My friend Dan had a seizure 6 mos ago and is fine now.  But the  boss won't let him back to work.  He cuts and bends metal with an oxy acetylene torch most days (fixing metal train cars)   and the boss says "can't be safe."  Dan found a patent online for an automatic shutoff trigger switch that kills the flame if the torch is dropped.  Its a game changer for him if he can find a catalogue or a manufacturer for one of these things so he can get back to work.   Anybody heard of one of these?