Process and system for eliminating oxygen in the internal...

Textiles: fluid treating apparatus – Machines – Combined

Reexamination Certificate

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C134S105000

Reexamination Certificate

active

06564593

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a new device of the machine system commonly named “DRY CLEANING MACHINE” used to clean clothes, fabrics or metal objects by means of a solvent other than water and therefore subject to the risk of explosion or fire due to the flammability of the solvent.
2. Description of Related Art
The present invention is an improvement of the invention already described in a previous Italian patent application no. BO 99 A 000333 by the same applicant.
BRIEF SUMMARY OF THE INVENTION
The present invention described herewith, designed for a traditional dry cleaning machine, entails the elimination of the oxygen in the atmosphere within the machine at the beginning of each cleaning cycle by means of the controlled combustion on a catalytic bed. The combustible used is the same solvent used to clean, kept as vapour in a flow of air. The main improvement currently added consists of the crucial addition of one or a number of sensors, namely probes that are sensitive to the concentration of oxygen, the signals of which are utilized to control the oxygen elimination process until stopping it when the desired concentration is reached.
This and other characteristics will further relate to a simple form of the invention given as indicated, which is not binding, on the scope of this patent.


REFERENCES:
patent: 2446076 (1948-07-01), Campbell et al.
patent: 2735822 (1956-02-01), Campbell et al.
patent: 3491707 (1970-01-01), Bakker
patent: 3598063 (1971-08-01), Kalkhof
patent: 4898601 (1990-02-01), Casey

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