Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece
Patent
1975-03-28
1976-08-31
Hoag, Willard E.
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
264161, 264219, 264304, 264305, 264308, 264310, 264318, 264334, 427230, 427385, B29C 1300, B29C 2500, B29D 2300, B29H 304
Patent
active
039781879
ABSTRACT:
Annular 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, dryng 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.
REFERENCES:
patent: 1193883 (1916-08-01), Emery
patent: 1951402 (1934-03-01), Gammeter
patent: 2015632 (1935-09-01), Spanel
patent: 2100571 (1937-11-01), Spanel
patent: 2337116 (1943-12-01), Limbert et al.
patent: 2968575 (1961-01-01), Mallonee
Broyles Howard F.
Cuddihy Edward F.
Fletcher James C. Administrator of the National Aeronautics and Space
Moacanin Jovan
Grifka Wilfred
Hoag Willard E.
Manning John R.
Mott Monte F.
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