Replaceable electronic spanner

Details Replaceable electronic spanner Replaceable electronic spanner

2007-09-04

2007-09-04

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Dynamometers

Responsive to torque

C073S862220, C073S862230

Reexamination Certificate

active

11036700

ABSTRACT:
A replaceable electronic spanner comprises a spanner body; at least one electronic device being installed to the spanner body; each electronic device being installed with a display; at least one end of the spanner body being formed with an inserting opening; one side of the inserting opening being installed with a stain gauge which is connected to the electronic device; the electronic device calculating the variation of resistance of the stain gauge so as to get the twisting force value of the spanner and then displays the twisting force on the display; a display head having a driving portion; one end of the driving portion being extended with an insertion section capable of being movably inserted into the inserting opening so as to combine the spanner body to the sensing head.

REFERENCES:
patent: 6234051 (2001-05-01), Bareggi
patent: 6295898 (2001-10-01), Hsieh

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