Punch and manufacturing method for recessed head fastener

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6786827
APP PUB NO 20040033838A1
SERIAL NO

10437096

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Recessed head fasteners are provided with a configuration by which the force applied by the blades of the driver to the recessed wings is applied at the radially outer regions of the wings. The wings of the fastener recess may be provided with torque pads at the outer regions of the wings adapted to engage the outer portions of the driver blades. The torque pads may be defined by relieved regions on the drive walls of the recess wings. The relieved regions are formed to avoid contact with the driver blades. Stabilizing ribs also may be defined at the radially inward regions of the drive walls. A recess engageable driver may include a plurality of radially extending ribs configured to promote engagement of the ribs with the most radially outward regions of the recess drive walls. The driver and the recess are compatible with each other as well as with otherwise corresponding conventional recesses and drivers that do not incorporate the invention. Also disclosed are punches and methods for making the disclosed fasteners.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
PHILLIPS SCREW COMPANYONE VAN DE GRAAFF DRIVE SUITE 404 BURLINGTON MA 01803

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hughes, Barry J Gloucester, MA 17 142
Mowins, Michael L Gloucester, MA 5 42

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