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Title: Adjustable expandable cryogenic piston and ring

Abstract

The operation of a reciprocating expansion engine for cryogenic refrigeration is improved by changing the pistons and rings so that the piston can be operated from outside the engine to vary the groove in which the piston ring is located. This causes the ring, which is of a flexible material, to be squeezed so that its contact with the wall is subject to external control. This control may be made manually or it may be made automatically in response to instruments that sense the amount of blow-by of the cryogenic fluid and adjust for an optimum blow-by.

Inventors:
 [1];  [2]
  1. (Aurora, IL)
  2. (Woodridge, IL)
Issue Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
OSTI Identifier:
863674
Patent Number(s):
4226169
Assignee:
United States of America as represented by United States (Washington, DC) FNAL
DOE Contract Number:  
EY-76-C-02-3000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
adjustable; expandable; cryogenic; piston; operation; reciprocating; expansion; engine; refrigeration; improved; changing; pistons; rings; operated; outside; vary; groove; located; causes; flexible; material; squeezed; contact; wall; subject; external; control; manually; automatically; response; instruments; sense; amount; blow-by; fluid; adjust; optimum; cryogenic fluid; external control; expansion engine; flexible material; cryogenic refrigeration; /92/

Citation Formats

Mazur, Peter O., and Pallaver, Carl B. Adjustable expandable cryogenic piston and ring. United States: N. p., 1980. Web.
Mazur, Peter O., & Pallaver, Carl B. Adjustable expandable cryogenic piston and ring. United States.
Mazur, Peter O., and Pallaver, Carl B. Tue . "Adjustable expandable cryogenic piston and ring". United States. https://www.osti.gov/servlets/purl/863674.
@article{osti_863674,
title = {Adjustable expandable cryogenic piston and ring},
author = {Mazur, Peter O. and Pallaver, Carl B.},
abstractNote = {The operation of a reciprocating expansion engine for cryogenic refrigeration is improved by changing the pistons and rings so that the piston can be operated from outside the engine to vary the groove in which the piston ring is located. This causes the ring, which is of a flexible material, to be squeezed so that its contact with the wall is subject to external control. This control may be made manually or it may be made automatically in response to instruments that sense the amount of blow-by of the cryogenic fluid and adjust for an optimum blow-by.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

Patent:

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