Refrigerated display case having an accordion-type combined air duct and service door
US4402192A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 31, 1981 |
| Grant date | Sep 6, 1983 |
| Priority date | — |
| Expiry date | Dec 31, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47F2003/066
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A refrigerated display case, of the type in which air flows through a duct and is circulated about a product display space, has a service opening at the rear of the case. Disclosed is an accordion-pleated, hollow wall structure which is both an air duct and a door. The structure in its closed position communicates at top and bottom with adjacent portions of the conduit through which air is circulated during refrigeration or, in some instances, during defrost cycles of the case. In its open position, the hollow structure defines a service opening at the rear of the case through which dairy product support carts can be rolled into or out of the case. The hollow structure is sectionally formed in a manner to define the service opening at any selected cart location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.