Produits et services

Screws of metal. Screwdrivers, non-electric.

Produits et services

Screws of metal. Screwdrivers and bits.

Abrégé

A drive system including a bit with a bit end configured to provide targeted frictional engagement with a fastener. The bit end has an outer leading wall tapered with respect to the bit end longitudinal axis at a leading wall angle selected from leading wall angle values ranging within a leading wall angle tolerance band and the fastener has an inner recess wall tapered with respect to the fastener longitudinal axis at a recess wall angle selected from recess wall angle values ranging within a recess wall angle tolerance band, wherein the leading wall angle values within the leading wall angle tolerance band and the recess wall angles values within the recess wall angle tolerance band do not overlap when the outer leading wall contacts the inner pilot recess wall at a targeted focal area to achieve a desired level of frictional engagement between the pilot end and the fastener.

Classes IPC  ?

• B25B 23/10 - Dispositions pour manipuler les vis ou écrous pour tenir ou présenter la vis ou l'écrou avant ou pendant sa rotation par des moyens mécaniques de prise
• B25B 15/00 - Tournevis
• F16B 23/00 - Têtes de boulons ou de vis de forme spéciale pour permettre leur rotation à l'aide d'un outil
• B25B 23/00 - Parties constitutives ou accessoires des clés à écrous, clés anglaises, tournevis

Produits et services

Screws of metal Hand tools, namely, screwdrivers; bits for hand-powered screwdrivers and hand drills

Abrégé

The invention provides a screw in which the screw head (1) has a slot (2) in the upper surface of the screw head, an upper peripheral wall (9) of regular planform extending down from the rim of the slot into the screwhead, the upper peripheral wall (9) being generally aligned with the axis of the screw to form a recess (3), a sloping transition surface (15), extending downwardly and inwardly with respect to the lower edge of the upper peripheral wall (9), and a further recess (11) extending downwardly from the lower edge of the sloping transition surface (15), in which the dimensions of the screw head are such that when the screwhead is engaged by a tool (6) having upper (16) and lower (17) engagement sections, and in which the upper engagement section (16) extends downwardly with respect to the axis of the screw to which the tool is to engage and the lower engagement section (17) extends further downwardly, and in which there is at least one protrusion (or rib) (21) on the inside wall (12) of the further recess (11), so that there is a ‘stick fit’ between the protrusion (21) on the inside wall (12) of the further recess (11) and the lower engagement section (17) of the tool (6).

Classes IPC  ?

• F16B 23/00 - Têtes de boulons ou de vis de forme spéciale pour permettre leur rotation à l'aide d'un outil
• B25B 15/00 - Tournevis
• B25B 23/10 - Dispositions pour manipuler les vis ou écrous pour tenir ou présenter la vis ou l'écrou avant ou pendant sa rotation par des moyens mécaniques de prise
• B21K 1/46 - Fabrication d'éléments de machines de boulons, goujons ou éléments similaires à têtes

Abrégé

The invention provides a screw in which the screw head (1) has a slot (2) in the upper surface of the screw head, an upper peripheral wall (9) of regular planform extending down from the rim of the slot into the screwhead, the upper peripheral wall (9) being generally aligned with the axis of the screw to form a recess (3), a sloping transition surface (15), extending downwardly and inwardly with respect to the lower edge of the upper peripheral wall (9), and a further recess (11) extending downwardly from the lower edge of the sloping transition surface (15), in which the dimensions of the screw head are such that when the screwhead is engaged by a tool (6) having upper (16) and lower (17) engagement sections, and in which the upper engagement section (16) extends downwardly with respect to the axis of the screw to which the tool is to engage and the lower engagement section (17) extends further downwardly, and in which there is at least one protrusion (or rib) (21) on the inside wall (12) of the further recess (1 1), so that there is a 'stick fit' between the protrusion (21) on the inside wall (12) of the further recess (1 1) and the lower engagement section (17) of the tool (6).

Classes IPC  ?

• F16B 23/00 - Têtes de boulons ou de vis de forme spéciale pour permettre leur rotation à l'aide d'un outil
• B21K 1/46 - Fabrication d'éléments de machines de boulons, goujons ou éléments similaires à têtes
• B25B 15/00 - Tournevis

Abrégé

A screw, tool and a system for driving a screw, comprising a screw and a corresponding tool, wherein the screw includes a screw head comprising a slot in the upper surface of the screw head, a tapered recess disposed downwardly of the slot in the screw, and wherein the tool comprises an upper engagement section which fits within the slot, and further being characterized by a lower engagement section shaped to extend into the tapered recess with a contact surface (30) of an external surface of the lower engagement section in an interference fit with the tapered recess when the upper engagement section is disposed within the slot, the contact surface having a shape which substantially matches any of a plurality of angular inclinations the surface of the tapered recess may have at the interference fit.

Classes IPC  ?

• B25B 15/00 - Tournevis
• F16B 23/00 - Têtes de boulons ou de vis de forme spéciale pour permettre leur rotation à l'aide d'un outil

Abrégé

Disclosed is a screw head having a slot (2) in the upper surface of the screw head, an upper peripheral wall (9) of hexalobular planform extending down into the screw head, the upper peripheral wall (9) being parallel or near parallel to the axis of the screw, a sloping transition surface (15) extending downwardly and inwardly with respect to the lower edge of the upper peripheral wall (9), and a tapered recess (11) extending downwardly from the lower edge of the sloping transition surface (15), in which the dimensions of the screw head are such that when the screw head is engaged by a tool (6) having upper (16) and lower engagement (17) sections, there is a ‘stick fit’ between the surface of the tapered recess (11) and the external surface of the lower engagement section (17), and there is no engagement with the sloping transition surface (15).

Classes IPC  ?

• B25B 23/00 - Parties constitutives ou accessoires des clés à écrous, clés anglaises, tournevis
• B25B 15/00 - Tournevis
• B25B 13/48 - Clés à écrousClés anglaises pour des applications particulières
• B25B 13/06 - Clés à écrousClés anglaises à mâchoires rigides du type à douille

Abrégé

A system for driving a screw, comprising a screw and a corresponding tool, the screw head having a hexalobular slot (2) in the upper surface of the screw head, an upper peripheral wall (9) of hexalobular planform extending down into the screw head, the upper peripheral wall (9) being parallel or near parallel to the axis of the screw, a sloping transition surface (15) extending downwardly and inwardly with respect to the lower edge of the upper peripheral wall (9), and a tapered recess (11) extending downwardly from the lower edge of the sloping transition surface (15), in which the dimensions of the screw head are such that when the screw head is engaged by a tool (6) having upper (16) and lower (17) engagement sections, and in which the upper engagement section (16) is tapered downwardly at an angle with respect to the axis of the screw to which the tool is to engage and the lower engagement section (17) is tapered downwardly, so that there is a 'stick fit' between the surface of the tapered recess (11) and the external surface of the lower tapered engagement section (17), and there is no engagement with the sloping transition surface (15).

Classes IPC  ?

• F16B 23/00 - Têtes de boulons ou de vis de forme spéciale pour permettre leur rotation à l'aide d'un outil
• B25B 15/00 - Tournevis
• B21K 1/46 - Fabrication d'éléments de machines de boulons, goujons ou éléments similaires à têtes

Produits et services

(1) Screws of metal; hand drills for fastening and unfastening screws; hand tools, namely screwdrivers and bits.

Produits et services

Screws of metal. Screw machines. Screwdrivers and bits.

Produits et services

Screws of metal [ Screw fastening and unfastening machines ] Hand tools, namely, [ screwdrivers and ] bits

Abrégé

A system for driving a screw, comprising a screw and a corresponding tool, the screw head having a hexalobular slot (2) in the upper surface of the screw head, an upper peripheral wall (9) of hexalobular planform extending down into the screw head, the upper peripheral wall (9) being parallel or near parallel to the axis of the screw, a sloping transition surface (15) extending downwardly and inwardly with respect to the lower edge of the upper peripheral wall (9), and a tapered recess (11) extending downwardly from the lower edge of the sloping transition surface (15), in which the dimensions of the screw head are such that when the screw head is engaged by a tool (6) having upper (16) and lower (17) engagement sections, and in which the upper engagement section (16) is tapered downwardly at an angle with respect to the axis of the screw to which the tool is to engage and the lower engagement section (17) is tapered downwardly, so that there is a 'stick fit' between the surface of the tapered recess (11) and the external surface of the lower tapered engagement section (17), and there is no engagement with the sloping transition surface (15).

Classes IPC  ?

• B21K 1/46 - Fabrication d'éléments de machines de boulons, goujons ou éléments similaires à têtes
• B25B 15/00 - Tournevis
• F16B 23/00 - Têtes de boulons ou de vis de forme spéciale pour permettre leur rotation à l'aide d'un outil

Abrégé

A screw, tool and a system for driving a screw, comprising a screw and a corresponding tool, wherein the screw includes a screw head comprising a slot in the upper surface of the screw head, a tapered recess disposed downwardly of the slot in the screw, and wherein the tool comprises an upper engagement section which fits within the slot, and further being characterized by a lower engagement section shaped to extend into the tapered recess with a contact surface (30) of an external surface of the lower engagement section in an interference fit with the tapered recess when the upper engagement section is disposed within the slot, the contact surface having a shape which substantially matches any of a plurality of angular inclinations the surface of the tapered recess may have at the interference fit.

Classes IPC  ?

• B25B 15/00 - Tournevis
• F16B 23/00 - Têtes de boulons ou de vis de forme spéciale pour permettre leur rotation à l'aide d'un outil