http://en.wikipedia.org/wiki/Scroll_compressor
"A scroll compressor operating in reverse is known as a scroll expander, and can be used to generate mechanical work from the expansion of a fluid."
Fred
1979 Ingersol-Rand Patent 4,157,234
Devices of this type, generally referred to as "scroll" pumps, compressors and engines, have two interfitting spiroidal or involute spiral elements of like pitch which are mounted on separate end plates. These spirals are angularly and radially offset to
PAT. NO.
Title
1
7,086,844
Multi-stage scroll fluid machine having a set a seal elements between compression sections
2
7,001,161
Scroll fluid machine
3
6,922,999
Single-winding multi-stage scroll expander
4
6,764,288
Two stage scroll vacuum pump
5
6,682,328
Multi-stage
Jones wrote,
First of all, the 'eureka moment' in question goes back further than
Archimedes - it is Mother-nature's idea - biomimicry at work.
Howdy Jones,
Surprising how many Texas AM engineering school undergrads are now
tracking your posts on this subject via my secret code ring
[Original Message]
From: What's New [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Date: 10/6/2006 9:54:32 AM
Subject: [BOBPARKS-WHATSNEW] What's New Friday October 6, 2006
WHAT'S NEW Robert L. Park Friday, 6 Oct 06 Washington, DC
1. THE PHYSICS PRIZE: LOOKING BACK AT THE EMBRYONIC
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