Patent ID: 7823464
Filing Date: 2010-11-02
Classification: G01L,G05G

Abstract:
1. A joystick sensor apparatus, comprising: a load cell having an outer peripheral frame with a central concentric hub area, said load cell having beam members positioned between said central hub area and said outer peripheral frame, a plurality of strain gauges positioned on said beam members and having at least a first pair of strain gauges on one of said beams and at least a second pair of strain gauges on another beam member, and a joystick coupled to said central area and operative when moved to cause said gauges when biased to provide outputs proportional to the X-Y movement of said joystick, wherein said load cell, comprises: wherein said top diaphragm member is a convoluted isolation diaphragm, with the tops of said convolutions facing said beams when said diaphragm covers the same.