Appliance construction including a sealing device
US4998970A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 1989 |
| Grant date | Mar 12, 1991 |
| Priority date | — |
| Expiry date | Jun 5, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49879
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An appliance, such as a refrigerator or water heater construction, typically includes a first wall in surrounding spaced apart relationship to a second wall. An insulating and sealing device of insulation material, such as fiberglass or foamed material partially enclosed in an open-topped envelope of plastic or foil material is circumferentially located in the space between the first wall and outer wall at a preselected location within the space. The insulating and sealing device which is of a radial thickness greater than the radial width of the space is radially compressed between the first wall surface and second wall surface. An expanded foam thermal insulation material fills the space to one side of the insulating and sealing device. A method of making the appliance having two spaced apart walls includes the steps of positioning an insulating and sealing device of resilient, flexible insulation material on and in contact with one of the walls, the insulating and sealing device having a radial thickness greater than the radial width of the space, and positioning the two walls into transverse spaced apart relationship radially compressing the collar between the two walls. In ano…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.