Johannes Winkler

Overview

Link to videos
https://photos.app.goo.gl/WKkcQRDMT8vKUALX6

Problem: Streets or sidewalks are usually sloped outward by a few degrees — a “slanted plane.” This causes the wheelchair to drift downhill: to keep moving straight, a lot of effort is needed to counteract the drifting. It’s a familiar problem, like when you push heavy crates at a beverage store, and the parking lot isn’t completely flat.

The idea is to incorporate a steering component into wheelchairs. The small front wheels tilt uphill, neutralizing the lateral force, allowing the wheelchair to move across a sloped surface without effort. I’ve already had the chance to try it myself. It’s really amazing! 🤗
Johannes Winkler

4 videos available at:
https://photos.app.goo.gl/WKkcQRDMT8vKUALX6

Von Johannes Winkler, vor

Overview

https://photos.app.goo.gl/WKkcQRDMT8vKUALX6

Problem: Straßen oder Gehsteige sind meist um ein paar Grad nach außen abfallend. Eine „schiefe Ebene“. Der Rollstuhl bricht dadurch hangabwärts aus: zum Geradeausfahren muss viel Kraft gegen das Ausbrechen aufgebracht werden.
Man kennt das auch vom Getränkemarkt, wenn der Parkplatz nicht ganz eben ist und man volle Kästen schiebt.

Die Idee ist, eine Lenkkomponente in Rollstühlen einzubauen. Die kleinen Vorderräder neigen sich hangaufwärts, dadurch wird die Seitenkraft neutralisiert, und der Rollstuhl kann ohne Kraftaufwand über eine schiefe Ebene bewegt werden. Das ansteuern der Neigung ist im Prototyp noch nicht optimal umgesetzt. Die Lenkung funktioniert aber perfekt. Habe das schon selbst probieren können. Echt spitze! 🤗
Johannes Winkler

4 Videos unter:
https://photos.app.goo.gl/WKkcQRDMT8vKUALX6

Von Johannes Winkler, vor

Shopping carts

Hi 😊.. I also try to contact producers of shopping carts. The same problem exists for those vehicles: On an inclined plane they tend to go downhill. With tiltable front wheels this down force can be eliminated mechanically – like on a carving ski… You just adjust a bit uphill, then the force is eliminated. Please see other posts also… 🤗🙂

Von Johannes Winkler, vor

My current plan…

Currently I try to find manufacturers for wheelchairs in China and India. I send them an Email with a link to this page. My experience in Germany was, that I don’t get a response for my calls and emails. I think, producers here decide against this idea, they prefer to sell more expensive electric wheelchairs. My idea is, there might be a bigger market for this idea in other regions of the world. I keep on going ☺️🐝

Von Johannes Winkler, vor

The story behind…

In the early 2020s I met Franz Baier from Rotthalmünster, Germany. He is a retired mechanic for cars. He told me, that some decades ago, he was helping someone in a wheelchair. He noticed on an inclined plane, that it is hard to go straight and to work against this down drift. So he thought about a solution for this problem years later. He came up with his solution of a balanced wheelchair, with tiltable front wheels. I tried one of his prototypes my own, and it works just perfect ❤️❤️❤️.

Franz told me, he is to old to bring this into the market, but he made a patent for his invention. This patent is „free to use for everyone“. Franz is very idealistic, an outstanding person with strong believes.

So, now I try my best to make some progress here…

Von Johannes Winkler, vor