Optics: measuring and testing – Dimension – Width or diameter
Reexamination Certificate
2005-10-18
2005-10-18
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
Dimension
Width or diameter
C356S625000, C356S629000, C356S640000
Reexamination Certificate
active
06956661
ABSTRACT:
Device measures external and internal dimensions of measurement objects using a light source for illuminating a slit diaphragm, in front of or behind which a spirally slotted disc is arranged, slit diaphragm and disc being rotatable in relation to each other and the disc having a spiral slot intersecting the slit of the slit diaphragm, the interaction of which with the slit creates a hole aperture. Evaluation device measures the time in which the light beams scan the measurement object and determines dimensions from the measured times. To scan the measurement object simultaneously in different spacial planes or in one plane in different axes, several slits are provided in the slit diaphragm. Slits may be disposed radially around axis of rotation. Light source(s) may emit light of one or more wavelengths or different frequency modulated light amplitudes.
REFERENCES:
patent: 4357085 (1982-11-01), Niwa et al.
patent: 4548504 (1985-10-01), Morander
patent: 4775204 (1988-10-01), Setani
patent: 4938589 (1990-07-01), Breithaupt
patent: 4963023 (1990-10-01), Goldovsky et al.
patent: 240 777 (1986-11-01), None
patent: 38 16 322 (1989-11-01), None
patent: 3816322 (1989-11-01), None
patent: 2 278 434 (1994-11-01), None
International Search Report dated Sep. 12, 2003 in International Application No. PCT/EP03/05810 filed Jun. 4, 2003 (5 pages).
Nguyen Sang H.
Shlesinger & Arkwright & Garvey LLP
Toatley , Jr. Gregory J.
LandOfFree
Device for measuring external and internal dimensions and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for measuring external and internal dimensions and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for measuring external and internal dimensions and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3466484