Insulated door assembly
US9435579B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2015 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Apr 10, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2201/126
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A door for a refrigerator appliance is pivotally connected by a hinge. The door includes a polygonal shell having corners and defining at least part of a cavity therein and a hinge bearing mounted to the polygonal shell adjacent one of the corners. The hinge bearing extends into the cavity and defines a generally cylindrical passage to receive and journal a hinge pin of the refrigerator appliance. A reinforcement tube is secured to the hinge bearing and extends a distance within the cavity. The reinforcement tube includes a sidewall that defines a hollow interior, and at least one hole extends through the sidewall to provide communication between the cavity and the hollow interior. Insulation is foamed in place that substantially fills the cavity including the corner, and the insulation penetrates into the hollow interior of the reinforcement tube via the at least one hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.