Torque wrench with angle sensor without external reference

(19)

(11)

EP 1 022 097 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	22.01.2003 Bulletin 2003/04

(43)	Date of publication A2:
	26.07.2000 Bulletin 2000/30

(21)	Application number: 00200210.3

(22)	Date of filing: 20.01.2000

(51)	International Patent Classification (IPC)⁷: B25B 23/142

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

22.01.1999 IT MI990111

(71)	Applicant: BLM S.a.s. di L. Bareggi & C.
	20095 Cusano Milanino (Milano) (IT)

(72)	Inventor:
	Bareggi, Luigi 20129 Milano (IT)

(74)	Representative: Faraggiana, Vittorio, Dr. Ing.
	Ingg. Guzzi & Ravizza S.r.l. Via Vincenzo Monti 8 20123 Milano 20123 Milano (IT)

(54)	Torque wrench with angle sensor without external reference

(57) An electronic torque wrench comprises a head (12) for coupling with a member to be tightened, a first sensor (14) for detecting the torque generated on the head upon moving the wrench, a second sensor made up of a gyroscope (17) for detecting angular rotation of the head, means of calculation to find from the sensor detection information considered significant.

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