An improved health and safety system for a table saw includes one or more of: a blade guard that protects the operator from the saw blade, and contains and collects sawdust; a proximity detector and emergency saw motor braking means for use in connection with such blade guard; an anti-kickback device...http://www.google.com/patents/US8082825?utm_source=gb-gplus-sharePatent US8082825 - Health and safety system for a table saw
