Brakes – Wheel – Axially movable brake element or housing therefor
Reexamination Certificate
1999-11-30
2001-07-31
Butler, Douglas C. (Department: 3613)
Brakes
Wheel
Axially movable brake element or housing therefor
C188S25100R, C188S25000B, C188S25000B, C188S25000B, C188S234000
Reexamination Certificate
active
06267206
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a brake lining for disk brakes in particular, for road and rail vehicles, which comprises a carrier plate and a block fixed thereon made of pressed friction material, the friction material block being fixed positively and/or nonpositively on the carrier plate.
2. Description of the Related Art
The most various types of brake linings for disk brakes are known. However, it is common to all these brake linings that a block made of a friction material is placed on a metallic carrier plate. Since the carrier sheets are made of metallic materials, they show a high weight and have furthermore a high heat transition.
SUMMARY OF THE INVENTION
The aim of this invention is to create a brake lining of the above mentioned type, the carrier plate of which has a low weight and a low heat transition for a high mechanical strength, the material of the carrier plate being simultaneously integrated into the material of the friction material block during the manufacturing of the brake lining.
This aim is achieved for a brake lining wherein the carrier plate is made of a hard amorphous plastic rigid up to the decomposition temperature and is composed of spatially close meshed interlaced macromolecules with a high mechanical strength like, for example, a duroplastic, the material of the carrier plate gripping into the carrier plate free surface of the friction material block and overlapping the side walls of the friction material block placed on the carrier plate and being welded with the material of the friction material block.
Accordingly, the invention consists of a carrier plate for such a brake lining made of a hard amorphous plastic rigid up to the decomposition temperature which is composed of spatially close meshed interlaced macromolecules with a high mechanical strength. Preferably the carrier plate is made of a duroplastic. The material of the carrier plate penetrates into the material of the friction material block during the carrier plate manufacturing in the edge areas and bearing areas of the plastic material of the friction material block and furthermore overlaps the side walls of the friction material block placed on the carrier plate so that the material of the carrier plate is more or less welded with the material of the friction material block and thus the friction material block is integrated into the carrier plate material.
Surprisingly it turned out that duroplastics are particularly advantageously suitable as carrier plate material because of their high strength. In addition, there is the low weight and the low heat carrying capacity. Hereby, it is particularly advantageous that the material of the carrying plate during its manufacturing, for example during the injection moulding process, penetrates into the material of the friction material block especially into its side wall areas and is more or less welded here so that the friction material block is simultaneously held locked positively and nonpositively on the carrier plate and is connected with this plate, all the more the material of the carrier plate also engages in the bearing area of the friction material block into its material.
Embodiments of the invention are indicated in the subclaims.
REFERENCES:
patent: 4173681 (1979-11-01), Durrieu et al.
patent: 4552252 (1985-11-01), Stahl
patent: 4781275 (1988-11-01), Olsen
patent: 6062351 (2000-05-01), Strasser et al.
patent: 1575930 (1970-05-01), None
patent: 29821482 (2000-05-01), None
patent: 0027714 (1981-04-01), None
patent: 2441100 (1980-06-01), None
patent: 2498713 (1982-07-01), None
patent: 2508129 (1982-12-01), None
patent: 2259553 (1993-03-01), None
Fischer Karsten
Grimme Hansjörg
AlliedSignal Bremsbelag GmbH
Butler Douglas C.
Kueffner Friedrich
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