PULSE TUBE COOLER
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
May 12, 2016
app pub date -
Jun 6, 2014
filing date -
Jun 6, 2013
priority date (Note) -
Published
status (Latency Note)
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Importance

US Family Size
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Non-US Coverage
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Abstract
There is disclosed a cold head for a pulse tube cooler, comprising: a regenerator having a first end connectable to a compressor; a pulse tube having a first end and a second end; a heat exchanger connected between a second end of the regenerator and the first end of the pulse tube; and a phase control device connected at the second end of the pulse tube for controlling the flow dynamics in the pulse tube to provide cooling at the heat exchanger, thereby maintaining a negative temperature gradient between the first and second ends of the regenerator, wherein: the pulse tube comprises a wall having a porous portion for allowing a working gas to enter or leave the pulse tube directly through the porous portion, the porous portion being nearer to being parallel than perpendicular to the temperature gradient between the first and second ends of the regenerator.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
OXFORD UNIVERSITY INNOVATION LIMITED | UNIVERSITY OFFICES WELLINGTON SQUARE OXFORD OX1 2JD |
International Classification(s)

- 2014 Application Filing Year
- F25B Class
- 1044 Applications Filed
- 850 Patents Issued To-Date
- 81.42 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Dadd, Michael William | Oxford, Oxfordshire, GB | 9 | 156 |
# of filed Patents : 9 Total Citations : 156 |
Cited Art Landscape
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Patent Citation Ranking
- 0 Citation Count
- F25B Class
- 0 % this patent is cited more than
- 9 Age
Forward Cite Landscape
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 12, 2027 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

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