Hand tool with at least two alarm devices

Details Hand tool with at least two alarm devices Hand tool with at least two alarm devices

2006-05-31

2008-10-21

Hofsass, Jeff (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C073S760000, C073S862381, C073S024050

Reexamination Certificate

active

07439871

ABSTRACT:
A hand tool with at least two alarm devices comprises a flat handle with having a rectangular shape which is formed by has two first parallel surfaces and two second parallel narrow surfaces connected between the two first surfaces; at least one end of the handle being formed with a driving head; an output device having a sensing unit; the sensing unit being electrically connected to a strain gauge installed at a predetermined position of the handle; and the output device having an alarm unit; the alarm unit of the output device being installed at the connection of the handle and the driving head. An auxiliary alarm unit is installed at one surface of the handle, or the auxiliary alarm unit is installed at an inclined recess between two adjacent surfaces of the handle or the auxiliary alarm unit is arranged across two adjacent surfaces of the handle.

REFERENCES:
patent: 4883022 (1989-11-01), Barker
patent: 6844819 (2005-01-01), Luebke et al.
patent: 6920811 (2005-07-01), Hsien
patent: 6931969 (2005-08-01), Hsien
patent: 2006/0272456 (2006-12-01), Hsien
patent: 2007/0273917 (2007-11-01), Encrenaz et al.

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