Method and apparatus for manufacturing a foam insulated water heater
US4477399A · kind A · utility
60Cited by
17References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 16, 1982 |
| Grant date | Oct 16, 1984 |
| Priority date | — |
| Expiry date | Jun 16, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/112
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for insulating a water heater with foamed insulation comprises inflating a tube in the cavity between the shell and the tank to define a boundary for the cavity into which the insulating material is injected. The device is deflated after the foamed insulation has set in the cavity. Apparatus for carrying out such method is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.