Gravity mechanism - new to me, looks sexy.

[Houlahound]

Never seen one before the youtube algorithm served it up.

Me like.

 

[91bravo]

Looks like a knife with a built-in tip duller.

 

[jlauffer]

Very similar to the old Cold Steel Triple Action

 

[abcdef]

Wow.

 

[WValtakis]

And the Fred Perrin Le Tri-folder...not really new at all.

 

[fly36gti]

True gent knife

 

[tltt]

Design's at least 100+ years old. I can't find a picture of the oldest German versions, but here are some pre- WWII US versions -

Ka-Bar -

.

Marble's -

.

.

Marbles Safety Fish Knife ( They made a repro a few years ago ) -

.

In the US, it tended to be a design used for knives that might need a deep cleaning. The downside is you'll cut it the handle frame and dull the knife if you try to open them fast, as mentioned.

 

[eveled]

I don’t think there are any new ideas left.

 

[Dangerously]

Very old design. Along with switchblades, one of the few types of knives explicitly prohibited as weapons in Canadian knife law. Shame, as I would absolutely carry one of these otherwise.

 

[Dr Heelhook]

And the Fred Perrin Le Tri-folder...not really new at all.
View attachment 1223069

Design's at least 100+ years old. I can't find a picture of the oldest German versions, but here are some pre- WWII US versions -

Ka-Bar -

.

Marble's -

.

.

Marbles Safety Fish Knife ( They made a repro a few years ago ) -

.

In the US, it tended to be a design used for knives that might need a deep cleaning. The downside is you'll cut it the handle frame and dull the knife if you try to open them fast, as mentioned.

These are not the same as the one in the OP's video. On that one, you hold on to the middle section, which is also the one that would end up on the outside and serve as the handle when the knife is opened. The Cold Steel version would be more similar, but the one in the OP's video seems like the best version IMO.