| 1/00 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) |
| 1/02 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements of cross-section which is non-circular (F28F 1/08, F28F 1/1 take precedence) |
| 1/04 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements of cross-section which is non-circular (F28F 1/08, F28F 1/1 take precedence) polygonal, e.g. rectangular |
| 1/06 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements of cross-section which is non-circular (F28F 1/08, F28F 1/1 take precedence) crimped or corrugated in cross-section |
| 1/08 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements crimped or corrugated in longitudinal section |
| 1/10 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F 1/06, F28F 1/08) |
| 1/12 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F 1/06, F28F 1/08) the means being only outside the tubular element |
| 1/14 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F 1/06, F28F 1/08) the means being only outside the tubular element and extending longitudinally (F28F 1/38 takes precedence) |
| 1/16 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F 1/06, F28F 1/08) the means being only outside the tubular element and extending longitudinally (F28F 1/38 takes precedence) the means being integral with the element, e.g. formed by extrusion (F28F 1/22 takes precedence) |
| 1/18 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F 1/06, F28F 1/08) the means being only outside the tubular element and extending longitudinally (F28F 1/38 takes precedence) the means being integral with the element, e.g. formed by extrusion (F28F 1/22 takes precedence) the element being built-up from finned sections |
| 1/20 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F 1/06, F28F 1/08) the means being only outside the tubular element and extending longitudinally (F28F 1/38 takes precedence) the means being attachable to the element (F28F 1/22 takes precedence) |
| 1/22 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F 1/06, F28F 1/08) the means being only outside the tubular element and extending longitudinally (F28F 1/38 takes precedence) the means having portions engaging further tubular elements |
| 1/24 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F 1/06, F28F 1/08) the means being only outside the tubular element and extending transversely (F28F 1/38 takes precedence) |
| 1/26 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F 1/06, F28F 1/08) the means being only outside the tubular element and extending transversely (F28F 1/38 takes precedence) the means being integral with the element (F28F 1/32 takes precedence) |
| 1/28 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F 1/06, F28F 1/08) the means being only outside the tubular element and extending transversely (F28F 1/38 takes precedence) the means being integral with the element (F28F 1/32 takes precedence) the element being built-up from finned sections |
| 1/30 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F 1/06, F28F 1/08) the means being only outside the tubular element and extending transversely (F28F 1/38 takes precedence) the means being attachable to the element (F28F 1/32 takes precedence) |
| 1/32 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F 1/06, F28F 1/08) the means being only outside the tubular element and extending transversely (F28F 1/38 takes precedence) the means having portions engaging further tubular elements |
| 1/34 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F 1/06, F28F 1/08) the means being only outside the tubular element and extending obliquely (F28F 1/38 takes precedence) |
| 1/36 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F 1/06, F28F 1/08) the means being only outside the tubular element and extending obliquely (F28F 1/38 takes precedence) the means being helically-wound fins or wire spirals |
| 1/38 | Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F 1/06, F28F 1/08) the means being only outside the tubular element and being staggered to form tortuous fluid passages |