| 1/00 | Apparatus in which the main direction of flow follows a flat spiral |
| 3/00 | Apparatus in which the axial direction of the vortex remains unchanged |
| 3/02 | Apparatus in which the axial direction of the vortex remains unchanged with heating or cooling, e.g. quenching, means |
| 3/04 | Apparatus in which the axial direction of the vortex remains unchanged Multiple arrangement thereof |
| 3/06 | Apparatus in which the axial direction of the vortex remains unchanged Construction of inlets or outlets to the vortex chamber |
| 5/00 | Apparatus in which the axial direction of the vortex is reversed |
| 5/02 | Apparatus in which the axial direction of the vortex is reversed Construction of inlets by which the vortex flow is generated |
| 5/04 | Apparatus in which the axial direction of the vortex is reversed Construction of inlets by which the vortex flow is generated Tangential inlets |
| 5/06 | Apparatus in which the axial direction of the vortex is reversed Construction of inlets by which the vortex flow is generated Axial inlets |
| 5/08 | Apparatus in which the axial direction of the vortex is reversed Vortex chamber constructions |
| 5/081 | Apparatus in which the axial direction of the vortex is reversed Vortex chamber constructions Shapes or dimensions |
| 5/085 | Apparatus in which the axial direction of the vortex is reversed Vortex chamber constructions with wear-resisting arrangements |
| 5/087 | Apparatus in which the axial direction of the vortex is reversed Vortex chamber constructions with flexible gas-tight walls |
| 5/10 | Apparatus in which the axial direction of the vortex is reversed Vortex chamber constructions with perforated walls |
| 5/103 | Apparatus in which the axial direction of the vortex is reversed Vortex chamber constructions Bodies or members, e.g. bulkheads, guides, in the vortex chamber (cores B04C 5/107) |
| 5/107 | Apparatus in which the axial direction of the vortex is reversed Vortex chamber constructions Cores; Devices for inducing an air-core in hydrocyclones (forming part of the outlet pipe B04C 5/13) |
| 5/12 | Apparatus in which the axial direction of the vortex is reversed Construction of the overflow ducting, e.g. diffusing or spiral exits |
| 5/13 | Apparatus in which the axial direction of the vortex is reversed Construction of the overflow ducting, e.g. diffusing or spiral exits formed as a vortex finder and extending into the vortex chamber; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow |
| 5/14 | Apparatus in which the axial direction of the vortex is reversed Construction of the underflow ducting; Apex constructions; Discharge arrangements |
| 5/15 | Apparatus in which the axial direction of the vortex is reversed Construction of the underflow ducting; Apex constructions; Discharge arrangements with swinging flaps or revolving sluices; Sluices; Check-valves |