DIFF Subgroup
G01F 11/28 with stationary measuring chambers having constant volume during measurement
Introduced: September 1968
Full Title
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it > with stationary measuring chambers having constant volume during measurement
CPC subdivides this area 2x more granularly than IPC with 4 additional codes.
4 codes are CPC-only extensions.
Child Classifications
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- G01F 11/30 with supply and discharge valves of the lift or plug-lift type IPC+CPC Available in IPC and CPC
- G01F 11/36 with supply or discharge valves of the rectilinearly-moved slide type IPC+CPC Available in IPC and CPC
- G01F 11/42 with supply or discharge valves of the rotary or oscillatory type IPC+CPC Available in IPC and CPC