The patent of the week goes to the Honda Windscreen Washer design, or more specifically the “Wiper Blade“.
Honda paints the picture well:
Normally, the washer liquid is injected from a nozzle installed to a hood (bonnet) of the vehicle or the like on the windshield. In this case, there are disadvantages as follows. That is, the injection position of the washer liquid may intercept a field of view from a driver and the like through a windshield. Since the distance between the nozzle and the windshield is relatively long, the injection position of the washer liquid may be deviated by traveling wind or the like. Since a relatively large amount of washer liquid is used in a flow passage, a washer tank may be frequently refilled with washer liquid.European Patent EP3100920B1
The patent involves a fluid channel running within the carrier of the wiper blade, which can spray washer fluid directly onto the windscreen very precisely, improving the coverage and efficiency of the wipe. The additional benefit comes from reduced fluid usage and the ability to specify a smaller pump as the jet does not have to spray as far.
The current patent shows a bi-directional spray pattern that allows for full coverage within one reciprocal cycle of the wiper blade.
This makes a lot of sense. The washer jets have typically been on the bonnet, although of late manufacturers have been better at concealing them. Aim then becomes a critical element of their function.
In my S2000, if the roof is open, some fluid inevitably blows over the windscreen and onto the occupants.
If the pipes carrying fluid to the wiper apparatus does not degrade and can live with the rotational movement, this could be a useful patent that makes it to serial production. Clever design can conceal the pipes, and if the jets are hidden within the carrier to allow for a range of compatible wiper blades, then it seems like a genuine improvement.
If not, changing your wiper blades may become a service item fitted by the dealer or become expensive for manufacturer and consumer as you are restricted to specific wiper blades which will always seem to be out of stock when you need them.
What do you think? Amazed no-one has thought of this before? Share your thoughts in the comments below.