Senco Brands, Inc.

Senco Products, Inc.

Kyocera Senco Industrial Tools, Inc.

Duraspin Products LLC

William H Hoffman

Michael R Desmond

Thomas A McCardle

Christopher D Klein

Thomas Matthew Webster

Anthony D Kabbes

Donald J Massari, Jr

Steven Roy Streicher

Thomas A Mccardle

A gas spring fastener driving tool, having a cylinder filled with compressed gas that forces a piston/driver through a driving stroke movement; a rotary-to-linear lifter, then moves the piston/driver back to its ready position, preparing the tool for another driving stroke. The driver has protrusions (teeth) along its edges to contact extending pins of the lifter member, for lifting the driver during a return stroke. The driver's movements are detected by position sensors, and the information provided by those position sensors is used to prevent the lifter from impacting against the driver in situations where the driver did not finish its driving stroke in a correct ('in specification') position. The use of two position sensors allows a Dry Fire diagnostic test to determine if gas pressure in the gas storage chamber is too high, or has become too low.

Fastener driving tool with driver position sensors

An automatic fastener driving tool, or an attachment, has a narrow front-end profile so that it is capable of driving screws that are in hard-to-reach positions, such as corners or channel members. The slide body subassembly has an extending mechanism, so that the fastener drive elements extend farther away from the main body structure of the tool/attachment, while still providing a stable and rugged overall tool structure to drive larger screws. The 'lick-out' dimension is increased without also increasing the length and width of the feed tube.

Screwdriver tool with improved corner fit function

An automatic fastener driving tool, or an attachment, has an external depth of drive adjustment subassembly that is mounted external to the feed tube housing, yet has a simple adjustment that does not lose its setpoint easily. By placing the depth of drive mechanism outside of the interior areas of the feed tube, the slide body subassembly can be lengthened without increasing the overall length of the feed system. Certain surfaces of slide body subassembly exhibit a dovetail shape, which allows the slide body subassembly to be robustly mounted so that it is capable of operating with long fasteners while also having the nosepiece mounted in an extended position for use with those fasteners.

Screwdriver tool with improved linear tracking

An attachment is mated to a power screwdriver by use of an adapter that is first fixed onto the screwdriver. The attachment includes an automatic fastener driver that receives a collated strip of fasteners, and drives them into a working surface. The attachment is mated to the adapter; the attachment contains a radial type of mechanical coupling that can be rotated without dismounting the attachment from the power screwdriver. In this manner, the angular orientation between the attachment and the power screwdriver can be changed 'on the fly' by the user. This combination allows the user to keep his or her hands at their operating positions throughout this procedure, thereby allowing the user to re-commence using the combination tool quickly after readjusting the operating angle.

Detented adapter interface for screwdriver tool attachment

An attachment for a portable hand-held screw driving tool is provided for use with collated strips of screws. The front portion of the attachment is movable to a great extent, to thereby allow the tool to drive screws almost directly at the corner of two walls. A front 'nose piece' is pressed against one of the walls, which causes the nose piece to move rearward 'into' the remainder of the tool, in a &#x201c;first stage&#x201d; of movement. A screw is indexed to its drive position, and a drive bit is abutted against the screw head during this first stage. The nose piece is pressed further into the tool, which also causes a &#x201c;feed tube&#x201d; to move rearward &#x201c;into&#x201d; the remainder of the tool, in a &#x201c;second stage&#x201d; of movement, which rotates the screw as it is emplaced into the wall.

Attachment with collapsible front end for portable screw driving tool

A portable hand-held screw driving tool is provided for use with collated strips of screws. The front portion of the tool is movable to a great extent, to thereby allow the tool to drive screws almost directly at the corner of two walls. A front 'nose piece' is pressed against one of the walls, which causes the nose piece to move rearward 'into' the remainder of the tool, in a &#x201c;first stage&#x201d; of movement. A screw is indexed to its drive position, and a drive bit is abutted against the screw head during this first stage. The nose piece is pressed further into the tool, which also causes a &#x201c;feed tube&#x201d; to move rearward &#x201c;into&#x201d; the remainder of the tool, in a &#x201c;second stage&#x201d; of movement, which rotates the screw as it is emplaced into the wall.

Portable screw driving tool with collapsible front end

A portable hand-held screw driving tool is provided for use with collated strips of screws. A collated strip of screws enters from an upper-rear area of the tool and runs through a pathway or slot in an elongated, movable upper guide mounted at the tool's upper housing, then to a movable slide body having that receives and indexes the collated strip so a screw can be driven by the tool. The upper guide provides containment that prevents the flexible collated strip becoming substantially misaligned while moving through the guide's slot. When the tool is actuated to drive a screw into an object, the sliding guide moves longitudinally along the top of the tool, along with the tool's front-end screw-driving mechanism. Thus the flexible collated strip is always in a relatively fixed orientation as compared to the movable front end portion of the tool.

Sliding rail containment device for flexible collated screws used with a top feed screw driving tool

A portable hand-held screw driving tool is provided for use with collated strips of screws. A collated strip of screws enters from the 'bottom' area of the tool and runs through a fixed guide along a front area of the tool's handle, and then to a movable slide body having a rotatable sprocket that receives the collated strip, and indexes the strip so a screw can be driven by the tool. Between the slide body and the fixed guide is a flexible strap with a bracket that places tension on the collated screw strip, which prevents the flexible collated strip from becoming substantially misaligned (e.g., bunching, sagging, or becoming tangled) in the area between the fixed guide and the slide body. The collated strip is kept sufficiently taut, regardless of the orientation of the screw driving tool with respect to the ground.

Growing community of inventors

Cincinnati, OH, United States of America

William H Hoffman