Senco Brands, Inc.

Kyocera Senco Industrial Tools, Inc.

Michael V Petrocelli

Richard L Leimbach

Thomas A McCardle

Danny L Bolender

Steve Dickinson

Joseph R Knueven

Robert L Lance, Jr

Dan Stoltz

Teresa A Petrocelli, Legal Representative

Shane R Adams

Thomas W Clark

Dan Stolz

A portable linear fastener driving tool is provided that drive staples, nails, or other linearly driven fasteners. The tool uses a gas spring principle, in which a cylinder filled with compressed gas is used to quickly force a piston through a driving stroke movement, while a driver also drives a fastener into a workpiece. The piston/driver is then moved back to its starting position by use of a rotary-to-linear lifter, and the piston again compresses the gas above the piston, thereby preparing the tool for another driving stroke. The driver has protrusions along its edges that contact the lifter, which lifts the driver during a return stroke. A pivotable latch is controlled to move into either an interfering position or a non-interfering position with respect to the driver protrusions, and acts as a safety device, by preventing the driver from making a full driving stroke at an improper time.

Fastener driving tool using a gas spring

Method for controlling a fastener driving tool using a gas spring

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Bethel, OH, United States of America

Michael V Petrocelli