Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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B65H
HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
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63/00
Warning or safety devices, e.g. automatic fault detectors, stop-motions; ; Quality control of the package
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B65H63/02
responsive to reduction in material tension, failure of supply, or breakage, of material
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B65H63/024
responsive to breakage of materials
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B65H63/028
characterised by the detecting or sensing element
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B65H63/032
electrical or pneumatic
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B65H63/0321
using electronic actuators
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B65H63/0324
using photo-electric sensing means, i.e. the defect signal is a variation of light energy
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