The invention discloses a retractable caster which comprises a supporting base 1. The caster is characterized in that a guide groove, a shaft 2 and a wheel 3 are arranged on the supporting base; the shaft 2 can slide along the guide groove formed in the supporting base 1. The caster is retractable; when the caster is retracted, the supporting seat is in contact with the ground, and the wheel is not subjected to pressure; when the caster is released, the supporting seat is not in contact with the ground, and the wheel is subjected to pressure.
Retractable caster
2015-11-25
Patent
Elektronische Ressource
Englisch
IPC: | B60B VEHICLE WHEELS , Räder für Fahrzeuge |