07802426 is referenced by 74 patents and cites 283 patents.

The invention relates to systems and methods for rapidly and isothermally expanding gas in a cylinder. The cylinder is used in a staged hydraulic-pneumatic energy conversion system and includes a gas chamber (pneumatic side) and a fluid chamber (hydraulic side) and a piston or other mechanism that separates the gas chamber and fluid chamber while allowing the transfer of force/pressure between each opposing chamber. The gas chamber of the cylinder includes ports that are coupled to a heat transfer subassembly that circulates gas from the pneumatic side and exchanges its heat with a counter flow of ambient temperature fluid from a reservoir or other source.

Title
System and method for rapid isothermal gas expansion and compression for energy storage
Application Number
12/481235
Publication Number
7802426 (B2)
Application Date
June 9, 2009
Publication Date
September 28, 2010
Inventor
Benjamin R Bollinger
Windsor
VT, US
Agent
Goodwin Procter
Assignee
SustainX
NH, US
IPC
F15B 11/072
B66F 7/18
F02C 1/04
F01K 25/02
F16D 31/02
F02G 1/04
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