Must have a payload platform on the truck in order to haul anything.
Tools will slide back when loading because of the amount of tilt needed to load.
(Better have everything bolded down alright.)
No over the cab lumber racks allowed.
Hook-lifts are just plane ugly.
Most Hook-lift designs have a sliding jib, which will allow for more variations in payload platforms, but when the payload is loading and being driving down bumpy roads, the hydraulic cylinder is stored in the extended position, which is not go for the cylinder bushings, shortening the longevity.
Some Hook-lift designs have a bending jib instead of a sliding one. But the problem with them is they are more likely to smash up the top of the box you are trying to pick up. See Fig. 4 below
Both types, you can't see the hook engage because the arm is in the way.
With a Synchro-link, the operator can line up the hook by viewing it through the review mirror.
Both the one above and the one below had filed for their patents a couple years before and a couple years after I filed for my link type. I've notice I even had the same patent examiner and one of the hooklifts.
I'm going to some investigating into finding out if it's the same version of the hooklift that the examiner provided as prior are against my invention. (And anyone can tell my invention doesn't infringe on a hooklift, so why should I have to defend mine to it?)
There is a deal about the patent office is suppose to keep a pending application confidential if there isn't a sister application in another country, and even then they are not suppose to publish it until the application is 18 month old.
When looking into the design features of hook-lift systems, one should consider things such as the type of hydraulics used in the systems.
Systems like the Ampliroll are designed with high pressure hydraulics. Anyone who works on such systems know that they are much more problem prone and more likely to ware out prematurely and more costly to maintain and repair.
High pressure systems are designed to run up to 3,500 psi are more prone to blow seals and have a shorter life expectancy. High pressure cylinders are also more costly to replace. The reason for using such systems is usually to save weight by using smaller pumps and reservoirs. Another disadvantage is that most hydraulic accessories run on lower 2,500 psi
You just can't beat a Synchro-link that operates on less than 2,500 psi..
HookLifts have a predetermined ark that requires an additional sub-frame because of the leverage needed to hoist the containers with a boom that is obviously less stable..
This type of design requires nylon type bushings with in the boom are so that the boom and extend and retract. Which means a little dirt may add up to one sloppy boom someday.
Ah plastic yah say. Yucky.
This photo shows a Swaploader type hook-lift with a sliding boom and double pivot link incorporated into it because of the lack of downward reach. Simple an effort to make it less dependent upon needing level ground to work at all.
But if you ask me, it's kind of funky and I happen to think it would be a weak link in the system for the price of too much added weight.
But what the hell, you can only get so much ark out of a cylinder actuated arm. /p>
This photo shows a rubbish container that was originally built for a large hook-lift. It was modified to work on a smaller system with a lower hook position which is even more dependent upon level ground.
Synchro-link not only requires less sub-frame than a hook-lift, but it also requires less frame support for the container
Hook-lifts require more space between the cab and the payload then a Synchro-link
Just try dragging a hook-lift's payload like a trailer from one spot to another without hoisting it on to the truck. Oh, you won't want to do that because it will likely slip right off the hook.
A Synchro-link has no problem draging its payload bed,
Note: some hooklifts have a hook design to avoid this problem by designing the hook to be more of an oval with a slot out of the middle as a way of having a catch on top as well as the bottom. But then just try getting to unhook without causing a bunch of rukus.
No over the cab camper or lumber racks can be use on a Hook-lift
If this hook-lift didn't have a telescopic boom, (jib,) just think how much tip the payload will receive. You just can't beat a
A Synchro-link can save weight by not using a payload platform at all.
Try hauling a bulk of plywood on a naked hook-lift' Yeah, you would be dreaming.
Bottom Line: Synchro-link just looks
better than a