BTW, I searched the U.S. Patent data base at the USTPO.GOV website for Igniters and Rockets, but no hits on the Cox Safety Igniters so far. I actually have also been corresponding this week with Doug Malewicki, who was the head of Advanced R&D at L.M. Cox Manufacturing Company from 1970-1975, to see if he can share any additional information. He did not have the patent number for the Cox Safety Igniters available, but he may be able to provide additional information. I'll let you know if he does.

Below is a photo from the Cox Handbook of Model Rocketry pages 20-21, showing that Cox had a patent pending for the Cox Safety Igniter. Link: http://www.ninfinger.org/rockets/ca.../coxhand20.html

The Cox Handbook of Model Rocketry page 12 described installation for the Cox Safety Igniters and shows a cutaway of a typical Cox model rocket engine as well. Another view of the Cox Safety Igniter installation is on page 8 of the same booklet.

Kind regards,
Jeff Jenkins
aka: Faithwalker
NAR #46879 SR

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