Electrical apparatus with retaining means for a terminal screw
US4478478A · kind A · utility
13Cited by
1References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1983 |
| Grant date | Oct 23, 1984 |
| Priority date | — |
| Expiry date | Oct 24, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B41/002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A piece of electrical apparatus, such as a junction box, having a body of insulating material has at least one sleeve to receive and position the screw of a connecting terminal and, projecting into the sleeve, at least one resiliently deformable protuberance, to retain the screw and prevent it from dropping out, the protuberance being formed by means of a thinned down zone of the wall of the sleeve. Further retaining means may be provided comprising one or more ribs projecting into the sleeve and extending longitudinally of the sleeve for a part of the length of the sleeve at the inner end of the sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.