I thought you were joking - but no; I found a patent for "Method of swinging on a swing".
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Ha - I used something suspiciously like Fig. #5 years ago to water, er, well, fill an inaccessible brake fluid reservoir... got a funnel and a piece of tubing and went to it (no level monitoring though).
Well I am hoping the watering funnel is not a granted patent, but Larry is right: it is certainly the right balance of effectiveness v simplicity.
About 30 years ago I made something similar for emptying buckets of water out of my parents' leaky attic and it still works. My 'funnel' was a cut-off plastic Coke bottle.
I have #5. It is the best solution for watering trees I have ever had. It also has a long pipette that slides down inside the watering tube to check how much water is in the stand. I've seen all kinds of complicated solutions to this problem including pumps with level monitoring, and siphons with remote filling tanks, etc., but sometimes the simple solution involving a bit of plastic is the best. This kind of innovation is why the patent system was created.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Are the design challenges the same as with embedded systems, but with a little developer- and IT-skills added in? What do engineers need to know? Rick Merritt talks with two experts about the tools and best options for designing IoT devices in 2016. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.