Patent ID: 7726900

Claim:
A mechanical and electrical connection system comprising: a driving shaft connected to an axial translation device and having an end comprising an annular groove proximate to an axial end extension, the axial end extension having an axial height (H 1 ); a driven shaft approximately coaxial with the driving shaft, the driven shaft having an end comprising an annular groove proximate to an axial end extension, the axial end extension having an axial height (H 2 ); and a generally cylindrical coupling connecting the ends, the coupling including: a first annular shoulder with a surface having a shape complementary to the shape of the annular groove proximate to the axial end extension of the driving shaft without clearance; a second annular shoulder with a surface having a shape that fits into the annular groove proximate to the axial end extension of the driven shaft, a radial clearance provided between the surfaces of the second annular shoulder and the annular groove of the driven shaft; and a cavity containing the axial end extensions of the shafts and having an axial height, the axial height of the cavity strictly greater than the sum of the axial heights (H 1 ) and (H 2 ) of the axial end extensions, a helical spring in direct mechanical and electrical contact with both the axial end extension of the driving shaft and the axial end extension of the driven shaft, wherein the driving shaft and driven shaft are movable along an overall axial direction, and are capable of transmitting approximately axial forces, and wherein the end of the driven shaft is capable of making direct contact with the end of the driving shaft.