| US 7,513,357 B2 | ||
| Work module for connection to a main conveyor line in a system of conveyor lines and a conveyor unit comprising an endless chain | ||
| Göran Abbestam, Partille (Sweden); and Tommy Karlsson, Singapore (Singapore) | ||
| Assigned to FlexLink Components AB, (Sweden) | ||
| Appl. No. 10/485,375 PCT Filed Aug. 05, 2002, PCT No. PCT/SE02/01427 § 371(c)(1), (2), (4) Date Jul. 26, 2004, PCT Pub. No. WO03/026989, PCT Pub. Date Apr. 03, 2003. |
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| Claims priority of application No. 0102674 (SE), filed on Aug. 03, 2001; and application No. 0102730 (SE), filed on Aug. 13, 2001. | ||
| Prior Publication US 2004/0238323 A1, Dec. 02, 2004 | ||
| Int. Cl. B65G 37/00 (2006.01); B65G 17/00 (2006.01) | ||
| U.S. Cl. 198—457.03 [198/570; 198/602; 198/841] | 2 Claims |
| 1. A work module for connection to a main conveyor line in a system of conveyor lines, said work module comprising:
a first transverse conveyor line;
a longitudinal conveyor line;
a second transverse conveyor line;
each of said conveyor lines comprising an outer conveyor line and an inner conveyor line;
an upper surface, said upper surface having an area which is limited by said outer conveyor lines of said first transverse,
second transverse and the longitudinal conveyor lines;
a dissipatively conducting material comprising a plastic mat essentially covering said upper surface within said area except
at positions within said area where said first transverse, second transverse and longitudinal conveyor lines run; and
an underlying electrically conductive structure supporting each of said conveyor lines,
said first transverse conveyor line being arranged to transport goods delivered from said main conveyor line to the longitudinal
conveyor line,
said second transverse conveyor line being arranged to transport goods delivered from said longitudinal conveyor line to said
main conveyor line,
in each of said first transverse, longitudinal and second transverse conveyor lines are equipped with a dissipatively conducting
protection layer between said each conveyor line and said underlying electrically conductive structure, and
said dissipatively conducting protection layer has a surface resistivity in the range between 104 Ω/sq and 1010 Ω/sq.
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