Air- and dust-proof cover for flush mounting wiring fixture
US4685581A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1987 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Jan 9, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02G3/123
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An air- and dust-proof cover for a flush mounting wiring fixture comprises a housing part having cylindrical parts respectively extended inward and outward from the housing part and having therein a flexible thin-wall portion for penetrating therethrough connecting wires to be connected to terminals of the wiring fixture to be housed in the housing part, the wires being thus passed through the flexible thin-wall portion broken by the wires as guided by the cylindrical parts, with any possibility of cracking of the housing part at such wire passing portion or of deterioration of the airtightness due to contraction of the housing part accompanying ambient temperature change effectively eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.