Method of determining a horizontal profile line defined by...

Details Method of determining a horizontal profile line defined by... Method of determining a horizontal profile line defined by...

2007-11-20

2007-11-20

Tarcza, Thomas H. (Department: 3662)

Optics: measuring and testing

Angle measuring or angular axial alignment

Apex of angle at observing or detecting station

Reexamination Certificate

active

11256470

ABSTRACT:
The invention provides a method of determining a horizontal profile line defined by walls that are essentially vertical, by using a pointer having two calibrated reference points, the method comprising the following successive steps:a) placing the pointer horizontally in contact with a point on the profile line to be determined;b) from an origin point, measuring in succession the lengths of segments joining the origin point to each reference point, and also the angle between the two segments;c) deducing by calculation the coordinates of the contact point in the associated horizontal plane, and storing said coordinates; andreiterating steps a), b), c) for a plurality of points on the profile line to be determined, including at least the angle points situated at the intersections between said essentially vertical walls.The invention also provides apparatus for implementing the above method.

REFERENCES:
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patent: 4583292 (1986-04-01), Langberg
patent: 4918817 (1990-04-01), Eaton
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patent: 6785973 (2004-09-01), Janssen
patent: 2004/0066508 (2004-04-01), Schmadel
patent: 2006/0061752 (2006-03-01), Solomon et al.
patent: 39 11 754 (1990-10-01), None
patent: 43 17 932 (1994-12-01), None
French Search Report for FR 0508959, dated Mar. 24, 2006.

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