B01D 33/00 Filters with filtering elements which move during the filtering operation (filters comprising loose filtering material moving or fluidised during filtration B01D24/28 - B01D24/36; centrifuges B04B)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Filters with filtering elements which move during the filtering operation
CPC: Filters with filtering elements which move during the filtering operation (filters comprising loose filtering material moving or fluidised during filtration B01D24/28 - B01D24/36; centrifuges B04B)
Full Title
Full titles differ between systems:
Filters with filtering elements which move during the filtering operation
Filters with filtering elements which move during the filtering operation (filters comprising loose filtering material moving or fluidised during filtration B01D24/28 - B01D24/36; centrifuges B04B)
IPC and CPC are identically structured here. All 14 subcodes exist in both systems.
8 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B01D 33/01 with translationally moving filtering elements, e.g. pistons (B01D33/04 - B01D33/327 take precedence) since 1990 +2 CPC IPC+CPC Available in IPC and CPC
- B01D 33/04 with filtering bands or the like supported on cylinders which are impervious for filtering +1 CPC IPC+CPC Available in IPC and CPC
- B01D 33/044 with filtering bands or the like supported on cylinders which are pervious for filtering since 1990 IPC+CPC Available in IPC and CPC
- B01D 33/056 Construction of filtering bands or supporting belts, e.g. devices for centering, mounting or sealing the filtering bands or the supporting belts since 1990 +1 CPC IPC+CPC Available in IPC and CPC
- B01D 33/06 with rotary cylindrical filtering surfaces, e.g. hollow drums (B01D33/044 takes precedence ) IPC+CPC Available in IPC and CPC
- B01D 33/27 with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces since 1990 +1 CPC IPC+CPC Available in IPC and CPC
- B01D 33/29 the movement of the filter elements being a combination of movements (B01D33/19 takes precedence) since 1990 IPC+CPC Available in IPC and CPC
- B01D 33/333 with individual filtering elements moving along a closed path (tipping buckets, trays or like sections B01D33/327) since 1990 IPC+CPC Available in IPC and CPC
- B01D 33/35 with multiple filtering elements characterised by their mutual disposition ( , B01D33/21 take precedence) since 1990 IPC+CPC Available in IPC and CPC
- B01D 33/44 Regenerating the filter material in the filter (devices for taking out of action one or more units of multi-unit filters, e.g. for regeneration, B01D35/12) since 1990 IPC+CPC Available in IPC and CPC
- B01D 33/58 Handling the filter cake in the filter for purposes other than for regenerating (B01D33/76 takes precedence) since 1990 IPC+CPC Available in IPC and CPC
- B01D 33/70 having feed or discharge devices (B01D33/82 takes precedence) since 1990 +1 CPC IPC+CPC Available in IPC and CPC