A feedthrough electronic device which has an electronic element with a feedthrough hole and a center conductor which penetrates the electronic element. The center conductor is composed of a lead line portion and a spring portion which protrudes from the lead line portion and contacts with an inner periphery...http://www.google.fr/patents/US5546058?utm_source=gb-gplus-shareBrevet US5546058 - Feedthrough LC filter with a deformation preventing spring
Feedthrough LC filter with a deformation preventing spring
