Sunday
April 20, 2014

Homework Help: motorised gates

Posted by Writeacher on Sunday, July 22, 2007 at 6:22am.

Try this website:
http://www.howstuffworks.com/

Try different search terms until you find what you're looking for.

=)

how do they work ?

A trick many employ to open and close gates: they use an endless helical drive screw, so the motor turns the screw only one way. It has limit switches on each end to shut off motor.

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