US Government is About to Change Table Saws FOREVER!

[DLB]

Sawstop did say they would license necessary patents on FRAND basis if the rule were to pass.

Can you provide a reference for that one? There are several comments in the proposed rule document that seem to conflict with it. Perhaps the offer was made in or near 2003 when SawStop petitioned for the rule. In which case it may not still be on the table.(?) There are plenty of comments/concerns in the document where I would think CPSC would have provided this answer, if they believed it to be true.

- David

[JPG]

That would be consistent with what was their alleged initial intent back then.

[algale]

US patents expire 20 years (or less, in certain cases) after their application date (not issuance date). Should SawStop's original patents not be expired by now? No doubt they have others, but those would almost certainly contain claims related to secondary/detail issues, which cannot extend the protection period for the claims in the original patents.

Right you are Dennis. I don't think that it is a coincidence that the CPSC delayed 20 years before contemplating moving forward on this. Guessing the patents are or will be expired.

[HopefulSSer]

Their original patents are, but I'm sure there are more that are not expiring and which they will no doubt seek to enforce

[twistsol]

Sawstop did say they would license necessary patents on FRAND basis if the rule were to pass.

Can you provide a reference for that one? There are several comments in the proposed rule document that seem to conflict with it. Perhaps the offer was made in or near 2003 when SawStop petitioned for the rule. In which case it may not still be on the table.(?) There are plenty of comments/concerns in the document where I would think CPSC would have provided this answer, if they believed it to be true.

- David

The comment was in an email from 2019 - the previous attempt by CPSC to push forward a rule. The last sentence in the second paragraph basically says they'll look into putting together a licensing package should the CPSC actually move forward with a rule.

[JPG]

I think S. Gass's attempts to cover the world patentwise has made this much more difficult.

Wish I knew more about the two patents that Bosch was infringing.

[thedovetailjoint]

Sounds like an urban myth to me!!!

That's what happened.

Scott,

Okay, I'll play along. Where are the pics of the flipped over Mark V? Any other details for how this happened, i.e. what was being tested specifically? Up above, you can see where I posted a video of the Bosch Reaxx (small, light portable contractor TS) when it had a trigger event causing the cartridge to activate and stopping the blade. Also, SawStop has smaller footprint saws of the contractor TS variety now as well. IF a light saw like this can stop a blade without flipping over, what was so different about this special test at Shopsmith that caused a beefy Mark V to tip over when these other saws do NOT? Hopefully those of you with critical thinking skills can understand my reasoning for calling this out. IF what you say happened was real, then they were doing something far different than just trying to slow/stop a sawblade on that Mark V. Now, if a 10 ft. long steel bar was attached to the sawblade in an attempt to stop it, then yes, I would believe it flipped the Mark V over during this Friday afternoon of fun at Shopsmith HQ.

BOSCH REAXX VIDEO:
viewtopic.php?p=313611#p313611

I wish I had the evidence you request.

[JPG]

I am guessing the entire drive train was 'stopped' rather than just the blade.

After all the SS IS top heavy compared to a typical saw.

[RFGuy]

I wish I had the evidence you request.

Scott,

It isn't so much about providing "evidence" as details matter. Are there any other details you can remember about what was being done to this poor, defenseless Mark V to cause it to flip over in Shopsmith HQ during this test? This started off as someone sharing your anecdote here on the forum and I jokingly referred to it as an urban myth because I find it hard to believe. Then several forum members attacked me indicating that I don't understand science...if only that were true. Are there any other details you can share from this story that might help a skeptic like me to believe this floor kiss test that Shopsmith engineered? In the proverbial words of Fox Mulder, "I want to believe".

[JPG]

Rethink this as not blade stoppage, but as power train stoppage.

That introduces far greater angular momentum.

Is that greater than the torque required to tip it over?

I am curious WHAT was being used to create a near step function in deceleration.