Global Patent Index - EP 0723839 B1

EP 0723839 B1 2000-01-26 - Torque wrench

Title (en)

Torque wrench

Title (de)

Drehmomentschlüssel

Title (fr)

Clé dynamométrique

Publication

EP 0723839 B1 (DE)

Application

EP 95118584 A

Priority

DE 29501355 U

Abstract (en)

[origin: EP0723839A1] The torque wrench has a first shaft (4) with a handle on its outer end, a second shaft (5) rigidly attached to the tool head (1), a pivot bolt (6) linking the shafts with its axis perpendicular to the tightening direction, a spring-loaded locking element and an evaluation unit. The locking element, which is mounted between shaft holders (9,11), locks the shafts together below a defined torque level and releases them above it to enable limited relative movement. A measurement element (20) measures the material stresses acting on one shaft. The evaluation unit converts the measurement value into a torque which is displayed (18) with the defined torque value.

IPC 1-7

B25B 23/143

IPC 8 full level

B25B 23/142 (2006.01); B25B 23/143 (2006.01)

CPC

B25B 23/1425 (2013.01); B25B 23/1427 (2013.01)

DCS

DE FR GB IT SE

DOCDB simple family

DE 29501355 U1 19950302; EP 0723839 A1 19960731; EP 0723839 B1 20000126