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US 5,445,119 AGranted
Tappet and shim assembly for internal combustion engine
AssigneeChrysler Corporation
InventorJose F. Regueiro
Life of this patent
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AssigneeChrysler Corporation
InventorJose F. Regueiro
Estimating the term…
A tappet and shim assembly is disclosed for operating directly between a valve and a camshaft lobe in an internal combustion engine. The assembly comprises a tappet having a shallow cylindrical recess in one end that is concentric with an outer cylindrical surface of the tappet. A dual-diameter cylindrical shim is provided with concentric small and large diameter cylindrical portions wherein the large cylindrical portion has a diameter that is sufficiently large so that a flat end surface thereof contacts with a lobe of a camshaft without the lobe contacting the edge of this surface. The small diameter portion of the shim is received in the recess of the tappet and the diameter of the outer cylindrical surface of the latter is made just slightly larger than that of the large diameter portion of the shim so that the latter is received with clearance in the bore in which the tappet is received. The small diameter portion of the shim is provided with an axial dimension such that when it is bottomed out in the recess in the tappet, the large diameter portion of the shim is located at a distance from the tappet to form an annular space therebetween for insertion of a sharp tipped tool to remove the shim from the tappet.
A tappet and shim assembly for operating between a valve and a camshaft in an internal combustion engine, said assembly comprising a tappet having a cylindrical recess in one end thereof concentric with an outer cylindrical surface of said tappet, and a dual-diameter cylindrical shim having concentric small and large diameter cylindrical portions, said large diameter cylindrical portion having a circular end face adapted to contact with a cam lobe of a camshaft, said small diameter portion received in and bottoming out in said recess and having an axial dimension larger than the depth of said recess so as to space said large diameter cylindrical portion at a distance from said one end to form a space therebetween for insertion of a tool to remove said shim from said tappet.
A tappet and shim assembly for operating between a valve and a camshaft in an internal combustion engine, said assembly comprising a tappet having an outer cylindrical surface adapted to be received in a tappet bore, a cylindrical recess in one end of said tappet concentric with said outer cylindrical surface, and a dual-diameter cylindrical shim having concentric small and large diameter cylindrical portions, said small diameter cylindrical portion received in said recess, said large diameter portion extending from said one end of said tappet and having a diameter slightly smaller than that of said outer cylindrical surface of said tappet, said large diameter cylindrical portion having a circular flat end face adapted to contact with a cam lobe of a camshaft, said small diameter portion bottoms out in said recess and has an axial dimension so as to space said large diameter cylindrical portion at a distance from said one end of maid tappet to form an annular space therebetween for insertion of a tool to remove said shim from said tappet.
Dependencies are inferred from the claim text.