Gas balanced brayton cycle cold water vapor cryopump
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 17, 2017
Grant Date -
Jan 10, 2013
app pub date -
Jun 6, 2012
filing date -
Jul 6, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The primary invention is to cool a water vapor cryopump using a Gas Balanced Brayton cycle refrigerator. The refrigerator is comprised of a compressor, a gas balanced reciprocating engine and a counterflow heat exchanger. It is connected to the cryopump through insulated transfer lines. Options include a gas storage volume with valves that can adjust system pressures, a variable speed engine, gas lines between the compressor and cryopanel that by-pass the engine, and a gas line that by-passes the heat exchanger. This system can cool down and warm up rapidly, rapidly warm and cool the cryopanel without warming the engine, and reduce power input when the cryopanel heat load is reduced.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- F04B Class
- 820 Applications Filed
- 689 Patents Issued To-Date
- 84.03 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 3 Citation Count
- F04B Class
- 31.99 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 17, 2028 |
