"Folding" Bench Seats - no hardware!

Private Lugnutz

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This design may be well-known by many here, and maybe I am too easily impressed, but I was very intrigued by these flexible temporary seats installed in an examination room in a very modern hospital. A couple sets, on adjacent walls, to accommodate extras (guests of the patient, perhaps PA's or interns). Extremely efficient, obviously, in terms of space. They don't have to be stored or moved out of the way to wheel things in and out of the room. But what's really cool is - no hardware. No folding steel hinges, arms, legs, or other parts. I think everyone probably gets the concept just looking at the photos. I was thinking it would be useful in a camper, but I can actually see it in a so-called Tiny House, or a classic A-Frame, even in a den or a reading nook or wherever in a regular modern house. Has a kind of austere, Scandi, almost sci-fi (space pod) style to it.
 

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Private Lugnutz

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Wonder how strong it
I was wondering that even as I tested it, and even as my wife joked about me - not exactly light at 225 lbs, breaking it! :) They seem strong. You can feel it "give", but it's plenty sturdy. What I wonder about is how many sittings it has in it. Each time it is used it compresses the slats against each other. They are heavily laminated and coated, but it has to wear eventually. Probably not for everyday use. But nifty nonetheless.
 

Old tool guy

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Not sure i understand how it works. Second picture where you hand has it bent down … is that what you sit on?
 

The Cobbler

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took me a while to figure out how it works too. Grab the seat cushion & pull forward and down , it pivots on the bottom.
I'm not sure in a Hospital environment how sturdy they would be, or how easily they are cleaned to be germ free
 

MichaelP

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Clever.

But I'd suggest them to be tested in the waiting area of the Department of Orthopedic Surgery, first.
 
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Private Lugnutz

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Second picture where you hand has it bent down … is that what you sit on?
Wife's hand, (I couldn't get far enough away to snap the photo without her help), but yes. That's the seat. Much like any other folding chair, but no hinges or legs, and it's mounted on the wall.
Grab the seat cushion & pull forward and down , it pivots on the bottom.
I wouldn't say pivot is the best word to describe the action, but yes. Not arguing semantics with you, just trying to make sure you do indeed understand the action. The seat is not rigid, it literally bends. Those nine (9) beveled slats are the key to the whole design. The very bottom of the seat is bolted to the backrest/wall mount. The beveled slats in the middle allow the seat to fold, but they also fit into each other under the pressure of the seated person's body. When bent into a ~90* angle, together they form a flexible, semi-rigid cushioned seat bottom. (See drawing.)
But I'd suggest them to be tested in the waiting area of the Department of Orthopedic Surgery, first.
Funny, but I was also wondering about codes. The building itself is brand new - a suburban adjunct of a major world-renowned hospital located in Manhattan, with ultra-modern architecture, and these seats were in every examination room, so I assumed it did actually pass some tests.

Now I'm wondering how pervasive this design is in similar or other commercial or industrial settings.
 

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Private Lugnutz

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I was going to call the hospital later, but AI (Google Lens) just identified the source for me.


1774437427062.png
 

mike93lx

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I have to imagine there is a piece of spring steel in it. Wonder how thick that is and how it attaches as there are no bolt holes except at the bottom
 
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Private Lugnutz

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I have to imagine there is a piece of spring steel in it.
You may be right. I just spent some time poking around their site for specs (tested to 600lbs by the way!), which includes free CAD/REVIT downloads and a Configurator for architects, and found this Materials release, which implies it. Probably very thin gauge in the backing of that cushion. If money was no object, I'd be interested enough to buy one just to deconstruct it.

1774439335660.png
 
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mike93lx

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You may be right. I just spent some time poking around their site for specs (tested to 600lbs by the way!), which includes free CAD/REVIT downloads and a Configurator for architects, and found this Materials release, which implies it. Probably very thin gauge in the backing of that cushion. If money was no object, I'd be interested enough to buy one just to deconstruct it.

1774439335660.png
I bet the price for one is astronomical
 
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Private Lugnutz

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Unlikely they even have them priced that way. I just meant I'd be very curious to take one apart. It's patented, to prevent commercial and industrial scale copy, but the design is so simple it would be fairly easy for an individual to make for individual use.
 

alinc100

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I was going to call the hospital later, but AI (Google Lens) just identified the source for me.


1774437427062.png
Neat product. From an installer point of view I'd love to see an auditorium of those, just so we could freely move scaffold through wider spaces when installing overhead.
 

Jayman17

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Pretty clever design, any idea how those wedge shaped slats are attached in the chair you saw at the hospital? The one on the website looks like it has a thin layer of wood under the slats but not the one at the hospital. :headscrat
 

minke

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I was wondering that even as I tested it, and even as my wife joked about me - not exactly light at 225 lbs, breaking it! :) They seem strong. You can feel it "give", but it's plenty sturdy. What I wonder about is how many sittings it has in it. Each time it is used it compresses the slats against each other. They are heavily laminated and coated, but it has to wear eventually. Probably not for everyday use. But nifty nonetheless.

If I understand correctly, it's durability is limited not by compression of the slats, but on tension within the upholstery.
 

jar944

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I have to imagine there is a piece of spring steel in it. Wonder how thick that is and how it attaches as there are no bolt holes except at the bottom

Looks like 2 springs
 
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Private Lugnutz

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^ No. No visible fasteners. It may just be strong adhesive. There's a whole CAD/REVIT section on their website if you poke around where you can download drawings, specs, etc. < That was in reply to @Jayman17

I can see why the hospital went with mauve or cream cushions, but aesthetically, the black cushions really look great against the blonde wood finish.
 

tarbellb

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Very cool and elegant design

I don't think the wood or fabric is doing the heavy lifting (or holding). I bet there are straps, maybe woven nylon like seatbelt material anchored to the leading edge area of the seat and runs to the base where you see the 4 screws. The straps hold the weight, the wood is merely a hinge, and the cushion is attached over the top, maybe via a cleat or adhesive

Clever
 
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Private Lugnutz

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...any idea how those wedge shaped slats are attached in the chair you saw at the hospital?
Screws, through the seat, under the cushion. (I finally made some time to study the patent in detail.)
I don't think the wood or fabric is doing the heavy lifting (or holding). I bet there are straps, maybe woven nylon like seatbelt material anchored to the leading edge area of the seat and runs to the base where you see the 4 screws. The straps hold the weight, the wood is merely a hinge, and the cushion is attached over the top, maybe via a cleat or adhesive
As @mike93lx first surmised in post #11 and @jar944 confirmed in his interpretation of the patent diagrams he posted a link to in post #18, the seat is hiding two "spring bands," made of thin gauge spring steel.

There are thirty-seven (37) figures, but this one is the key...

1775034973901.png

The spring bands are 40 and 42.

It's neat how the patent insightfully refers to the section of beveled slats (28), needed for the seat to bend, as "vertebral".

Art (in this case, architectural or industrial) imitating nature, again.
 
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tarbellb

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Ah.... there it is

Spring steel makes more sense, it needs to retract back up as well

Thx for posting the diagram
 
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