Tightening spanner with ultrasonic control of the tightening tension

• Main Author: MICHEL SOREL, JACQUES AUBERT ET JACQUES DEMASSIEUX
• Format: Patent
• Language: English; French
• Published: 01.03.1985
• Edition: 4
• Subjects: HAND TOOLS; MANIPULATORS; MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PERFORMING OPERATIONS; PHYSICS; PORTABLE POWER-DRIVEN TOOLS; TESTING; TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING; TRANSPORTING

Ratchet spanner in which is incorporated an ultrasonic transducer assembly 14 for measuring the tightening tension of a bolt 10. The assembly 14 is mounted inside a cavity 12 formed in the hollow body 2 of the spanner by the intermediary of a swivel-type linkage system 26 allowing angular displacements of the assembly 14 with respect to the body of the spanner. The invention ensures a perfect contact of the head of the transducer with the surface 56 of the head of the bolt even in the case in which the tightening spanner is inclined with respect to its normal position during the tightening. CLE A CLIQUET DANS LAQUELLE EST INCORPORE UN ENSEMBLE TRANSDUCTEUR ULTRA-SONORE 14 POUR LA MESURE DE LA TENSION DE SERRAGE D'UN BOULON 10.L'ENSEMBLE 14 EST MONTE A L'INTERIEUR D'UNE CAVITE 12 MENAGEE DANS LE CORPS CREUX 2 DE LA CLE PAR L'INTERMEDIAIRE D'UN SYSTEME ROTULAIRE DE LIAISON 26 AUTORISANT LES DEPLACEMENTS ANGULAIRES DE L'ENSEMBLE 14 PAR RAPPORT AU CORPS DE LA CLE.L'INVENTION PERMET D'ASSURER UN CONTACT PARFAIT DE LA TETE DU TRANSDUCTEUR SUR LA SURFACE 56 DE LA TETE DU BOULON MEME DANS LE CAS OU LA CLE DE SERRAGE EST INCLINEE PAR RAPPORT A SA POSITION NORMALE AU COURS DU SERRAGE.