Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Coating or impregnating workpiece before molding or shaping...
Patent
1983-12-23
1986-03-11
Derrington, James
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
Coating or impregnating workpiece before molding or shaping...
264269, 264305, B29C 1304
Patent
active
045754420
ABSTRACT:
A heart valve is to remain with a homogenic and smooth configuration whereby particularly unevennesses tending to form loci for depositions are to be avoided. The method is basically comprised of separately forming the flap vanes through multiple coatings and the valve case is separately made but combined with the flap vane through a common coating procedure to obtain smooth transition surfaces.
REFERENCES:
patent: 2690595 (1954-10-01), Raiche
patent: 3879516 (1975-04-01), Wolvek
Buecherl Emil S.
Hennig Ewald
Zartnack Friedrich
Derrington James
Hennig Ewald
Siegemund Ralf H.
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