Patent ID: 7406900
Filing Date: 2008-08-05
Classification: B25B

Abstract:
1. A tension alert hand tool, comprising: a driving portion having one end being an opening head; another end of the driving portion being formed as a buckling unit; the buckling unit being formed by an upper teethed block and a lower teethed block; the upper teethed block being engageable to and bidirectionally moveable through the lower teethed block; an elastic unit enclosing the driving portion and being installed above the buckling unit; a handle being formed with a receiving groove for receiving the buckling unit and the elastic unit of the driving portion and a tension alarm device; a lateral side of the handle being formed with a through hole which is communicated to the handle; a cap covering upon an upper opening of the receiving groove; the driving portion passing through the cap; the cap and the buckling unit will compress the elastic unit; a lateral side of the handle being formed with a recess and a cover covering upon the recess; and the recess being communicated to the through hole; and the tension alarm device including a sensor switch, an alarm unit and at least one battery; the at least one battery serving to supply power to the alarm unit and the sensor switch; the sensor switch being conducted to the alarm unit; the sensor switch being installed in the receiving groove of the handle and being aside the upper teethed block of the buckling unit; the alarm unit being installed in the through hole of the handle; the battery being received the recess of the handle; and an outer side of the battery being covered by the cover.