The present invention relates to a cordless braking system for a mobility-aiding device, such as a wheeled walker (a rollator) or a transport chair. The cordless braking system includes a brake actuating linkage, disposed inside the leg and handlebar members of the mobility-aiding device, which extends...http://www.google.es/patents/US7219906?utm_source=gb-gplus-sharePatente US7219906 - Height-adjustable cordless brake
