Fastener driving device with improved control valve assembly...

Details Fastener driving device with improved control valve assembly... Fastener driving device with improved control valve assembly...

B - Operations, Transporting

23

Q

B23Q 5/033 (2006.01) B25C 1/04 (2006.01)

Patent

CA 2190227

A pneumatically operated driving device is constructed and arranged to operate in a single actuation sequence and an automatic actuation sequence. The device includes an improved control valve assembly for communicating reservoir pressure to move a piston in a direction to effect a drive stroke of a fastener driving element and for permitting the piston to move in a direction to effect the return stroke of the fastener driving element. The control valve assembly includes a main valve, a secondary valve, and first and second actuating members for controlling movement of the main and secondary valves, a trigger member for moving the actuating members, and trigger member adjustment structure constructed and arranged to adjust pivotal movement of the trigger member thereby providing operator selection of single actuation followed by automatic actuation of the device, or automatic actuation thereof only. The control valve assembly may be removed from the device as a unit.

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