Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation

Child Classifications

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• H01R 4/01 Connections using shape memory materials, e.g. shape memory metal since 2000 IPC+CPC Available in IPC and CPC
• H01R 4/02 Soldered or welded connections since 1980 +7 CPC IPC+CPC Available in IPC and CPC
• H01R 4/04 using electrically conductive adhesives since 1980 IPC+CPC Available in IPC and CPC
• H01R 4/06 Riveted connections (by explosion H01R4/08) since 1980 IPC+CPC Available in IPC and CPC
• H01R 4/08 effected by an explosion since 1980 IPC+CPC Available in IPC and CPC
• H01R 4/10 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation since 1980 IPC+CPC Available in IPC and CPC
• H01R 4/22 End caps, i.e. of insulating or conductive material for covering or maintaining connections between wires entering the cap from the same end since 1980 IPC+CPC Available in IPC and CPC
• H01R 4/24 Connections using contact members penetrating or cutting insulation or cable strands since 1980 IPC+CPC Available in IPC and CPC
• H01R 4/26 Connections in which at least one of the connecting parts has projections which bite into or engage the other connecting part in order to improve the contact (; using shape memory materials H01R4/01) since 1980 IPC+CPC Available in IPC and CPC
• H01R 4/28 Clamped connections, spring connections (made by means of terminals specially adapted for contact with, or insertion into, printed circuits H01R12/00) since 1980 IPC+CPC Available in IPC and CPC
• H01R 4/54 CPC only CPC only
• H01R 4/56 one conductor screwing into another since 1980 IPC+CPC Available in IPC and CPC
• H01R 4/58 characterised by the form or material of the contacting members (H01R4/01 takes precedence) since 1980 IPC+CPC Available in IPC and CPC
• H01R 4/70 Insulation of connections (end caps H01R4/22) since 1980 IPC+CPC Available in IPC and CPC