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Multi-rail piston ring
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Patent number 8,403,334
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Issue date Mar 26, 2013
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Mahle Engine Components USA, Inc.
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John C. Lahrman
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Cooling gallery insert for a piston
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Patent number 8,047,123
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Issue date Nov 1, 2011
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Mahle Engine Components USA, Inc.
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John C. Lahrman
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Piston ring
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Patent number 7,997,185
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Issue date Aug 16, 2011
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Mahle Engine Components USA, Inc.
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John C. Lahrman
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Variable tension ring mechanism
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Patent number 7,461,583
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Issue date Dec 9, 2008
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Mahle Engine Components USA, Inc.
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Joseph C. Hamelink
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Piston ring with projection
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Patent number 7,429,048
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Issue date Sep 30, 2008
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Mahle Engine Components USA, Inc.
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Michael E. Carson
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Piston ring assembly
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Patent number 7,429,047
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Issue date Sep 30, 2008
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Mahle Engine Components USA, Inc.
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Daniel Wilkinson
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...