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US 5,497,693 AGranted
Replacement cylinder for cast iron block engine remanufacture
AssigneePatent Master, Inc.
InventorMichael S. Ward
Life of this patent
Estimating the term…
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AssigneePatent Master, Inc.
InventorMichael S. Ward
Estimating the term…
A replacement cylinder for the remanufacture of cast iron engine blocks includes a sleeve formed of cast iron and having a relatively thin wall, a selected length, an outer diameter to achieve a slight clearance of fit within an overbored cylinder, an inner diameter equal to the original specifications of the original manufacturer of the engine block, and a helical cross hatched inner surface finish. The replacement cylinders are manufactured by placing an unfinished sleeve in a boring fixture, boring the inner surface to a selected diameter, transferring the bored sleeve to a honing fixture, and honing the inner surface to the required diameter and surface finish. An adhesive is applied to the prefinished replacement cylinders and the overbored block cylinders, and the replacement cylinders are inserted into the overbored cylinders wherein the adhesive is allowed to cure to thereby adhesively retain the replacement cylinders within the block.
A prefinished replacement cylinder for cylinder relining of an internal combustion engine block not originally designed for relining and having a bore sized to a selected diameter, said block having been configured by an original manufacturer to receive a piston of a selected OEM standard diameter within said bore prior to resizing, said replacement cylinder comprising:
An engine cylinder block assembly comprising:
A cast iron replacement cylinder for remanufacture of an internal combustion engine block, said engine block including a plurality of bores which have been sized to a selected bore diameter in excess of an OEM cylinder diameter, said OEM cylinder diameter being sized to accept OEM pistons of a predetermined piston diameter and said replacement cylinder comprising:
A remanufactured engine cylinder block assembly comprising:
Dependencies are inferred from the claim text.