Patent ID: 9730305
Date: 2017-08-08
CPC Classifications: H01T,H05F

Claim:
1. An antistatic device for reducing electrostatic charges on moving material webs, comprising: a housing having a longitudinal extension and including a plurality of wall sections together defining an interior; at least one active electrode assembly including a plurality of active individual needle-shaped electrodes, the at least one electrode assembly during operation is electrically connected to an associated voltage source; a controller for controlling the voltage source; wherein the at least one active electrode assembly and the controller are arranged in the interior of the housing; a signal device including an optical indicator arranged at least one of in and on the housing, the optical indicator configured to output an optical signal to a user, which signal correlates with at least one parameter of the material web, wherein the at least one parameter includes a polarity of the material web; wherein the optical indicator extends along the longitudinal extension of the housing and circumferentially to the longitudinal extension along at least two of the plurality of wall sections to facilitate observation of the optical signal; wherein the at least one active electrode assembly includes at least two active electrode assemblies, the at least two active electrode assemblies including an active positive electrode assembly with a plurality of positive electrodes and an active negative electrode assembly with a plurality of negative electrodes; and wherein the housing further includes a central web disposed in the interior and extending along the longitudinal extension between the positive electrode assembly and the negative electrode assembly, the central web composed of an electrically insulating material to electrically isolate the positive electrode assembly from the negative electrode assembly.