Locking mechanism

Details Locking mechanism Locking mechanism

A - Human Necessities

61

C

A61C 17/22 (2006.01)

Patent

CA 2639269

The present invention provides a locking mechanism position,ed in a toothbrush handle having interchangeable heads, comprising a shaft that extends the length of the handle, with an elliptical tip at one end and receiving means at the opposite end. A key may be interconnected to the receiving means to permit the elliptical tip to rotate. In a first position, the elliptical tip permits the removal and replacement of an interchangeable head, because the longer dimensions of the elliptical tip and an elliptically cross-sectioned opening in the interchangeable head coincide. In a second, rotated position, the elliptical tip locks within the interchangeable head, as the longer dimensions no longer coincide.

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