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1. (WO1998048958) IMPROVED SWAGE FASTENING TOOL

Pub. No.:    WO/1998/048958    International Application No.:    PCT/US1998/008655
Publication Date: Fri Nov 06 00:59:59 CET 1998 International Filing Date: Fri May 01 01:59:59 CEST 1998
IPC: B21J 15/02
B21J 15/22
Applicants: WILCOX, Robert, B.
Inventors: WILCOX, Robert, B.
Title: IMPROVED SWAGE FASTENING TOOL
Abstract:
A swage fastening tool (100) is disclosed, the tool (100) including damper valve (22), concentrically positioned about a piston (12) which displaces the fastener being swaged. The damper valve (22) moves with the piston (12) when the trigger structure (44) of the tool (100) is actuated to supply pressurized fluid to the piston (12), the damper valve (22) being positioned relative to the piston (12) and the flow path of the fluid to meter flow both to the piston (12) during swaging and from the piston (12) after swaging has been completed. The trigger (44) is provided with a camping feature (46) to create a component of a trigger movement to actuate a flow control valve (54) in a simplified manner and a self-restoring resilient arm portion (50) to return the trigger structure (44) to its initial position.