What does the word "Esterline" mean?

[grizzly]

I'm reading a self study document from Whirlpool's servicematters.com site, and ran accross three terms I didn't know: stile, mullion, and esterline. I've been able to determine what a stile and mullion are by searching this forum, but I don't know exactly what they mean by "Esterline". Based on the context of its uage, my guess is that it is either a proper noun, as in the type of timer or the manufacturer of the timer. Or that the word is describing a type of chart (ie: a gantt chart, a flow chart, an esterline chart?)

The context in which it appears is on the title page of the job aid and looks something like this:

Basic Electricity

Study Course for Home Appliances

How to Read:

• Timer Sequence Charts

(Esterline)

•  Wiring Diagrams

Here is a link to the pdf:

https://secured.whirlpool.com/Service/SrvTechAdm.nsf/2cd44500d572193285256a45004fd9d6/4305d115faa0e36d85256b060053cc88/$FILE/787741%20%233.pdf

Anyone have any idea what the word esterline means in this context?

[Trying to help]

You're all over it my man.  Esterline or Esterline chart is another word or phrase for timer chart or cam chart.  It is a time-line that is showing what cams are closed at a particular point in a cycle.