Optics: measuring and testing – Angle measuring or angular axial alignment – Alignment of axes nominally coaxial
Reexamination Certificate
2007-12-25
2007-12-25
Stafira, Michael P. (Department: 2886)
Optics: measuring and testing
Angle measuring or angular axial alignment
Alignment of axes nominally coaxial
C356S399000
Reexamination Certificate
active
11110724
ABSTRACT:
Device for determining the straightness of hollow cylindrical surfaces and partial surfaces thereof, and the three-dimensional orientation of several hollow cylindrical surfaces or partial surfaces with reference to at least one of axial parallel offset and angular offset relative to one another. A transmitting/receiving device and a reflector/receiving device are provided which are swingable essentially without play over a respective hollow cylindrical surface or partial hollow cylindrical surface. The transmitting/receiving device has at least one transmitter for emitting light beams and at least one receiver for receiving and for measuring an incidence position of the light beams. The reflector/receiving device has at least one partially-reflective optical element for partial reflection of light beams and at least one receiver for receiving and for measuring an incidence position of a portion of the light beams. The relationship between circular lines produced on the detectors in different phases of measurement is used.
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Prueftechnik Dieter Busch AG
Safran David S.
Stafira Michael P.
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