Wheel system
US 9004120 B2
ABSTRACT
A wheel assembly includes a rim, a rib surrounding and radially spaced apart from the rim, and a resilient member that engages the rib. The resilient member is tied to the rim, such that the rim is resiliently held in relation to the round rib at least in part by tension in the resilient member
NEW Britek Patent issue 4/14/2015 US 9,004,120 B2 Run Pressure, Ambient or Vacuum Pressure!
https://www.google.com/patents/US9004120