmons Bedding Company - Wikipedia

   en.wikipedia.org/wiki/Simmons_Bedding_Company

   The pocketed coil is the basis for the Simmons Beautyrest mattress brand, which was introduced in 1925. [6] Although the new manufacturing technology greatly reduced its cost, at the time of its introduction a Beautyrest mattress sold for $39.50, three to four times more than the typical price for a standard wire mattress. [7]

4. Mattress coil - Wikipedia

   en.wikipedia.org/wiki/Mattress_coil

   The mattress coil market is quite concentrated – the leading suppliers are Leggett & Platt (founded 1883) of Carthage, Missouri and AGRO International (founded 1948) of Bad Essen, Germany. Others include HSM (company) (formally Hickory Springs, founded 1944) of Hickory, North Carolina ; Spinks (founded 1840) of Leeds , United Kingdom and ...

5. King Koil - Wikipedia

   en.wikipedia.org/wiki/King_Koil

   The company shifted to a licensing model. As of 2019, it has over 30 licensees and is operating in more than 90 countries. [5]King Koil ventured into the United Arab Emirates in 1993, collaborating with its licensee, Dubai Furniture Manufacturing Company (DFMC), which became the first licensee in the Middle East, and now it operates 15 King Koil showrooms in the UAE.

6. Spring (device) - Wikipedia

   en.wikipedia.org/wiki/Spring_(device)

   Zero-length springs are made by manufacturing a coil spring with built-in tension (A twist is introduced into the wire as it is coiled during manufacture; this works because a coiled spring unwinds as it stretches), so if it could contract further, the equilibrium point of the spring, the point at which its restoring force is zero, occurs at a ...

7. Marshall coil - Wikipedia

   en.wikipedia.org/wiki/Marshall_coil

   Marshall produced pre-compressed cylindrical coil springs, each sewn inside an individual cotton fabric pocket, which provided uplifting support on its own. When fitted together, the coils became an independent suspension system that contoured to each person's form and weight, providing unsurpassed support and comfort.