Control flap for controlled exhaust gas recirculation and method for its production

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11713736
APP PUB NO 20210310449A1
SERIAL NO

17219793

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Importance

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Abstract

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A control flap (1) has a flap body (2) and a circumferential seal (3) capable of sealing upon abutting to a sealing surface (7) of an opening (8). The flap body (2) and the seal (3) are made of elastomers. The seal (3) is joined to the flap body (2) by a pressure plate (4) made of a thermoplastic. The control flap may be made by a method that includes: producing the flap body (2) from a thermoplastic by injection molding; producing the pressure plate (4) from a thermoplastic by injection molding; producing the seal (3) from an elastomer by injection molding; introducing the pressure plate (4) into the undercut (10) of the seal (3); inserting the pressure plate (4) with the seal (3) into the recess (16) of the flap body (2) and bonding the pressure plate (4) and flap body (2).

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Patent Owner(s)

Patent OwnerAddress
UMFOTEC GMBHSPECKWEG 2 NORTHEIM 37154

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Buck, Ralf Kipfenberg/Schelldorf, DE 10 25
Kaiser, Thomas Staufenberg, DE 94 1110
Nagel, Dirk Dassel, DE 11 23
Waterstraat, Bodo Nussloch, DE 1 0
Wedekind, Gerald Goettingen, DE 2 0

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