Patent ID: 9308990
Filing Date: 2016-04-12
CPC Classification: B60T,B64C,F16D,H02K

Claim Text:
1. A park brake system comprising: a tapered motor shaft having a first diameter and a second diameter, the second diameter being greater than the first diameter; a spring disposed at least partially around a circumference of the tapered motor shaft; a voice coil disposed at least partially around a circumference of a bobbin comprising a ferromagnetic insert; a first one-way clutch housed at least partially within the bobbin, the first one-way clutch disposed coaxial to the tapered motor shaft; and an annular magnet disposed coaxial to the tapered motor shaft and proximal to the first one-way clutch; wherein, in response to a first voltage applied to the voice coil, the first one-way clutch translates axially in a first direction with respect to the tapered motor shaft and engages with the second diameter, and wherein, in response to a second voltage applied to the voice coil, the first one-way clutch translates axially in a second direction and is disposed about the first diameter.