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Machine translation
1. (WO1980001203) ELECTRONICALLY INDICATING TORQUE WRENCH
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/001203    International Application No.:    PCT/US1979/000511
Publication Date: 12.06.1980 International Filing Date: 16.07.1979
IPC:
B25B 23/142 (2006.01), G01L 1/14 (2006.01)
Applicants:
Inventors:
Priority Data:
966395 04.12.1978 US
Title (EN) ELECTRONICALLY INDICATING TORQUE WRENCH
(FR) CLE DYNAMOMETRIQUE A INDICATION ELECTRONIQUE
Abstract: front page image
(EN)An electronically indicating torque wrench utilizes a variable frequency stress transducer (37) to detect the level of torque applied through the wrench. The stress transducer is operatively coupled to an arm (12) of the wrench, said arm having a mechanical stress that is a function of an applied torquing force, and said arm having magnetic characteristics that vary as a function of mechanical stress induced in said arm. The output of the stress transducer is compared to a reference (54) whose calibration corresponds to desired torque settings. An indicator provides audible (34) and visual (32) indications when the applied torque equals the desired value.
(FR)Une cle dynamometrique a indication electronique utilise un transducteur de contrainte a frequence variable (37) pour detecter le niveau du couple applique par l"intermediaire de la cle. Le transducteur est couple a un bras (12) de la cle, ce bras etant soumis a une contrainte mecanique qui est fonction d"un couple de serrage applique, ce bras ayant des caracteristiques magnetiques qui varient en fonction de la contrainte mecanique induite dans cet arbre. La sortie du transducteur est comparee a une reference (54) dont le calibrage correspond a des valeurs de reglage de couple desirees. Un indicateur fournit des indications sonores (34) et visuelles (32) lorsque le couple de serrage applique est egal a la valeur desiree.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)