Patent ID: 9630807
Date: 2017-04-25
CPC Classifications: B66B,Y02B

Claim:
1. A variable mass elevator apparatus with an external control, comprising: an elevator shaft; an elevator car, disposed inside said elevator shaft; a traction sheave, comprising a sheave and a motor; an elevator cable, coupled to the elevator car and disposed around the traction sheave, wherein the traction sheave rotates and moves the elevator cable and elevator car; a first floor control panel, comprising a plurality of buttons corresponding to floors of a building, wherein the first floor control panel is disposed next to an elevator entrance on each floor of a building outside of the elevator car; a first electronic scale, disposed in front of the floor control panel to weigh a first passenger, wherein the first passenger inputting a first desired floor on the floor control panel stands on the electronic scale when inputting said first desired floor; a first mass storage area, disposed adjacent to the elevator shaft on an opposite side of an entrance to the elevator car and on the first desired floor; a first mass, stored in the first mass storage area; a first mass conveyer, coupled to the first mass storage area on the first desired floor; a control computer, coupled to the first floor control panel, the first electronic scale, and the first mass conveyer, wherein the control computer receives a first weight of the first passenger from the first electronic scale, the first desired floor from the first floor control panel, and instructs the first mass conveyer to move the first mass corresponding to the first weight to be coupled to the elevator cable as a counterweight to the first passenger; wherein, when the first passenger is inside the elevator car after the first mass is coupled to the elevator cable, the control computer instructs the traction sheave to rotate and move the elevator cable and the elevator car to the first desired floor.