Regenerative refrigerator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 19, 2017
Issued Date -
N/A
app pub date -
Mar 4, 2015
filing date -
Mar 5, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A regenerative refrigerator of a single stage type or a multistage type includes: a cylinder having a cooling stage and a cylinder side wall axially extending from the cooling stage; a displacer having a regenerator provided at the same stage as the cooling stage and a displacer side wall axially extending to face the cylinder side wall, and axially movably disposed in the cylinder; and a low temperature-side gas flow path making a gas expansion space between the displacer and the cooling stage communicate with a low-temperature end of the regenerator and having a gas flow gap between the displacer side wall and the cylinder side wall, and a displacer gas passage making the gas flow gap communicate with the low-temperature end of the regenerator and having a gap-side opening provided further toward a high temperature side than the low-temperature end of the regenerator.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2015 Application Filing Year
- F25B Class
- 1157 Applications Filed
- 883 Patents Issued To-Date
- 76.32 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F25B Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Mar 19, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 19, 2029 |
