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I'm researching iris mechanisms with the goal of building a functioning, weather-sealed door. I am learning much as I go along, but am faced with a challenge in nomenclature (I am not an engineer).

I am using Google to search for non-overlapping iris mechanism designs that have the smallest possible distance from the outer edge of the opening to the outer edge of the 'housing' (the word that naturally comes to me to describe that part of the device) - but I am stumped about how to narrow down my search results.

Using the terms "small housing", "narrow housing", "smallest perimeter" etc are not proving to be useful when searching. No meaningful changes in the search results (and there are a gazillion results - I didn't know this mechanism was so popular in the DIY home-cnc world). "Enclosure" and "concealment" do not seem to impact the results much either.

Can anyone advise me on what terms I should use that will enable me to narrow my results? <--- THAT is the question being asked.

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I have found iris diaphragm patent and there are other patents cited, you can find shape of the blade in one of them. Modifying shape of the blade you can get full closure. I do not think that size is relevant. Though waterseal might mean hydrostatic pressure thus increased moment and stresses so size might be important. There are also questions of intelectual property. Because your design would be based on someone's patent in this case.

Second source that might be relevant was sliding iris mechanism.

Katarina
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