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Quiet Latching Doorknobs
Door latches are spring-loaded, and they wake me up. Put a little hydraulic thing in there, and have it latch quietly. | |
Every morning, my wife tries to be nice and closes the door when she leaves. She does it slowly, softly and quietly.
However, every morning, the latch in the handle passes the strike plate and shoots into the door jamb with a loud "plunk" that wakes me up.
Sure, she could turn the handle, but
she doesn't.
It shouldn't be too hard to miniaturize the same hydraulic tube they use on screen doors to have the latch start quickly into the hole in the door jamb, but then softly complete its full extension, thus not waking me up.
Sure, this probably doesn't make sense in cheap doorknobs, but I'm sure there is a niche market for such a product.
Plus they'd be cool, and an innovation in a pretty stagnant doorknob industry.
Touch Sensitive EM Doorknobs
Touch_20Sensitive_20EM_20Doorknobs
My idea is kind of like this HB user, but with hydraulics you don't need a power source. You still need to turn the handle though. [ooglek, Mar 15 2006]
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tell her to leave by the window - thoughtless woman. |
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"She came in through the bathroom window"; You would expect her to leave the same way. |
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Instead of a plain steel tongue, the latch should be a roller, which will roll over the edge of the socket, have a much shorter distance over which it can accelerate freely, and the pocket into which it latches should be have a nylon insert. It won't be completely silent, but the difference should be similar to the difference between old "Click" style light switches and new quiet switches. |
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A geared mechanism, installed within the door frame, activated by the pressure from the latch rotates a small fan. Air resistance will then slow the latch enough for it to be almost noiseless.
How can we install bluetooth on this thing? |
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[bigsleep], and a bright light for the hearing-impaired. |
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Use friction to slow the latch. The heat generated could power a small Stirling engine to power the speaker unit. |
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