ARRANGEMENT AND A METHOD FOR AUDITING CAR GUIDE RAIL STRAIGHTNESS
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Dec 9, 2024
filing date -
Dec 9, 2024
priority date (Note) -
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Abstract
The invention relates to an arrangement for auditing straightness of a car guide rail, the arrangement comprising: a car guide rail mounted in an elevator shaft; an elevator car connected to the car guide rail via a guide member, said guide member, in a straightness auditing mode being adapted so that the horizontal distance between the elevator car and the car guide rail to be audited is constant; a plumb line stabilized in the elevator shaft adjacent to the car guide rail; an indicator detachably attached to the elevator car, in vicinity of the plumb line; at least one visual recording device detachably attached to the elevator car, facing the plumb line and the indicator, for recording a displacement of the indicator relative to the plumb line; and a memory for storing recorded relative displacement. The invention also relates to a method for auditing straightness of a car guide rail.
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