Electric heating – Metal heating – Wire – rod – or bar bonding
Reexamination Certificate
2007-07-24
2007-07-24
Tran, Len (Department: 1725)
Electric heating
Metal heating
Wire, rod, or bar bonding
C219S079000
Reexamination Certificate
active
10558785
ABSTRACT:
A welding machine, operating by the electric resistance welding method, for producing wire grid mat of longitudinal and transverse wires (L, Q) crossing one another and welded together at the crossing points, having a plurality of welding units (1, 1′), located transversely to the production direction, which at least for each longitudinal wire have one upper welding head (2) with an upper electrode, located above the grid production plane (X-X), and one lower welding head (5) along with a lower electrode movable counter to the upper electrode, the lower welding head being located below the grid production plane (X-X), having a common rail system (26, 28, 31) with at least two common rails extending along the welding line (S-S), for delivering the welding current to the welding electrodes, in which for continuously variable positioning of all the welding units transversely to the production direction (P1) along the welding line, adjusting devices (56, 57) and clamping devices (64, 65, 66; 64′, 65′, 66′) as well as drive mechanisms (60, 60′, 60″; 61, 62, 63) are provided.
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Cohen Pontani Lieberman & Pavane LLP
EVG Entwicklungs -u. Verwertungs-Gesellschaft m.b.H.
Tran Len
LandOfFree
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