Machine element or mechanism – Gearing – Directly cooperating gears
Patent
1998-08-19
2000-07-18
Bucci, David A.
Machine element or mechanism
Gearing
Directly cooperating gears
192 215, F16H 114, F16D 2700
Patent
active
060891157
ABSTRACT:
An angular transmission using magnetorheological fluid (MR fluid) to transmit movement between two (2) shafts not aligned on the same axis to each other to provide an infinite variable ratio instead of the fixed ratios present in known prior art gear driven angular transmissions by controlling the magnetic field applied to the magnetorheological fluid (MR fluid) through the use of one (1) or more electric coil(s) generating a magnetic field. In particular, the angular transmission using magnetorheological fluid (MR fluid) in accordance with a preferred embodiment of the present invention includes a pair of conical shaped hollow heads, one connected to an input shaft and one connected to an output shaft, the input shaft, the output shaft and the conical shaped hollow heads being assembled inside of a housing where the input shaft and the output shaft are mounted at an angle to each other (i.e., are not axially aligned), the space or gap between the two (2) conical shaped hollow heads being filled with magnetorheological fluid (MR fluid). At least one (1) electric coil and, more preferably, a pair, or a multitude, of electric coils are installed inside the two (2) hollow heads.
The magnetorheological fluid (MR fluid), when exposed to a magnetic field, changes its viscosity to provide for increased shear stress resistance of the magnetorheological fluid (MR fluid). This increase in viscosity provides for the motion transmission between each of the conical shaped hollow heads and consequently to each of the input shaft and the output shaft in a rate, or ratio, proportional to the magnetic field generated by the electric coil(s). The shape of the electric coil(s) could be of a multitude of possible designs to produce a magnetic field having desired characteristics. Control of the electric coil(s) is provided by an electronic controller which interfaces with a multitude of sensors which provide sensorial information from various operation monitoring systems.
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Bucci David A.
Dana Corporation
Hansen Colby
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