Patent ID: 9539876
Date: 2017-01-10
CPC Classifications: A61G,B60B,B60G,B60Y,F16F

Claim:
1. A centralizing unit comprising a suspension system with at least one support member comprising: an outer longitudinal element enclosing a lumen, comprising a first outer slit and a second outer slit longitudinally spaced from said first outer slit along an outer slit longitudinal axis; an inner longitudinal element slidable in said lumen, comprising a first inner slit and a second inner slit longitudinally spaced from said first inner slit along an inner slit longitudinal axis, said inner and outer longitudinal elements are slidably movable relative to each other in a longitudinal direction within said lumen; a first sliding pin provided in said first outer slit and said first inner slit; a second sliding pin provided in said second outer slit and said second inner slit; and a suspension spring connected with a first end to said first sliding pin and with a second end to said second sliding pin; wherein said inner and outer longitudinal elements are configured whereby when subjected to compression or extension stresses less than a predetermined threshold value, said first and second sliding pins maintain a fixed distance relative to each other.