12-04-2015, 03:53 AM
#1
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Once in a while a solution to a problem I wasn't aware of is so brilliant I can't understand why no one has done it already... like Doroodian-Shoja Siamak's idea of putting a wear indicator on a disposable razor (although I can see no reason why one couldn't put in on a cart as well).


I use a disposable once every blue moon or so - basically when I'm flying with just hand-luggage - so I have no recollection of how many times a particular disposable have been used.

In the inventors own words:

Quote:A wear indicator is located on the head or frame of a disposable razor or razor cartridge, in close proximity to the shaving edge of the blade. The wear indicator comprises a mass of material that gradually wears away as the disposable razor or cartridge is used in shaving, the amount of material wearing away being correlated with the amount of wear on the blade edge to provide a visual indication of the relative wear on the blade. Preferably, the wear indicator comprises two strips of material, one atop the other, the upper strip wearing away to reveal the contrastingly-colored lower strip. Alternatively, the material may wear away to reveal indicia or lettering on the lower strip.

Considering how many carts already have a "lubricating strip" (which, by the way, has not been shown to work as promised), this invention may be combined with it - or replacing it.

[Image: US5388331-1.png][Image: US5388331-2.png][Image: US5388331-3.png][Image: US5388331-4.png][Image: US5388331-5.png]
Unlike most other patents I dig up and post about, this one is still on the books btw.

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 12-04-2015, 04:39 AM
#2
  • eengler
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  • South Dakota, USA
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Thats a pretty recent one Hans (1995). I wonder what materials have been tried as the melting strip. Hard sugar like a lollipop might work but it should be without flavor Tongue

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 12-04-2015, 08:00 AM
#3
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That's interesting, thanks for sharing.

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 12-04-2015, 08:19 AM
#4
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Isn't that what the fusion carts have already? I used to use those and when the strip turned mostly white I changed.

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 12-04-2015, 08:29 AM
#5
  • eengler
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  • South Dakota, USA
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(12-04-2015, 08:19 AM)Hobbyist Wrote: Isn't that what the fusion carts have already? I used to use those and when the strip turned mostly white I changed.

Yep, Blue to White. So similar but not the same as a material that wears away to reveal the surface below.

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 12-04-2015, 10:09 AM
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(12-04-2015, 08:29 AM)eengler Wrote:
(12-04-2015, 08:19 AM)Hobbyist Wrote: Isn't that what the fusion carts have already? I used to use those and when the strip turned mostly white I changed.

Yep, Blue to White. So similar but not the same as a material that wears away to reveal the surface below.

Same idea, different execution. What I liked about this one awas the ability to do interesting patterns, or have it act like one of those tape-style fuel gauges.

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 12-05-2015, 05:29 AM
#7
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Itnearly impossible to judge blade wear accurately. Especially when your wear strip is comprisef of material with a different wear pattern.

Ever noticed all those threafs were a worn out used up no good blade was suddenly brand new again after a sosk in alcohol and being placed in a different razor?

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