Fastener installation tool
AssigneeAvdel UK Limited
InventorRichard KING
Life of this patent
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Abstract
A fastener installation tool for installing a fastener by gripping and drawing back a stem of the fastener comprises a hydraulic cylinder, and a hydraulic piston assembly located in the hydraulic cylinder for use in drawing back the stem of a fastener. The hydraulic piston assembly comprises an elongate draw part and a separate hollow piston part mounted on the elongate draw part such that the elongate draw part extends at least partly through the hollow piston part. The elongate draw part and the hollow piston part are formed from different materials.
Claims18
A fastener installation tool for installing a fastener by gripping and drawing back a stem of the fastener, comprising a hydraulic cylinder, and a hydraulic piston assembly located in the hydraulic cylinder for use in drawing back the stem of a fastener, the hydraulic piston assembly characterised by comprising an elongate draw part of first tensile strength and a separate hollow piston part of second tensile strength, which hollow piston part is mounted on the elongate draw part such that the elongate draw part extends at least partly therethrough, wherein the elongate draw part and the hollow piston part are formed from different materials and wherein the first tensile strength is lower than the second tensile strength.
Dependencies are inferred from the claim text.