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Class Information
Number: 250/559.26
Name: Radiant energy > Photocells; circuits and apparatus > With circuit for evaluating a web, strand, strip, or sheet > Measuring dimensions > Longitudinal measurement (e.g., length or spacing)
Description: Subject matter wherein the circuit output is indicative of a linear dimension of the material or feature which lies parallel to the length of the material.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8680456 Methods and apparatus for determination of parameters related to the movement of a coiled tubing string Mar. 25, 2014
7932485 Method and apparatus for the dynamic generation and transmission of geometrical data Apr. 26, 2011
7742188 Image forming apparatus and method Jun. 22, 2010
7528967 Optical characteristic measuring apparatus and measuring method using light reflected from object to be measured May. 5, 2009
7511834 Optical apparatus for measuring tooling position within a seaming machine Mar. 31, 2009
7495208 Portable optical wound scanner Feb. 24, 2009
7379194 Method and system for determining mail piece dimensions using swept laser beam May. 27, 2008
6825936 High speed camera based sensors Nov. 30, 2004
6809650 Method and device for determining the state of a rail stretch Oct. 26, 2004
6801875 Methods, systems, and software for performing measurements Oct. 5, 2004
6657217 Probe for sensing movement in a compressor system Dec. 2, 2003
6657218 Method and apparatus for measuring gap, method and apparatus for measuring shape and method for manufacturing liquid crystal device Dec. 2, 2003
6630657 Method and system for electrically controlling the spacing between micromechanical electrodes Oct. 7, 2003
6570650 Apparatus and methods for reducing thin film color variation in optical inspection of semiconductor devices and other surfaces May. 27, 2003
6570174 OPTICAL PROXIMITY EFFECT CORRECTING METHOD IN SEMICONDUCTOR MANUFACTURING PROCESS, WHICH CAN SUFFICIENTLY CORRECT OPTICAL PROXIMITY EFFECT, EVEN UNDER VARIOUS SITUATIONS WITH REGARD TO SIZE AN May. 27, 2003
6486487 Apparatus and method for measuring and selectively adjusting a clearance Nov. 26, 2002
6462349 Measuring spacing between two surfaces via evanescent coupling Oct. 8, 2002
6444996 Apparatus and method for the detection of an edge of an object Sep. 3, 2002
6404506 Non-intrusive laser-based system for detecting objects moving across a planar surface Jun. 11, 2002
6222899 System for determining the deployed length of a flexible tension element Apr. 24, 2001
6215553 Width measurement of an image-bearing sheet Apr. 10, 2001
6201604 System for the measurement of the cut length of moving articles Mar. 13, 2001
6052192 System for the measurement of the cut length of moving articles Apr. 18, 2000
5894801 Methods and systems for sensing and rectifying pellet shaped articles for subsequent processing Apr. 20, 1999
5867274 System for the measurement of the cut length of moving articles Feb. 2, 1999
5777746 Apparatus and method for dimensional weighing utilizing a mirror and/or prism Jul. 7, 1998
5693933 Device for dtecting the size of an original document in a document reader Dec. 2, 1997
5627647 High speed laser/air slide dimensional measurement tool May. 6, 1997
5564846 Printer with sheet positioning marks control Oct. 15, 1996
5559341 System for detecting defects in articles using a scanning width which is less than width of portion of the article scanned Sep. 24, 1996
5502313 Exposure apparatus and method having a measuring unit for measuring distances between a mask surface and a projection optical system Mar. 26, 1996
5493401 Method of measuring film thicknesses Feb. 20, 1996
5483893 Control system and method for automatically identifying webs in a printing press Jan. 16, 1996
5448362 Non-contact measurement of displacement and changes in dimension of elongated objects such as filaments Sep. 5, 1995
5435543 Motion indicating device for moving objects Jul. 25, 1995
5420944 Techniques for aligning, focusing and normalizing imaging system May. 30, 1995
5416609 Image pickup apparatus for focusing an object image based on mirror reflected height of the object May. 16, 1995
5414268 Light scanner with interlaced camera fields and parallel light beams May. 9, 1995
5404022 Automatic roll or cut sheet sensing in plotters Apr. 4, 1995
5404021 Laser sensor for detecting the extended state of an object in continuous motion Apr. 4, 1995
5400476 Apparatus and method for controlling draft uniformity in textile sliver Mar. 28, 1995
5383021 Optical part inspection system Jan. 17, 1995
5376805 Method and apparatus for determining the size and position of a roll end head Dec. 27, 1994
5373363 Apparatus for measuring length of article transported on conveyor Dec. 13, 1994
5336898 Method and device for automatically determining the dimensions of printing cylinders having a diameter counter Aug. 9, 1994
5331148 Method and a device for the recording of number and size classification of objects, particularly live fish Jul. 19, 1994
5313069 Distance measuring system of an extendable strip having light reflecting and non-reflecting polygons May. 17, 1994
5260558 Measurements using balanced illumination optical microscopy Nov. 9, 1993
5225690 Gap measuring device and method using frustrated internal reflection Jul. 6, 1993
5214490 Sheet dimension measurement system May. 25, 1993

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