US Patent 8485482 Retaining system

A retaining system according to example embodiments of the present invention may include a base plate that includes a cam and alignment guides, where the cam defines both a locked position and an unlocked position, and a support shoe that includes alignment tabs and a locking tab, where the support shoe is configured to be inserted into the alignment guides when the cam member is in the unlocked position. Upon insertion of the support shoe into the alignment guides, the cam may be configured to engage the locking tab of the support shoe and bias at least one of the alignment tabs into engagement with at least one of the alignment guides as the cam advances from the unlocked position to the locked position.