| 摘要 |
An elbow or right angle attachment for a power tool converts the torque of the power tool drive shaft to a transverse shaft which is supported by a housing to extend angularly with respect to the drive shaft. A pinion gear is mounted on the power tool drive shaft and a face gear is mounted on the transverse shaft interiorly of the housing. The face gear and pinion gear engage one another when the elbow attachment housing is mounted to the power tool housing. The pinion gear has teeth with a face width which allows for variability in the precise mounting of the elbow attachment housing to the power tool housing, without any significant resultant detriment to operation of the device.
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