Patent ID: 7985140

Claim:
An Oldham-style coupling assembly for transmitting rotational motion between two rotary shafts, said coupling assembly comprising: a driving shaft supported for rotation about a first axis, said driving shaft including a driving lug having opposed contact faces disposed generally orthogonal to said first axis, said contact faces tapered in a converging axial direction away from said driving shaft; a driven shaft supported for rotation about a second axis generally collinear with said first axis, said driven shaft including a driven lug supported opposite said driving lug, said driven lug having opposed contact faces disposed generally transverse to said second axis and tapered in a converging axial direction away from said driven shaft, and with one of said driven and driving lugs being bifurcated into half-lugs spaced apart one from another on opposite sides of the respective said first and second axis; a coupling plate operatively disposed between said driving and driven shafts, said coupling plate including a driving slot having tapered side walls corresponding to said contact faces of said driven lug for engaging said driven lug while enabling transverse relative sliding motion therebetween, and a driven slot having tapered side walls corresponding to said contact faces of said driving lug for engaging said driving lug while enabling transverse relative sliding motion therebetween; and a biasing element configured to establish a continuous axial compression force between each of said driven and driving lugs and said coupling plate, said biasing element disposed between one of said driven and driving lugs and said respective driven and driving shafts.