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Method of making hollow elastomeric bodiesAnnular elastomeric bodies having intricate shapes are cast by dipping a heated, rotating mandrel into a solution of the elastomer, permitting the elastomer to creep into sharp recesses, drying the coated mandrel and repeating the operation until the desired thickness has been achieved. A bladder for a heart assist pump in which a cylindrical body terminating in flat, sharp horizontal flanges fabricated by this procedure has been subjected to over 2,500 hours of simulated life conditions with no visible signs of degradation.
Document ID
19760024436
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Broyles, H. F. (JPL)
Moacanin, J. (JPL)
Cuddihy, E. F. (JPL)
Date Acquired
August 8, 2013
Publication Date
August 31, 1976
Subject Category
Mechanical Engineering
Report/Patent Number
Patent Application Number: US-PATENT-APPL-SN-563050
Patent Number: NASA-CASE-NPO-13535-1
Patent Number: US-PATENT-3,978,187
Accession Number
76N31524
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-NPO-13535-1|US-PATENT-3,978,187
Patent Application
US-PATENT-APPL-SN-563050

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