System and process for detecting properties of travelling sheets in the cross direction
Patent 4903528 Issued on February 27, 1990. Estimated Expiration Date: 
September 26, 2008. 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.
September 26, 2008. 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 ReferencesInventorsAssigneeApplicationNo. 249617 filed on 09/26/1988US Classes:73/159, SHEET, WOVEN FABRIC OR FIBER73/73, MOISTURE CONTENT OR ABSORPTION CHARACTERISTIC OF MATERIAL250/559.48, With transversal scan356/431, Including transverse scanning700/129, Profile analyzer or controller702/173WeightExaminersPrimary: Cuchlinski, William A. Jr.Assistant: Gutierrez, Diego Attorney, Agent or FirmInternational ClassesG01N 033/34G01N 033/44 AbstractTo determine measurements such as basis weight and caliper of a travelling sheet during production, the sheet is repeatedly traversed with a scanning sensor and, during each traverse, measurements are taken at a plurality of slice locations. Then, a series of reference locations are selected which are spaced apart in the machine direction along the sheet surface. Then, for selected slices, measurement values are estimated based upon actual measurements taken at locations on the selected slices which are not spaced in the machine direction at the same spacing as reference locations. | |
