How to couple two poles to make a quick extension pole?

Application? Will not twist? How much torque in each direction? Easily pull apart as in? just pull back, or manually disconnect? More details man - there's at least a thousand ways of doing something that MIGHT fit your reqiuirements.

There's a reason that poles usually telescope.

If I absolutely had to daisy-chain the poles, I'd look at using Dinse welding cable connectors to mechanically hold the lengths together. They are nice, tight twist-lock connectors and the price is entirely reasonable for what you get.

Light pole changer. Must twist in both directions.

Bring down bulb from 15' ceiling.

Place 10' pole on floor.

Remove upper 5' pole.

Place upper pole on floor.

Remove bulb.

Plastic plumbing pipe. Shove the sections into couplings and they'll stay together - good enough to hook a clothesline back over the pulley. Plus you can easily glue/bolt/clamp something to a coupling and stick that on the end.

Gotta twist off a hard to remove floodlight, etc.

I like the PVC suggestion.

Cross drill and stick a screw through 'em.

Richard

Not fast enough.

Slip on, twist without slipping, slip off.

No more than 1 second to slip poles together or to pull them apart.

Why? 'cuz that seems a bit over the top.

That is the spec.

Swage one pipe so they slide together, "Wishbone" style pin lock like used on swimming pool vacuum poles.

But I use a standard twist-to-lock painters roller style pole to change light bulbs all the time. If you have to put enough torque on the pole that overrides the locking tension on the pole sections, you've got bigger problems with either the lamps or the sockets.

First, you have to define the REAL problem, then you can solve it.

Cheap imported aluminum base lamps and cheap aluminum shell sockets are always bad separately, but when they are combined and you add any moisture at all and allow time for them to corrode to each other...

Buy the better brass or nickel plated brass based lamps, and brass shell sockets. Then they'll come apart without a big fight.

-->--

So cross drill the coupling portion and insert a suitable roll-pin. Cut notches in the mating pipe to fit roll-pin.

BTW, Jim, are you the author of _Single Variable Calculus_? I picked it off of my son's reference shelf today to look something up, noticed the author's name, and though, "hmmm...."

-- Ed Huntress

Nope. I only wish I were that good at math. Got a couple patents and my name mentioned in a couple books though...

Why not just buy one?

one?

$2.00 vs $20

In addition, extension poles are not designed to rotate in use.

This is for a product that I am thinking about selling..

It must be effective and also very inexpensive

Make em in a hex shape at the coupling so they don't rotate. Fix the coupling on one pole.

Will there be royalties for the best idea?

Tether 'em with a string of elastic through a hollow center. Congrats, you've re-invented the modern tent pole. The original poster should make a visit to his local sporting goods store and look at how the poles on the dome-shaped tents work.