Invention Grant
- Patent Title: Cylinder head gasket with a gasket plate having several sheet-metal layers
- Patent Title (中): 气缸盖垫圈,垫圈板有几个金属板层
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Application No.: US136487Application Date: 1998-08-19
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Publication No.: US6053503APublication Date: 2000-04-25
- Inventor: Reinhold Buck , Fritz Bleyh
- Applicant: Reinhold Buck , Fritz Bleyh
- Applicant Address: DEX Dettingen
- Assignee: Elring Klinger GmbH
- Current Assignee: Elring Klinger GmbH
- Current Assignee Address: DEX Dettingen
- Priority: DEX19606382 19960221
- Main IPC: F16J15/08
- IPC: F16J15/08 ; F02F11/00
Abstract:
Cylinder head gasket with a gasket plate having several sheet-metal layers and at least one combustion chamber aperture, wherein a first outer sheet-metal layer is provided with an annular bead which surrounds the combustion chamber aperture, projects in the direction towards an adjacent, second sheet-metal layer and abuts against the latter, and wherein to limit the deformation of the bead a metal spacer ring is attached by welding to one of the two layers radially adjacent to the bead, the spacer ring facing the other layer and surrounding the combustion chamber aperture; in order to make a simple optical examination of the quality of the welding join possible, the spacer ring is attached in a gas-tight manner to the layer supporting it by a continuous, annular laser welding seam closed upon itself and uniform except for an area of overlap, wherein the seam is doubled in the area of overlap.
Public/Granted literature
- US4868671A Method of and apparatus for noise reduction in multi-gradation image signal in halftone image reader Public/Granted day:1989-09-19
Information query
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