PULSE TUBE COOLER

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20160131399A1
SERIAL NO

14895709

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
OXFORD UNIVERSITY INNOVATION LIMITEDUNIVERSITY OFFICES WELLINGTON SQUARE OXFORD OX1 2JD

International Classification(s)

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  • 2014 Application Filing Year
  • F25B Class
  • 1044 Applications Filed
  • 850 Patents Issued To-Date
  • 81.42 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2014201520162017201820192020202120220255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dadd, Michael William Oxford, Oxfordshire, GB 9 156

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  • F25B Class
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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges120434451922401 - 1011 - 2021 - 3031 - 4041 - 5051 - 600255075100125150175200225250275300325350375400425450475

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