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John M Chesterfield Deceased822 79Th St, Indianapolis, IN 46240

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Known as:
John Morris Chesterfield John N Chesterfield John W Chesterfield
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Natasha Shannon

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822 79Th St, Indianapolis, IN 46240 (317) 255-7882

Glen Arbor, MI

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Us Patents

High-Absorptance High-Emittance Anodic Coating

US Patent:
5820740, Oct 13, 1998
Filed:
Jul 9, 1997
Appl. No.:
8/890171
Inventors:
Huong Giang Le - Fountain Valley CA
John L. Chesterfield - Indianapolis IN
Assignee:
Aluminum Finishing Corporation - Indianapolis IN
McDonnell Douglas Corporation - Huntington Beach CA
International Classification:
C25D 500
C25D 1112
C25D 534
C25D 1106
US Classification:
205171
Abstract:
A colored anodic coating for use on surfaces of substrates, e. g. aluminum substrates in which it is desirable to maintain a high solar absorptance (a) and a high infrared emittance (e), particularly in low earth orbit space environments. This anodic coating is preferably a dark colored coating, and even more preferably a black coating. This coating allows a touch temperature within an acceptable design range to preclude burning of an astronaut in case of contact, but also allows a solar radiation absorption in an amount such that an a/e ratio of unity is achieved. The coating of the invention comprises a first layer in the form of an acid anodized colored anodic layer for achieving a high solar absorptance and a second or high emittance layer in the form of a clear acid anodized layer for achieving a high emittance. The entire coating is quite thin, e. g. 1-2 mils and is quite stable in a hostile space environment of the type encountered in a low earth orbit.

High-Absorptance High-Emittance Anodic Coating

US Patent:
5948542, Sep 7, 1999
Filed:
Mar 18, 1996
Appl. No.:
8/615994
Inventors:
Huong Giang Le - Fountain Valley CA
John L. Chesterfield - Indianapolis IN
Assignee:
McDonnell Douglas Corporation - Huntington Beach CA
Aluminum Finishing Corp. - Indianapolis IN
International Classification:
B32B 1520
US Classification:
4284722
Abstract:
A colored anodic coating for use on surfaces of substrates, e. g. aluminum substrates in which it is desirable to maintain a high solar absorptance (. alpha. ) and a high infrared emittance (. epsilon. ), particularly in low earth orbit space environments. This anodic coating is preferably a dark colored coating, and even more preferably a black coating. This coating allows a touch temperature within an acceptable design range to preclude burning of an astronaut in case of contact, but also allows a solar radiation absorption in an amount such that an. alpha. /. epsilon. ratio of unity is achieved. The coating of the invention comprises a first layer in the form of an acid anodized colored anodic layer for achieving a high solar absorptance and a second or high emittance layer in the form of a clear acid anodized layer for achieving a high emittance. The entire coating is quite thin, e. g. 1-2 mils and is quite stable in a hostile space environment of the type encountered in a low earth orbit.

Possible Relatives

John J Last  John J Stan  John C Stanaway  John B Stanbro  John J Stanchak  John K Stanchfield  John R Stancil  John B Standefer  John A Stander  John C Standish 

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