US Patent 7905561 Pull-out guide for drawer

A pull-out guide for drawers includes a first and at least one second rail, and at least one carriage with load-transmitting roller bodies being arranged between the two rails. The carriage can be coupled to the second rail, particularly when deviating from the differential course between the two rails. A rolling or sliding body is mounted in a freely movable manner on or in the carriage, through which the carriage can be coupled to a coupling part on the second rail. A recess is provided in the first rail into which the rolling or sliding body can be moved during opening of the drawer. The coupling part can de decoupled from the rolling or sliding body and passes along the carriage.