R.F. choke for CATV system
US5032808A · kind A · utility
16Cited by
7References
19Claims
0Family size
Inventor
Key dates
| Filing date | Jul 21, 1989 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | Jul 21, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/0115
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A radio frequency choke for a cable or CATV system is designed for blocking signals from 5 to 1000 MHz and passing 60 Hz AC power. The RF choke has a wire coil that is wound upon a coil form of a predetermined cross section, the coil being formed of a number of successive spaced windings on the form, with each winding being joined to the next by an air coil of at least one turn, formed off the loop. The various successive windings should have different numbers of turns. Forming the air coils tends to tighten the windings onto the form, so that a fixative coating or adhesive can be eliminated or omitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.