Classroom on demand

Welcome to Classroom on demand, your source for educational materials related to the vertical transportation industry. This site represents the knowledge and expertise of the best engineers and mechanics in the elevator industry, and will help those new to the elevator industry learn about the basic workings of elevator systems, and also will serve as a reference for people with more experience.

Comb Teeth

A series of metal plates having teeth which ride the grooves of the step tread as the step passes underneath. These teeth are designed to be extremely brittle which allows them to break off if a wedging action should occur at their point to contact with the step tread.

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