Phillips Screw Company

Philips Screw Company, Inc.

Gary E Dilling

Christopher M Gallant

Barry J Hughes

Scott M Filion

Carl Marabello, Jr

Fasteners, drivers, punches, fastener systems, and methods of making fasteners, drivers, punches, and fastener systems are disclosed herein. The fasteners, drivers, punches, and fastener systems include, in one example, stabilizing ribs and corresponding recesses.

Fastener system with stabilizer ribs

Various embodiments described herein provide a fastener system having straight walled driving surfaces that provides a reliable stick fit feature, while also improving stability of engagement between the system components. A feature of the new system is to allow stick fit engagement of existing standard straight walled drivers in the new system.

Stick fit fastener recess system

A debris ejector for a drilling tool is disclosed. The ejector may be provided as part of a tool assembly where the ejector is coupled with bit. In an example, a tool includes a cup and a drill bit passing through an internal void of the cup. The cutting end of the bit extends out the open end of the cup at a fixed distance, while an attachment end of the bit extends out the back of the cup. The tool further includes an ejector within the cup. The ejector spins with the bit and independently of the cup. In one example, the ejector includes ramped or angled wings that eject material within the cup. In another example, the ejector includes tapered wings with straight and/or angled walls that push material out of the cup through one or more holes of the cup.

Debris ejection techniques for drilling tools

A debris ejector for a drilling tool is disclosed. In some cases, the ejector may be provided, for example, as part of a tool assembly (e.g., where ejector is coupled with bit, or both a bit and cup). In an example, a tool includes a cup and a drill bit passing through an internal void of the cup. The cutting end of the bit extends out the open end of the cup, while an attachment end of the bit extends out the back of the cup. The tool further includes an ejector within the cup. The ejector spins with the bit and independently of the cup. In one example, the ejector includes ramped or angled wings that eject material within the cup. In another example, the ejector includes tapered wings with straight and/or angled walls that push material out of the cup through one or more holes of the cup.

Fasteners, drivers, punches, fastener systems, and methods of making fasteners, drivers, punches, and fastener systems are disclosed herein. The fasteners may include a recess having a groove in an inner transition surface. Corresponding drivers may include one or more stabilizing ribs for interfacing with the groove in the fastener recces for providing stability.

Various embodiments described herein provide a fastener system having straight walled driving surfaces that provides a reliable stick fit feature, while also improving stability of engagement between the system components. A feature of the new system is to allow engagement of existing standard straight walled drivers in the new system.

Fastener systems and methods of forming fastener systems with stable engagement and stick fit

A fastener system is constructed wherein the installation and removal drive surfaces intersect an enlarged core diameter in a transitional surface that extends between the installation and removal surfaces of adjacent wings. The transitional surface has a concave form that conforms to the core diameter. The projections of the driver in the system are formed in a blunt shape.

High strength fastener system

Fastener system with stable engagement and stick fit

Interference surfaces are constructed on inner transition surfaces between wings of a fastener having a spiral recess. A portion of the transition surface is tapered to provide the interference. A standard driver for a spiral recess will engage the interference surface to create a 'stick fit' engagement. The punch is formed using a wire EDM operation to construct tapered surfaces within the die cavity of a hob. The hob is machined down to obtain the desired depth, which is measured up from a gage spot indicative of the sticking point.

Fastener with friction engageable surface

Spiral drive fastener with friction engageable surface

The fastener of this application is designed to facilitate the insertion of rotating power driven tools into the fastener recess. The recess of this fastener generally uses spirally configured driving surfaces and is formed in a counterbore in the upper surface of the fastener. The driving lobes have upper surfaces that are depressed a distance into the counterbore. A ramp surface is formed on each of the upper surfaces that causes a spinning bit to fall into the recess in an engaged manner. The ramp surfaces are constructed with both removal and installation ramp portions.

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Ashburnham, MA, United States of America

Gary E Dilling