Goods & Services

Screws of metal. Screwdrivers, non-electric.

Goods & Services

Screws of metal. Screwdrivers and bits.

Abstract

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.

IPC Classes  ?

• B25B 23/10 - Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
• B25B 15/00 - Screwdrivers
• F16B 23/00 - Specially-shaped heads of bolts or screws for rotations by a tool
• B25B 23/00 - Details of, or accessories for, spanners, wrenches, screwdrivers

Goods & Services

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

Abstract

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).

IPC Classes  ?

• F16B 23/00 - Specially-shaped heads of bolts or screws for rotations by a tool
• B25B 15/00 - Screwdrivers
• B25B 23/10 - Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
• B21K 1/46 - Making machine elements bolts, studs, or the like with heads

Abstract

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).

IPC Classes  ?

• F16B 23/00 - Specially-shaped heads of bolts or screws for rotations by a tool
• B21K 1/46 - Making machine elements bolts, studs, or the like with heads
• B25B 15/00 - Screwdrivers

Abstract

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.

IPC Classes  ?

• B25B 15/00 - Screwdrivers
• F16B 23/00 - Specially-shaped heads of bolts or screws for rotations by a tool

Abstract

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).

IPC Classes  ?

• B25B 23/00 - Details of, or accessories for, spanners, wrenches, screwdrivers
• B25B 15/00 - Screwdrivers
• B25B 13/48 - SpannersWrenches for special purposes
• B25B 13/06 - SpannersWrenches with rigid jaws of socket type

Abstract

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).

IPC Classes  ?

• F16B 23/00 - Specially-shaped heads of bolts or screws for rotations by a tool
• B25B 15/00 - Screwdrivers
• B21K 1/46 - Making machine elements bolts, studs, or the like with heads

Goods & Services

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

Goods & Services

Screws of metal. Screw machines. Screwdrivers and bits.

Goods & Services

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