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When a patient trying to sit on a wheelchairs, he may forget to lock it first, which can cause a serious aftermath like tumbling or hurting his spine.
Therefore, we design an auto-brake Installed under the seat which would lock the wheels automatically when there is no one sitting on the wheelchair. It can be unlocked with the weight of the patient when he sitting on the wheelchair.
The most important of all, we utilize a physical principle instead of counting on electricity to solve the problem.