Patent ID: 8987616
Filing Date: 2015-03-24
Classification: A61G,G01G

Abstract:
1. A weight scale for a patient lift system, the weight scale comprising: a frame assembly; a plurality of force sensors coupled to the frame assembly, each force sensor of the plurality of force sensors configured to generate a signal indicative of a measured weight force; a base frame of the frame assembly comprising a first leg having a first end and an opposing second end, the first leg defining a first channel between the first end and the second end and a second leg having a first end and an opposing second end, the second leg defining a second channel between the first end and the second end of the second leg; a first castor support link positioned within the first channel, the first castor support link having a first end defining a first slot and an opposing second end defining a second slot; a first force sensor of the plurality of force sensors positioned within the first slot and coupled to the first leg at the first leg first end; a second force sensor of the plurality of force sensors positioned within the second slot and coupled to the first leg at the first leg second end; a second castor support link positioned within the second channel, the second castor support link having a first end defining a third slot and an opposing second end defining a fourth slot; a third force sensor of the plurality of force sensors positioned within the third slot and coupled to the second leg at the second leg first end; a fourth force sensor of the plurality of force sensors positioned within the fourth slot and coupled to the second leg at the second leg second end; a foot rest panel coupled to the frame assembly, the foot rest panel configured to support a patient; an angle sensor operatively coupled to the frame assembly, the angle sensor configured to generate a signal indicative of an angle of the frame assembly with respect to a horizontal reference plane; and a controller coupled in signal communication with each force sensor and the angle sensor, the controller comprising one or more processers configured to receive signals from each force sensor and the angle sensor to determine an actual weight force of the patient.