Flaw detector
Patent 4488648 Issued on December 18, 1984. Estimated Expiration Date: 
May 6, 2002. 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.
May 6, 2002. 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 References 3770969 3777169 3880750 3886356 3887284 3900265 Labeled container orientation sensing system Method and apparatus for video inspection of articles of manufacture Apparatus for testing tops of containers for damage Method and apparatus for detecting foreign particles in full beverage containers InventorApplicationNo. 06/375644 filed on 05/06/1982US Classes:209/526, Detecting internal flaw (e.g., air bubble, crack, etc.) in wall of item250/223B, Bottles348/127, Of transparent container or content (e.g., bottle, jar, etc.)356/239.4, Containers (e.g., bottles)356/428, Of containers702/40Radiant energy (e.g., X-ray, infrared, laser)ExaminersPrimary: Scherbel, David A.Assistant: Wacyra, Edward M. Attorney, Agent or FirmInternational ClassesG01N 21/88 (20060101)G01N 21/90 (20060101) G06T 7/00 (20060101) AbstractContainer flaws are detected by repetitively sampling the output of a photosensor at a controlled rate dependent on the speed of inspection. Samples are digitized and stored in memory on a first in, first out basis. First in (oldest) and last in (newest) samples are used to provide a sliding computation of the slope or rate of change of the photosensor output. The computed slope is compared to an empirically determined preselected number. Containers are rejected or accepted based on the results of the comparison.Field of SearchSorting bottles, ampoules, jars, drinking vessels, or like ceramic or glass containersCondition responsive means controls separating means Sensing radiant energy reflected, absorbed, emitted, or obstructed by item or adjunct (e.g., label, cap, etc.) thereof Detecting internal flaw (e.g., air bubble, crack, etc.) in wall of item Signalling, indicating, or display means Operation of apparatus stopped Signal lamp or audible alarm | |
