Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F04
POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
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F04C
ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
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29/00
Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
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F04C29/12
Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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F04C29/124
with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
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F04C29/126
of the non-return type
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