Method of and apparatus for inspecting end of object for defect
January 15, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesDual wavelength spectrophotometer for ampoule leak detection and content inspection Shape testing apparatus Foreign matter detecting device Defect detecting method and apparatus Defect detecting method and system Apparatus for inspecting bottles Process and apparatus for the automatic inspection by transparency contrast in particular of containers Patent #: 4736851 InventorAssigneeApplicationNo. 820975 filed on 01/15/1992US Classes:356/606, Line of light projected209/526, Detecting internal flaw (e.g., air bubble, crack, etc.) in wall of item250/223B, Bottles348/125, Flaw detector356/239.4, Containers (e.g., bottles)356/394With comparison to master, desired shape, or reference voltageExaminersPrimary: Rosenberger, Richard A.Assistant: Pham, Hoa Q. Attorney, Agent or FirmForeign Patent References
International ClassesG01B 011/14G01N 021/00 Foreign Application Priority Data1991-01-29 JPAbstractA method of and an apparatus for inspecting an end of an object for a defect by which not only a defect caused by deformation of an end of an object in a horizontal direction but also another defect caused by deformation in a vertical direction can be detected with a high degree of accuracy. Light from an end portion of an object is received by a pair of one- or two-dimensional image sensors and disposed at a predetermined angle relative to each other, and brightness outputs of individual picture elements of the image sensors are stored into memories. From the stored signals, a bright line produced by light from an edge of the object end portion is detected for each image sensor, and a position of the bright line is calculated as a digital amount from a number of picture elements for each image sensor. Then, the digital amounts are added and substracted between the image sensors. A defect is judged from results of the addition and subtraction.Field of SearchWith comparison to master, desired shape, or reference voltageBY INSPECTION WITH AGITATION OR ROTATION Of container contents Of containers Bottles Detecting internal flaw (e.g., air bubble, crack, etc.) in wall of item Sorting bottles, ampoules, jars, drinking vessels, or like ceramic or glass containers Sensing radiant energy reflected, absorbed, emitted, or obstructed by item or adjunct (e.g., label, cap, etc.) thereof Detecting flaw in, or absence or misplacement of, label on item | |
