Compact solid state station protector device
US4903295A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1987 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | Aug 7, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/026
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a compact solid state protector unit which comprises an inner insert structure, and an outer cover member having an open base end and adapted to be removably disposed over the insert structure, and a base member adapted to releasably seal the open base end of the cover member. The inner insert structure is constructed and arranged to support the components of a protector circuit mounted thereon in insulated spaced relationship. The disclosed protector circuit comprises two bidirectional solid state voltage sensitive switch devices with an associated ground terminal, two variable resistance devices, and line protector means for protecting the solid state protector unit from high voltage transients and abnormal currents. In the preferred embodiment disclosed, the cover member is provided with telephone line side test access holes and the contact pins of the protector unit are constructed and arranged to permit the protector unit to be disconnected from the central office equipment while maintaining contact with the telephone line side to permit testing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.