Descriptions for F04B and notes/indexes are displayed on this screen.
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POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F)
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Note(s)
In this subclass, the following term is used with the meaning indicated:[7,2009.01]"piston" also covers a plunger. Attention is drawn to the Notes following the titles of class B81 and subclass B81Brelating to "microstructural devices" and "microstructural systems".Attention is drawn to the Notes preceding class F01, especially as regards the definitions of "machines", "pumps", and "positive-displacement".Machines, pumps or pumping installations having flexible working members are classified in groups F04B 43/00—or F04B 45/00.
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Subclass indexes
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS, PUMPS IN GENERAL | General characteristics of machines and pumps | multiple cylinders; single cylinders, pistons coacting in cylinder; differential-surface pistons; flexible working members | 1/00; 3/00; 5/00; 43/00 | positively-driven distribution members; driving or driven means to or from working members | 7/00; 9/00 | equalization of pulses, counteracting cavitation | 11/00 | other characteristics | 19/00 | Characteristics peculiar to pumps, their adaptations or combinations | delivering measured quantities; handling specific fluids; pumping from great depths | 13/00; 15/00; 47/00 | associated with specific driving engines | 17/00 | Other characteristics | 19/00 | Pumping installations or systems | 23/00, 43/00, 47/00 | Component parts, details or accessories | 53/00 | PUMPS FOR ELASTIC FLUIDS | General characteristics | multiple stages; multiple cylinders | 25/00; 27/00 | free piston; flexible working member; actuation by muscle power | 31/00; 45/00; 33/00 | driving means | 35/00 | For pumping from great depths | 47/00 | Other characteristics; other details or accessories | 37/00; 39/00 | Pumping installations or systems | 41/00, 45/00, 47/00 | CONTROL, SAFETY MEASURES; TESTING | 49/00; 51/00 | COMPONENT PARTS, DETAILS OR ACCESSORIES | 53/00 |
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