The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 1981
Filed:
Aug. 27, 1979
Hans-Christian Grassmann, Igelsdorf, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
In order to suppress the high-frequency currents in bearings of shafts, the bearing capacity is arranged in the configuration of an electric quadrupole in such a manner that the high frequency voltage becomes a minimum. In the case of ungrounded shafts, a further impedance is provided between the bearing housing and the housing of the treatment chamber such that the sum of this further impedance and the impedance of the shaft are great compared to the bearing impedance. Additionally, a low resistance in the form of a sliding contact is shunted across the bearing impedance. The further impedance according to one embodiment is a capacitance and in another embodiment is a parallel L-C resonant circuit which is connected in series with the bearing. The capacitance of the L-C circuit is formed by an insulating plate and the inductance by a winding.