| 摘要 |
PCT No. PCT/DE90/00671 Sec. 371 Date May 1, 1992 Sec. 102(e) Date May 1, 1992 PCT Filed Sep. 5, 1990 PCT Pub. No. WO91/07115 PCT Pub. Date May 30, 1991.The invention is directed to an electric power driven toothbrush having a four-bar linkage (8) disposed in the handle section, the input end thereof being driven by an electric motor (2) through a train of spur gears, while the output end thereof drives in an oscillatory manner an output shaft (15) within an angular range of +/-35 DEG , approximately. The output shaft (15) is suitable for coupling engagement with a toothbrush section through a bevel gear train, and the axis of rotation of the toothbrush section forms an approximately right angle with the axis of the output shaft (15).
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