| 摘要 |
A BRAKE SHOE (421, 422) FOR AN ELEVATOR EMERGENCY STOP COMPRISES (A) A BRAKE BODY (43) HAVING A BRAKING FACE AND (B) PLURALITY OF BRAKING PIECES (44) EMBODIED IN THE BRAKING FACE SIDEOF THE BRAKE BODY (43) TO BE PROJECTED FROM A BRAKING PIECES.THE PROJECTION OF EACH OF THE BRAKING PIECES (44) FORMS A COLUMN OR A MULTI- CORNERED POLE HAVING ROUNDED CORNERS. THE BRAKING PIECES (44) ARE MADE OF A COMPOSITE MATERIAL CONTAINING A CERAMIC BASE MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILICON NITRIDE, SILICON CARBIDE AND SIALON, AND PARTICLES OF AT LEAST ONE CERAMIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF A CARBIDE, A NITRIDE AND A BORIDE. THE CERAMIC PARTICLES HAVE A PARTICLE SIZE IN THE RANGE OF 10 TO 150 µM, AND DISPERSED INTO THE CERAMIC BASE MATERIAL. (FIG.8) |
