Cartridge heater with moisture resistant seal and method of manufacturing same
US6740857B1 · kind B1 · utility
11Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2002 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Dec 6, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/46
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cartridge heater and method of manufacturing same. In one embodiment, the cartridge includes a sheath having a first end and a second end. The first end of the sheath forms a seat. An elastomeric bushing is swaged against the seat such that it forms a mechanically bonded seal substantially preventing moisture egress into the cartridge heater. A heating element is also disposed in the sheath and is connected to leads protruding from the bushing. The heater includes crushable insulation material disposed within the sheath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.