Methods of manufacturing coils and apparatus for same

  • US 6,264,183 B1
  • Filed: 08/19/1999
  • Issued: 07/24/2001
  • Est. Priority Date: 08/19/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A spring assembly comprising:

  • a coil having first and second ends, a length there between, an interior and a first reduced diameter portion located a spaced distance from the first end; and

    a core having a length less than the length of the coil and inserted in the coil interior between the second end of the coil and the first reduced diameter portion of the coil, whereby the coil is axially compressible without axially compressing the core.

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