Textiles: ironing or smoothing – Smoothing implements – Flatirons
Patent
1999-05-03
2000-10-03
Izaguirre, Ismael
Textiles: ironing or smoothing
Smoothing implements
Flatirons
D06F 7538
Patent
active
061255629
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention concerns a process for producing a sealed connection between the heating body of a sole plate of a steam iron and a plate often called a cap constituting the pressing surface of the iron.
The invention is equally directed to the sole plate of a pressing iron produced by the above-cited process.
PRIOR ART
The heating body of the sole plate is generally made of aluminum by molding, the tubular heating resistance being embedded in the sole plate body.
The plate or cap of the sole plate is generally made of an aluminum sheet whose pressing surface is advantageously coated with a layer facilitating sliding of the iron, such as a layer of enamel.
This plate or cap has steam passage holes which communicate with the steam chamber of the iron produced above the heating body.
This cap must be fixed in a sealed manner to the heating body.
This fixation can be achieved by means of a layer of resin resistant to the heating temperature of the sole plate and applied between the parts in contact of the heating body and of the cap, for example by screen printing.
This process, which is satisfactory when the area of the contact surface between the heating body and the cap is substantial, and corresponds to the major part of the surface of the heating body, is insufficient when this area is substantially reduced.
SUMMARY OF THE INVENTION
The object of the present invention is to overcome the above drawback, by proposing a process permitting the production of a sealed connection between the heating body and the plate which is simple and economical to implement and which guarantees a particularly reliable sealed connection, in particular when the area of the contact surfaces between the heating body and the cap is small.
The invention is thus directed to a process for producing a sealed connection between the heating body of a sole plate of a steam iron and a plate constituting the pressing surface of said iron, the plate having steam outlet holes.
According to the invention, this process is characterized in that the side of the heating body intended to be covered by said plate comprises a groove extending at least along the entire periphery of said heating body, in that said heating body is held flat, the side having the groove being directed toward the top, resin is caused to flow into said groove, said plate is applied onto said side of the heating body, the assembly is turned over in a manner such that the plate is directed toward the bottom, in order to cause the resin to flow into the part of the groove adjacent to the plate.
The resin utilized can be a silicone resin which is resistant to the heating temperature (around 250.degree. C.) of the iron sole plate.
When one turns over the assembly constituted by the heating body and the plate, the resin which has flowed into the groove comes to be applied onto the surface of the plate which covers the groove by constituting a ribbon having a predetermined thickness.
Advantageously, the turned over assembly is heated in a manner to accelerate or obtain hardening of the resin.
After hardening of the resin, a sealed and reliable connection is obtained between the heating body and the plate.
The invention is equally directed to the iron sole plate produced according to the process according to the invention.
According to the invention, each of the branches of said groove adjacent to respective longitudinal edges of the heating body are traversed by a series of conduits whose extremity adjacent to the bottom of said branch communicates by a channel with a steam chamber and of which the other extremity opens into a hole arranged in the plate applied onto the heating body.
By this fact, the resin which has flowed into said groove surrounds the extremity adjacent to the plate of each conduit and is in contact with the surface of the plate which covers the groove.
According to a preferred embodiment of the invention, the vapor passage holes arranged in the plate are prolonged toward the heating body by tubular parts formed in said plate, th
REFERENCES:
patent: 5146700 (1992-09-01), Prosser
patent: 5273606 (1993-12-01), Greve et al.
patent: 5907916 (1999-06-01), Hahnewald et al.
patent: 5935375 (1999-08-01), Nakazawa et al.
patent: 5937552 (1999-08-01), Hall
Brandolini Jean-Louis
Dodier Philippe
Izaguirre Ismael
Seb S.A.
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