Textiles: fiber preparation – Working – Picking
Patent
1992-04-01
1994-06-28
Rosenbaum, Mark
Textiles: fiber preparation
Working
Picking
19 65A, 19 975, 241 30, 241 375, 241605, D01G 3100
Patent
active
053235134
ABSTRACT:
A bale opening machine is provided with a safety apparatus, by means of which there are produced safety barriers or fences parallel to lengthwise sides of a row of bales to be opened and/or substantially perpendicular to the direction of movement of the bale opening machine. The safety apparatus moves in conjunction with the bale opening machine. The safety apparatus can comprise mechanical and/or sensory protective structure. The sensory protective structure comprises one or more electro-acoustical transducers arranged in a sonic chute together with one or more reference reflectors such that transmitted acoustical signals are split into a measuring signal and a reference signal. The reference signal is reflected at one of the reference reflectors, whereas the measuring signal is reflected at a deflection reflector into the monitored area and back again by an object located in the monitored area.
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Description of ultrasonic transducer from Siemens AG., product literature, 1989, Order No. GWA 4 NEB 839 0476-10a.
Aebli Jost
Anderegg Peter
Binder Rolf
Demuth Robert
Faas Jurg
Chin Frances
Maschinenfabrik Rieter AG
Rosenbaum Mark
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