Archive for the ‘ flotation ’ Category

Progressive Rate Springs: What Are They Doing in My Bed?

Progressive Rate Springs: What Are They Doing in My Bed? If anyone of us knows what progressive rate springs (PRS) are, the first place we expect them is in wheeled vehicles. In fact, that is the intended application of progressive rate coiled springs, and that is what comes up first in an online search. So it surprising to find "progressive rate springs" in the description of a mattress. And a waterbed mattress, no less! Before we go on, let's see what a progressive rate spring is. Some...

Ubiquitous Vinyl – It Is Everywhere

Ubiquitous Vinyl - It Is Everywhere Vinyl - it is literally everywhere. It covers our houses, carries water into the house and sewage out, and bags our food and our garbage. It is hard; it is soft. It can be the box and the wrapping. We can pour out of it, drink from it, eat off it, and eat with it. It can protect our mattress, and in some cases can be the mattress. And it can be the casing on our remote. So what is vinyl? And how can it be used for so many things? When we say...

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