Free Idea, longest telescopic manual pruner pole for trees
A manual pruner pole (would love it to be electric but with such length that's be impossible because the weight at the head) but the blades they have some Fiscar and Corona brand ones that I see pros use on youtube and they stay sharp/can be sharpened and makes cutting limbs up to about 10" not that hard, the problem though is no one seems to make anything over about 20 feet for what you need is a square tube type rod not round, because square isn't as floppy and cuts better. I've been using a 25ft Mr Long Arm telescopic painting pole and I drilled a hold in the end in order to through-bolt a regular pruner pole head that has a ~10" curved blade plus one of those smaller branch cutters that is like a spring loaded cigar cutter that you pull a string and it activates. The problem is when I'm using it all the way extended it's too floppy and takes forever, all the force is lost in the flop of the pole it's like I'm just tickling it. I'm not a huge guy but I know I can still handle a much much longer heavier pole that is square and won't flop and is heavier metal and transfers the energy to the blade better. These are extremely useful for chopping dead/unwanted branches safely from the ground in stead of climbing a tree without safety gear or experience etc or to pay a tree climber a monopolized price that they'd want just to remove some limbs/branches. They're also good for coconut harvesting some species the coconuts are like 40 ft up. With the addition of also a 8 foot A frame ladder and the 25' mr long arm I can get some high up branches done but again it takes forever and is a hassle.
Temu says they have a 50ft pole but seems to be a type and only links to a 27 ft which is also round and you want square doesn't flop, similar to marshalltown big bad monster pry bar is a pry bar for prying well, anything heavy or can use it for prying up small tree roots or deep fence posts that have concrete this is also a square tube so it doesn't bend and become soft and weak eventually it's basically just a piece of ~$50 steel that they charge $300 for.
There's definitely a market for this idk like 40' thick durable square telescopic pruner pole is marketed towards professionals or those with coconut palms, etc, is also good for pruning the sharp triangle things some palm species shed and can be dangerous to be under if it falls or falls on something it's like a giant spear.
I don't know how it could be patented though, and if you'd need to patent like every country in order for china to not just steal the idea and undercut the price greatly once they see there's a market for these, and I don't know how much millions or whatever it would cost to even mass produce these but I just want to see it made and would buy one, and I think it's a sure shot that there's a decent market for it especially with good marketing , giving a bunch out for free to popular landscape/coconut harvesting youtubers to give their honest review they would says 'this thing rocks, I can reach super high and isn't too heavy, the other square ones are way too short I'm not a huge guy but I can handle this no problem and it's a joy to use because it's square and heavy so it transfers the energy to the cutting end, and with such length I can safely stand way back from the area the where the branch will fall, highly recommend this.
Can also be very useful for painting high up unlike the 24 foot mr long arm is made specifically for painting but is very floppy when extended. Some sheer wall exterior type painting is over a sloped hard pavement like a driveway that not only is sloped is dangerous even with an extension ladder that you can adjust each leg to make it level but also on smooth pavement the bottom can kick out much easier than if it's dug into grass, and so instead of dangerously doing that I've painting entire higher section of exterior houses with just the mr long arm, also attaching a paint scraper to it for prep using an articulating paint brush holder, and used the same articulating holder to hold a putty knife to apply wood filler over woodpecker holes, but again, it's so floppy that it makes it a hassle and I can handle a much bigger pole.
Might as well also add that the same goes for these telescopic power washer wand poles, I have a 25 ft aluminum was like $400 and is good until you need it fully extended then it whips around too easily and becomes a hassle and are constantly trying to pin point the perfect posture and angle etc while also moving it where it wants to flop all around and you're standing there looking straight up for hours getting a stiff neck.