Process and device for temporarily holding and releasing objects
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United States of America Patent
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Jan 20, 1987
Grant Date -
N/A
app pub date -
Mar 19, 1985
filing date -
Mar 19, 1985
priority date (Note) -
Expired
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Abstract
A process and device utilizing the memory characteristics of cross-linked polymers for temporarily holding and releasing parts or components is presented. In a first step, a polymeric material or part capable of being cross-linked is formed into a first 'memory' shape. Thereafter, in a next step, the polymer is cross-linked via irradiation or any other suitable technique to fix or lock the polymer into the first memory shape. Next, the polymer is heated and deformed to a second shape and thereafter cooled to lock in that second shape. During the deformation process, the cross-linked polymer will preferably be deformed about a second component or part so that upon cooling, the second part will be tightly held by the deformed polymer. Thus, the second part or component will be temporarily held for any desired length of time. When it is desired to release the second part, the deformed cross-linked polymer part is subjected to a second heating (above its transition temperature) whereupon the polymer will revert back to its first memory shape and thereby release the second part or component held therein. In an alternative embodiment of the present invention, the cross-linked deformed polymeric material may be itself held; the deformed cross-linked material releasing itself from the holder upon reheating (above its transition temperature).
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Patent Owner(s)
Patent Owner | Address | |
---|---|---|
MONSANTO COMPANY | 800 N LINDBERGH BOULEVARD ST LOUIS MO 63167 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Walker, George E | Longmeadow, MA | 4 | 75 |
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Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
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 |
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