There are numerous references to this item on the internet. All state it was invented by Vernon Gleasman and patented by him in 1958. Gleason Corporation made them. Gleason are famous for gear design and gear cutting tools and tooling.
Torsen - Wikipedia
History of Invention - Overview
Gleason Corporation
Gleason bought the patent from Vernon Gleasman in 1985. I don't know if Gleasman or one their multiple companies still owns the rights.
URSUSMAJOR
NOT INVENTED HERE
Regards PhilipA
Pedro, yes from new, but the NIH raised its ugly head, according to the wise feloows here. I mean the things are out of patent. just redesign it.
D2a Td5 Manual, Chawton White. aka "Daisy"
Build date 11th Oct 2003
Freelander 2 2011, manual, the daughter calls it Perri
Before I had a Land Rover I did not have any torque wrenches. Now I have three.
LROCV #1410
As many of you know I worked at Leyland Truck & Bus when T&B were the LR/RR distributors. Our people agitated for years to get the poms to put some engine into the LR/RR product. Same in trucks. Leyland was dropping heavy truck market dramatically. We told the poms that we needed a 400 hp prime mover capable of hauling a tri-axle semi-trailer at 60 mph cruising speed and we needed it right now not in 10 years. The amazing reply was that no-one needed a 400 hp prime mover.
The poms thought dumb colonials had no idea of what was needed. We were patronised or ignored.
They could have made that Buick engine into the base model at 3.5 litres and offered an option of 5 litres (the Buick 300) and had a LR with decent performance and cruising speed which is what our customers wanted and bought Toyota to get it.
URSUSMAJOR
Brian, it extended to silly things like the lack of weather sealing in the 110, (what size nozzles, number and pressure in your spray rig, the 110 made to spec leaks like a sieve. "What water spray rig?") and the stupid spaghetti sized tie rod and drag link (the LRA built Perentie had 32mm versions) the weak lower rear trailing arms on Tdi on 90/110's and even into the late 90's/2000's when Mark was employed as a consultant and made the TD5 electrically quiet to replace the 4BD1 in the Perentie for the ADF (which didn't happen because of the Ford/PAG takeover) the Poms wouldn't believe it could be done as they'd already spent several hundred thousand pounds trying and failed, so he had to fly to the UK with the new loom in the briefcase to prove it
![]()
Ego=NIH
Change in production = Not desirable = Too much work for someone and something could go wrong then I’ll be blamed (risk with a down side and no reward for the person taking the risk)
Cost??? No one wants to eat into the budget.
That is why engineers are prepared to consider “improvements” that is what they live for. Management is about minimising change, staying on time and on budget. Changes are made in development. Once in production Managers see change as a chance for failure.
OK I found the article on Factory fit torque biasing diffs way back from 2018 .
Attachment 160772
Regards PhilipA
| Search AULRO.com ONLY! | 
    Search All the Web! | 
  
|---|
| 
 | 
 | 
Bookmarks