Composite drain plug

Details Composite drain plug Composite drain plug

2006-07-18

2008-09-23

Saether, Flemming (Department: 3677)

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Externally threaded fastener element, e.g., bolt, screw, etc.

Multipart

C411S371100, C411S901000, C411S903000

Reexamination Certificate

active

07427181

ABSTRACT:
A composite drain plug for an automobile engine. The drain plug is made up of a hollow metal sleeve that is flanged at one end and closed at the other end. There is a core portion filling the hollow sleeve and having a head portion and a stub flange adjacent the flanged end of the sleeve. A circumferential sealing bead is bonded to the stub flange. The core portion is a glass-filled polymer and the sealing bead is made from a material which includes a cross-linked elastomer dispersed in a thermoplastic carrier.

REFERENCES:
patent: 3869391 (1975-03-01), Kramer
patent: 4810148 (1989-03-01), Aisa et al.
patent: 5420557 (1995-05-01), Chern
patent: 5588502 (1996-12-01), Bedi et al.
patent: 6802680 (2004-10-01), Rubenstein
patent: 62060910 (1987-03-01), None

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