Tubular elements of cross-section which is non-circular (F28F1/08, F28F1/10 take precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Tubular elements of cross-section which is non-circular

CPC: Tubular elements of cross-section which is non-circular (F28F1/08, F28F1/10 take precedence)

Full Title

Full titles differ between systems:

IPC:

Tubular elements; Assemblies of tubular elements > Tubular elements of cross-section which is non-circular

CPC:

Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F5/00) > Tubular elements of cross-section which is non-circular (F28F1/08, F28F1/10 take precedence)

CPC subdivides this area 3x more granularly than IPC with 3 additional codes.

3 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.

Child Classifications

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F28F 1/022 CPC only CPC only
F28F 1/025 CPC only CPC only
F28F 1/04 polygonal, e.g. rectangular +1 CPC IPC+CPC Available in IPC and CPC
F28F 1/06 crimped or corrugated in cross-section IPC+CPC Available in IPC and CPC
F28F 2001/027 2nd only CPC only CPC only