Patent · US Expired

Method of disposing of cooling units

US5074477A · kind A · utility

9Cited by

4References

8Claims

0Family size

Assignee

SEG Sonder-Entsorgungs-Gesellschaft mbH · DE

Inventors

Hubert Welter · Mettlach, DE
Hans-Peter Walter · Mettlach, DE
Alfred Walter · Essen, DE
Cornelius Welter · Mettlach, DE
Herman-Josef Walter · Saarburg, DE

Key dates

Filing date	Dec 12, 1990
Grant date	Dec 24, 1991
Priority date	—
Expiry date	Dec 12, 2010

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S241/38
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Useless refrigerators or other commodities which contain or consist of polyurethane foam wherein the cells confine fluorochlorohydrocarbon gas are relieved of refrigerant and lubricant prior to being comminuted into 1 cm.sup.3 cubes or similar particles. The particles are classified in a suction chamber to segregate comminuted foam from metallic and/or plastic materials, and the particles of foam are thereupon ground and/or otherwise pulverized to a size in the range of 0.1 mm. This destroys the cells and releases the gas which is filtered, condensed and mixed with water prior to confinement in vessels.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.