Lighting device for inspecting objects for flaws
Patent 4697076 Issued on September 29, 1987. Estimated Expiration Date: 
May 20, 2005. 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 20, 2005. 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 ReferencesFlaw detecting apparatus Method and apparatus for inspecting glass containers Patent #: 4424441 InventorApplicationNo. 06/735952 filed on 05/20/1985US Classes:250/223B, Bottles209/526, Detecting internal flaw (e.g., air bubble, crack, etc.) in wall of item356/239.4Containers (e.g., bottles)ExaminersPrimary: Westin, Edward P.Assistant: Wieland, Charles Attorney, Agent or FirmInternational ClassesG01N 21/88 (20060101)G01N 21/90 (20060101) Foreign Application Priority Data1984-05-24 JPAbstractA lighting device for apparatus detecting flaws in objects having a photoelectric sensor aligned with the object and a processor responsive to the sensor for determining the light received by the sensor. The lighting device includes a ring-shaped lamp and an opaque shield having predetermined light paths controlling the direction of the light from the lamp in a selected direction, so that the light irradiates the object to be inspected in a manner whereby the light is reflected from the object to the sensor only when the object is flawed. | |
