BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an exploded, perspective view of a portion of a foil according to the invention;
FIG. 1A is a perspective view of the foil according to FIG. 1;
FIG. 2 is a perspective view of a second embodiment of the foil according to the invention;
FIGS. 3, 3A, 3B are end views of three embodiments of foils according to the invention; and
FIGS. 4, 4A, 4B, 4C are perspective views of four clips according to the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to the figures of the drawing in detail and first, particularly, to FIGS. 1 and 1A thereof, the foil according to the invention comprises a carrier strip 1, plates 2 of a ceramic material fixed to the latter, and clips 3. The clips 3 affix the plates 2 to the carrier strip 1.
The carrier strip 1, which is produced from metal, in particular from stainless steel, or from a plastic material, in particular from glass fiber reinforced plastic, is formed with a groove 11 extending in its longitudinal direction on its side facing the plates 2. On their side facing away from the upper side, along which the wire of a paper production system is moved, the plates 2 of a ceramic material are formed with a strip 21 that projects and extends in the longitudinal direction of the carrier strip 1 and which, along its lateral edges, is formed with undercuts 22. The side of the plates facing the carrier strip 1 will be referred to as the support surface. The clips 3, which are preferably produced from stainless steel sheet, are approximately U shaped, having a central web 31 and two lateral limbs 32 oriented toward each other. The clips 3 can be deformed elastically. The dimensions of the strips 21 and of the clips 3 are chosen such that they can be inserted into the groove 11 located in the carrier strip 1.
A variety of exemplary embodiments of the clips 3 are explained below with reference to FIGS. 4, 4A, 4B, and 4C.
In order to produce a foil, the clips 3 are placed on the plates 2 of a ceramic material in such a way that the free ends of the limbs 32 project into the undercuts 22 of the strips 21. Furthermore, the clips 3 are arranged with respect to the plates 2 in such a way that they extend over the butt joints of two mutually adjacent plates 2. Then, the plates 2 formed with the clips 3 are inserted with their strips 21 into the groove 11 of the carrier strip 1, and are cast in the latter by means of a plastic material.
Since the plates 2 of a ceramic material are formed only with strips 21 projecting from these, onto which the resilient clips 3 are placed, only compressive forces are exerted on the plates 2. Since, moreover, the clips 3 are placed onto the strips 21 of two plates 2 lying beside each other in such a way that they extend over the butt joints, height adjustments between plates 2 located beside one another are avoided and no projecting edges can form at the butt joints.
The embodiment according to FIG. 2 differs from the embodiment according to FIG. 1A in that the carrier strip 10, which is composed of a plastic material, in particular of a glass fiber reinforced plastic, is produced and connected to the plates 2 of a ceramic material and to the clips 3 in that they are fitted to the plates 2 having the strips 21 and the clips 3 latched to the latter in a casting operation.
A number of embodiments of a foil according to the invention are illustrated in FIGS. 3, 3A, 3B and 3C:
The embodiment of FIG. 3 is that which has been explained by using FIG. 1.
The embodiment according to FIG. 3A differs from the embodiment according to FIG. 3 in that the carrier strip 1a, which is substantially wider, is formed with two grooves 11, and in that the plates 2a of a ceramic material, which are wider, are formed with two strips 21, onto which the clips 3 are placed, the strips 21 and the clips 3 being cast in the grooves 11 by means of a plastic material.
The embodiment according to FIG. 3B differs from the embodiment according to FIG. 3 in that the carrier strip 1a is formed with a substantially wider groove 11a, and in that the plates 2a of a ceramic material are formed with substantially wider strips 21a, to which correspondingly wider clips 3a are assigned. The carrier strips 1 and 1a are formed with profiling extending longitudinally, such as a groove, by means of which they can be detachably fixed to a stationary carrier belonging to the system.
FIG. 4 illustrates a first embodiment of a clip 3 which is formed with a central web 31 and two lateral limbs 32, the free ends of the two limbs 32 being oriented toward each other. In addition, the central web 31 is formed with an outwardly angled portion 33 oriented away from the limbs 32. In addition, at least one of the two limbs 32 is formed with a slot 34 in its central region. As a result of forming the clips 3 with at least one outwardly angled portion 33 and with slots 34, their elasticity is increased.
The clip 3 according to FIG. 4A is formed without a slot.
The clip 3a according to FIG. 4B is approximately twice as wide as the clip 3 according to FIG. 4, its central web 31 being formed with two outwardly angled portions 33 which are oval in cross section.
The clip 3a according to FIG. 4C differs from the clip 3 according to FIG. 4B in that the outwardly angled portions 33a are approximately circular in cross section.
Patent Application
20080017343
