F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
ENGINES AND PUMPS
 F04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS (charging or scavenging combustion engines by pumps F02B; engine fuel-injection pumps F02M; ion pumps H01J 41/12; electrodynamic pumps H02K 44/02)
 F04

Note(s)

Combinations of positive-displacement and non-positive-displacement pumps are to be found in the following sub-classes: F04B as a general sub-class for pumps; F04C, F04D in respect of matter peculiar to these sub-classes.

 F04D
NON-POSITIVE-DISPLACEMENT PUMPS
 F04D

Note(s)

  1. Attention is drawn to the notes preceding class F01, especially as regards the definition of the term "pump".
  2. This sub-class comprises: non-positive-displacement pumps for liquids, for elastic fluids, or for liquids and elastic fluids, whether rotary or not having pure rotation.
  3. Combinations of non-positive-displacement pumps with other pumps are dealt with in sub-class F04B, except that the use of such other pumps for priming or boosting non-positive-displacement pumps is dealt with in the present sub-class.
 F04D 1/00 - 
F04D 15/00
Pumping liquids, or liquids and elastic fluids, by rotary pumps (pumping liquids and elastic fluids at the same time F04D 31/00)
 F04D 1/00
Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (adapted for pumping specific fluids F04D 7/00; priming or boosting F04D 9/00)
 F04D 1/02
·  having non-centrifugal stages, e.g. centripetal
 F04D 1/04
·  Helico-centrifugal pumps
 F04D 1/06
·  Multi-stage pumps (F04D 1/02 takes precedence)
 F04D 1/08
·  ·  the stages being situated concentrically
 F04D 1/10
·  ·  with means for changing the flow-path through the stages, e.g. series/parallel
 F04D 1/12
·  Pumps with scoops or like paring members protruding in the fluid circulating in a bowl
 F04D 1/14
·  Pumps raising fluids by centrifugal force within a conical rotary bowl with vertical axis
 F04D 3/00
Axial-flow pumps (priming or boosting F04D 9/00)
 F04D 3/02
·  of screw type
 F04D 5/00
Pumps with circumferential or transverse flow
 F04D 7/00
Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
 F04D 7/02
·  of centrifugal type
 F04D 7/04
·  ·  the fluids being viscous or non-homogeneous
 F04D 7/06
·  ·  the fluids being hot or corrosive, e.g. liquid metal
 F04D 7/08
·  ·  the fluids being radioactive
 F04D 9/00
Priming; Preventing vapour lock
 F04D 9/02
·  Self-priming pumps
 F04D 9/04
·  Using priming pumps; Using booster pumps to prevent vapour lock
 F04D 9/06
·  ·  of jet type
 F04D 11/00
Other rotary non-positive-displacement pumps (pumping installations or systems F04D 13/00)
 F04D 13/00
Pumping installations or systems (controlling F04D 15/00)
 F04D 13/02
·  Units comprising pumps and their driving means (predominant aspects of the driving means, see the relevant classes for such means)
 F04D 13/04
·  ·  the pump being fluid-driven
 F04D 13/06
·  ·  the pump being electrically driven
 F04D 13/08
·  ·  ·  for submerged use
 F04D 13/10
·  ·  ·  ·  adapted for use in mining bore holes
 F04D 13/12
·  Combinations of two or more pumps (combinations with priming pumps or booster pumps to counter-act vapour lock F04D 9/04)
 F04D 13/14
·  ·  the pumps being all of centrifugal type
 F04D 13/16
·  with storage reservoirs
 F04D 15/00
Control, e.g. regulation, of pumps, pumping installations, or systems
 F04D 15/02
·  Stopping of pumps, or operating valves, on occurrence of unwanted conditions
 F04D 17/00 - 
F04D 27/00
Pumping elastic fluids by rotary pumps
 F04D 17/00
Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (F04D 21/00 takes precedence)
 F04D 17/02
·  having non-centrifugal stages, e.g. centripetal
 F04D 17/04
·  ·  of transverse-flow type
 F04D 17/06
·  Helico-centrifugal pumps
 F04D 17/08
·  Centrifugal pumps
 F04D 17/10
·  ·  for compressing or evacuating
 F04D 17/12
·  ·  ·  Multi-stage pumps
 F04D 17/14
·  ·  ·  ·  with means for changing the flow-path through the stages, e.g. series/parallel (surge control F04D 27/02)
 F04D 17/16
·  ·  for displacing without appreciable compression
 F04D 17/18
·  ·  characterised by use of centrifugal force of liquids entrained in pumps
 F04D 19/00
Axial-flow pumps (F04D 21/00 takes precedence)
 F04D 19/02
·  Multi-stage pumps
 F04D 19/04
·  ·  specially adapted to the production of a high vacuum, e.g. molecular pumps
 F04D 21/00
Pumps involving supersonic speed of pumped fluids
 F04D 23/00
Other rotary non-positive-displacement pumps (pumping installations or systems F04D 25/00)
 F04D 25/00
Pumping installations or systems (controlling F04D 27/00)
 F04D 25/02
·  Units comprising pumps and their driving means (predominant aspects of the driving means, see the relevant classes for such means)
 F04D 25/04
·  ·  the pump being fluid-driven
 F04D 25/06
·  ·  the pump being electrically driven (F04D 25/08 takes precedence)
 F04D 25/08
·  ·  the working fluid being air, e.g. for ventilation
 F04D 25/10
·  ·  ·  the unit having provisions for automatically changing the direction of output air
 F04D 25/12
·  ·  ·  the unit being adapted for mounting in apertures
 F04D 25/14
·  ·  ·  ·  and having shutters, e.g. automatically closed when not in use
 F04D 25/16
·  Combinations of two or more pumps
 F04D 27/00
Control, e.g. regulation, of pumps, pumping installations, or systems
 F04D 27/02
·  Surge control
 F04D 29/00
Details, component parts, or accessories (machine elements in general F16)
 F04D 29/02
·  Selection of particular materials (for handling specific liquids F04D 7/00)
 F04D 29/04
·  Shafts; Bearings; Lubrication (of machines or engines in general F01M)
 F04D 29/06
·  ·  Lubrication
 F04D 29/08
·  Sealings
 F04D 29/10
·  ·  Shaft sealings
 F04D 29/12
·  ·  ·  using sealing-rings
 F04D 29/14
·  ·  ·  operative only when pump is inoperative
 F04D 29/16
·  ·  between pressure and suction sides
 F04D 29/18
·  Rotors (specially for elastic fluids F04D 29/26)
 F04D 29/20
·  ·  Mounting rotors on shafts
 F04D 29/22
·  ·  specially for centrifugal pumps
 F04D 29/24
·  ·  ·  Vanes
 F04D 29/26
·  Rotors specially for elastic fluids
 F04D 29/28
·  ·  for centrifugal or helico-centrifugal pumps
 F04D 29/30
·  ·  ·  Vanes
 F04D 29/32
·  ·  for axial-flow pumps
 F04D 29/34
·  ·  ·  Blade mountings
 F04D 29/36
·  ·  ·  ·  adjustable
 F04D 29/38
·  ·  ·  Blades
 F04D 29/40
·  Casings; Connections for working fluid
 F04D 29/42
·  ·  for radial or helico-centrifugal pumps
 F04D 29/44
·  ·  ·  Fluid-guiding means, e.g. diffusers
 F04D 29/46
·  ·  ·  ·  adjustable
 F04D 29/48
·  ·  ·  ·  ·  for unidirectional fluid flow in reversible pumps
 F04D 29/50
·  ·  ·  ·  ·  for reversing fluid flow
 F04D 29/52
·  ·  for axial pumps
 F04D 29/54
·  ·  ·  Fluid-guiding means, e.g. diffusers
 F04D 29/56
·  ·  ·  ·  adjustable
 F04D 29/58
·  Cooling (of machines or engines in general F01P); Heating; Diminishing heat transfer
 F04D 29/60
·  Mounting; Assembling; Disassembling
 F04D 29/62
·  ·  or radial or helico-centrifugal pumps
 F04D 29/64
·  ·  of axial pumps
 F04D 29/66
·  Combating cavitation, whirls, noise, vibration, or the like (gas-flow silencers for machines or engines in general F01N); Balancing (surge control F04D 27/02)
 F04D 29/68
·  ·  by influencing boundary layers
 F04D 29/70
·  Suction grids; Strainers; Dust separation; Cleaning
 F04D 31/00 - 
F04D 35/00
Other non-positive-displacement pumps
 F04D 31/00
Pumping liquids and elastic fluids at the same time
 F04D 33/00
Non-positive-displacement pumps with other than pure rotation, e.g. of oscillating type (F04D 35/00 takes precedence; hand-held fans A45B)  [2]
 F04D 35/00
Pumps producing waves in liquids, i.e. wave-producers (for bath tubs A47K 3/10)  [2]