A multi-speed transmission assembly for a rotary power tool. The transmission assembly includes a plurality of transmission stages, with at least two of the transmission stages employing a movable reduction element that permits the transmission stage to be operated in an active mode and na inactive mode. The movable reduction elements are coupled to a switching mechanism that switches the reduction elements in a predetermined manner to provide at least three-gear reduction or speed ratios.
申请公布号
WO02059500(A1)
申请公布日期
2002.08.01
申请号
WO2002US00902
申请日期
2002.01.10
申请人
BLACK & DECKER INC.;POTTER, CHRISTINE;MILBOURNE, RODNEY;HAGAN, TODD, A.;BOWERS, MICHAEL, C.
发明人
POTTER, CHRISTINE;MILBOURNE, RODNEY;HAGAN, TODD, A.;BOWERS, MICHAEL, C.