Optics: measuring and testing – By monitoring of webs or thread
Reexamination Certificate
2005-04-19
2005-04-19
Stafira, Michael P. (Department: 2877)
Optics: measuring and testing
By monitoring of webs or thread
Reexamination Certificate
active
06882423
ABSTRACT:
A system for precision testing of fiber length and the like using electrostatic collection and control of fibers. The system comprises two spaced-apart and longitudinal extending electrode plates wherein one electrode plate has a positive charge and the other electrode plate is grounded or has a negative charge. An endless rotating belt extends between and parallel to the electrode plates, and the rotating belt is positioned next adjacent and in contact with or in close proximity to one of the two spaced-apart electrode plates such that the distance between the belt and the other electrode plate is greater than the length of fibers to be tested. A fiber introduction system is provided to introduce a plurality of individual fibers above the two electrode plates such that the fibers will adhere to the belt and the other ends of the fibers are attracted to the other electrode plate and thereby straightened. An imaging system is provided above the belt to generate image data corresponding to the length of individual fibers being transported by the rotating belt, and a data processor serves to analyze the image data to determine the length of fibers passing beneath the imaging system.
REFERENCES:
patent: 2711626 (1955-06-01), Oglesby et al.
patent: 3591294 (1971-07-01), Neil
patent: 4040243 (1977-08-01), Weller, Jr.
patent: 4468922 (1984-09-01), McCrady et al.
patent: 4512060 (1985-04-01), Shofner
patent: 4827574 (1989-05-01), Nakano et al.
patent: 5054317 (1991-10-01), Laubscher
patent: 5167150 (1992-12-01), Shofner et al.
patent: 5327617 (1994-07-01), Yao
patent: 5491876 (1996-02-01), Shofner et al.
patent: 6717675 (2004-04-01), Munch
Ikiz, et al., “Fiber Length Measurement by Image Processing,”.
Brenzovich Joseph A.
Byrd Thesley A.
Rust Jon P.
Stroupe Stephen P.
Jenkins & Wilson & Taylor, P.A.
North Carolina State University
Stafira Michael P.
LandOfFree
Apparatus and method for precision testing of fiber length... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for precision testing of fiber length..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for precision testing of fiber length... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3372102