Pistons for engines or motors
AssigneeT&N Technology Limited
InventorsDavid A. Parker, Michael L. P. Rhodes
Life of this patent
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Abstract
The piston comprises a crown (12), and a skirt 30 made of plastics material secured to the crown. The crown (12) is formed integrally with a depending boss (16) arranged to receive a gudgeon pin (18) by which the piston is connected to a connecting rod (24). The skirt (30) encircles the boss (16) and is spaced therefrom.
Claims6
A piston for an engine or motor comprising a first portion made form a material selected from the group comprising metal and ceramic, and a second portion made form plastics material, the first portion comprising a crown of the piston and a depending central boss integral with the crown and arranged to receive a gudgeon pin by which the piston is connected to a connecting rod, the boss providing the sole connection between the piston and the gudgeon pin, wherein the second portion is secured to portions of the crown away from the boss, and wherein the second portion comprises a depending flexible skirt which encircles the boss and is spaced therefrom, the skirt being free to flex in directions towards or away from the boss.
Dependencies are inferred from the claim text.