Produits et services

Metal hardware, namely, pulleys; metal hardware, namely, springs; metal valves not being parts of machines; metal hardware, namely, nuts of metal, bolts of metal, screws of metal, nails of metal, wedges of metal, pegs of metal, washers of metal, tacks of metal, plugs of metal and rivets of metal

Produits et services

Metal hardware; screws of metal; nails; nuts of metal; bolts of metal; metal materials for building or construction; pulleys of metal, not machine elements; springs of metal, not machine elements; valves of metal, not machine elements; metal junctions for pipes; metal flanges.

Produits et services

Metal hardware; screws of metal; nails; nuts of metal; bolts of metal; metal materials for building or construction; pulleys of metal, not machine elements; springs of metal, not machine elements; valves of metal, not machine elements; metal junctions for pipes; metal flanges.

Produits et services

Metal hardware, namely, screws, nails, nuts, bolts, wedges, pegs, washers, tacks, plugs and rivets; pulleys of metal, not machine elements; springs of metal, not machine elements; valves of metal, not machine elements; metal junctions for pipes; metal flanges

Produits et services

Metal hardware, namely, screws, nails, nuts, bolts, wedges, pegs, washers, tacks, plugs and rivets; pulleys of metal, not machine elements; springs of metal, not machine elements; valves of metal, not machine elements; metal junctions for pipes; metal flanges

Abrégé

To provide a fastener having a high anti-loosening effect. A fastener has a thread structure including an upper portion of the crest and a bottom portion at the groove. The upper portion has a load flank surface inclined from the standard load flank surface toward the fastener seat while the bottom has an undercut on at least one of the groove side lower than the extension of the corresponding flank surface.

Classes IPC  ?

• F16B 39/30 - Blocage uniquement par tracé spécial du filetage

Abrégé

A fastening member that exerts a high loosening-inhibition effect is provided. A fastening member 1 has an upper portion 11 on a thread top portion side and a lower portion 12 on a thread root side in at least a part of a thread 10. The upper portion 11 and the lower portion 12 have following constructions. A pressure-side flank surface 13 and a play-side flank surface 14 are formed on the upper portion 11. A pressure-side side surface 15 and a play-side side surface 16 are formed on the lower portion 12. The pressure-side side surface 15 is formed to be continuous from a lower end of the pressure-side flank surface 13. In a cross-section including an axial line of the fastening member 1, a shape of the pressure-side side surface 15 is a curve line shape that curves inward from an extended line of the pressure-side flank surface 13 or a shape provided by combining a straight line shape positioned inside the extended line of the pressure-side flank surface 13 and a curve line shape that curves inward from the extended line.

Classes IPC  ?

• F16B 33/00 - Caractéristiques communes aux boulons et aux écrous
• F16B 33/02 - Tracé du filetageProfils de filetage particuliers
• F16B 39/28 - Blocage des vis, boulons ou écrous dans lequel le verrouillage se fait en même temps que le vissage ou le serrage par organes particuliers portés par l'écrou ou le boulon ou par la forme particulière de ceux-ci
• B23P 11/00 - Assemblage ou désassemblage de pièces ou d'objets métalliques par des processus du travail du métal non prévus ailleurs

Abrégé

Provided is a fastening member which produces high locking effectiveness. A fastening member (1) is provided with threads having an upper portion (11) on the thread tip side and a lower portion (12) on the thread bottom side in at least a part of threads (10), said upper portion and said lower portion having the following structure. A pressure-side flank surface (13) and a looseness-side flank surface (14) are formed in the upper portion (11), and a pressure-side side surface (15) and a looseness-side side surface (16) are formed in the lower portion (12). The pressure-side side surface (15) continuously extends from the lower end of the pressure-side flank surface (13). The pressure-side side surface (15) continuously extends from the lower end of the pressure-side side surface in a section including the axis of the fastening member (1). The shape of the pressure-side side surface (15) is a curved shape formed along a curved line formed by inwardly bending an extended line of the pressure-side flank surface (13), or a shape obtained by combining a straight line shape formed along a straight line disposed on the inside of the extended line of the pressure-side flank surface (13) with a curved line shape formed along a curved line formed by inwardly bending the extended line.

Classes IPC  ?

• F16B 33/02 - Tracé du filetageProfils de filetage particuliers
• F16B 39/30 - Blocage uniquement par tracé spécial du filetage

Abrégé

To provide a fastener having a high anti-loosening effect. A fastener has a thread structure including an upper portion of the crest and a bottom portion at the groove. The upper portion has a load flank surface inclined from the standard load flank surface toward the fastener seat while the bottom has an undercut on at least one of the groove side lower than the extension of the corresponding flank surface.

Classes IPC  ?

• F16B 33/00 - Caractéristiques communes aux boulons et aux écrous
• F16B 39/30 - Blocage uniquement par tracé spécial du filetage

Produits et services

Metal pulleys, springs and valves (not including machine elements); metal hardware; nuts (of metal); bolts (of metal); screws of metal. Curtain fittings; metal-substitute plastic fasteners; nails, wedges, nuts, screws, tacks, bolts, rivets and casters (not of metal); washers (not of metal, not of rubber or vulcanized fiber); locks (non-electric, not of metal); nuts of plastic; bolts of plastic; screws of plastic; valves of plastic (not including machine elements).

Abrégé

[Object] To provide a fastener having a high anti-loosening effect. [Means to achieve the object] A fastener has a thread structure including an upper portion of the crest and a bottom portion at the groove. The upper portion has a load flank surface inclined from the standard load flank surface toward the fastener seat while the bottom has an undercut on at least one of the groove side lower than the extension of the corresponding flank surface.

Classes IPC  ?

• F16B 39/30 - Blocage uniquement par tracé spécial du filetage
• F16B 33/02 - Tracé du filetageProfils de filetage particuliers