90/10 Turbo faucet

Problem: most faucets are easy to open up to 100% and they waste a lot of water. Water-saving faucets help, but they have annoying features like shutting off too soon or a permanently low maximum flow.

Solution: Create a faucet that is normally water-saving, but can go into turbo mode when a lot of water is needed. Here's the design:

1) Start with a standard level action kitchen faucet where raising the level turns it on and moving it side to side changes the temperature. 2) Configure the faucet so that the first 90% of the swing opens the faucet just 10%, and the last 10% of the swing opens up the faucet the remaining 90%. 3) Add some resistance so that the first 90% of the swing is easy to move, but the last 10% requires a more significant push.

Here's the scenario:

Billy comes in for dinner and mom says to wash his hands. Billy slams the faucet open, but because there is extra resistance at the end, the faucet only opens up 10%, which is plenty for washing hands. Later, mom needs to fill the sink with water to wash a few dishes. She deliberately pushes the faucet open to 100% so that the sink will fill quickly.