Electronic measuring tape
AssigneeHaglof Sweden AB
InventorStefan Haglöf
Life of this patent
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Abstract
An electronic measuring tape that includes a roller onto which the measuring tape is arranged to be wound up onto and wound out from through the roller being rotated, a first end of the measuring tape is attached in the roller, and where the roller is located inside a housing. A rolled up measuring tape is arranged in loops on the roller. All loops are in direct contact with the surface of the roller, an angle sensor is arranged at the roller to record an angle of rotation during rotation of the roller. An electronic circuit converts the angle of rotation into a length that corresponds to the length by which the measuring tape has been withdrawn from the housing, and the measuring tape records absolute values.
Claims20
An electronic measuring tape (11) that comprises a roller (8) on which the measuring tape (12) is arranged to be rolled up onto and rolled out from by the rotation of the roller (8), a first end (3) of the measuring tape (12) being attached to the roller (8), and where the roller (8) is located in a housing (9a, 9b), characterised in that a rolled-up measuring tape (12) is arranged in loops on the roller (8), of which all loops are in direct contact with the surface (1) of the roller (8), in that an angle sensor (6) is arranged at the roller (8) arranged to record an angle of rotation during the rotation of the roller (8), and in that an electronic circuit (15) is arranged to convert the said angle of rotation into a length that corresponds to the length by which the measuring tape (12) has been withdrawn from the said housing (9a, 9b), and in that the measuring tape (12) records absolute values.
Dependencies are inferred from the claim text.