Grounding arrangement useful in a display apparatus
CA 1293799 C · Owner: Rca Licensing Corporation · Inventors: Testin, William John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The control unit for a display system is partitioned into first and second interconnected control units so as to permit respective separate ground terminals to be utilized. The separate ground terminals allow stable grounding for sensitive circuits in each of the control units without the formation of a continuous closed ground, loop which would be susceptible to disturbances due to ground currents induced from the magnetic field of the deflection unit of the display system. A theshold responsive gate is coupled between the separate ground terminals to inhibit excessively large and potentially damaging voltages due to picture tube discharges from being developed between the ground terminals.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted December 31, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 31, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.