applicable to more than one kind or type of steam boiler

Child Classifications

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• F22B 37/025 CPC only CPC only
• F22B 37/04 and characterised by material, e.g. use of special steel alloy IPC+CPC Available in IPC and CPC
• F22B 37/06 Flue or fire tubes; Accessories therefor, e.g. fire-tube inserts IPC+CPC Available in IPC and CPC
• F22B 37/10 Water tubes; Accessories therefor +5 CPC IPC+CPC Available in IPC and CPC
• F22B 37/22 Drums; Headers; Accessories therefor +5 CPC IPC+CPC Available in IPC and CPC
• F22B 37/24 Supporting, suspending or setting arrangements, e.g. heat shielding +3 CPC IPC+CPC Available in IPC and CPC
• F22B 37/26 Steam-separating arrangements +5 CPC IPC+CPC Available in IPC and CPC
• F22B 37/34 Adaptations of boilers for promoting water circulation (auxiliary devices for promoting water circulation F22D7/00) IPC+CPC Available in IPC and CPC
• F22B 37/36 Arrangements for sheathing or casing boilers +1 CPC IPC+CPC Available in IPC and CPC
• F22B 37/38 Determining or indicating operating conditions in steam boilers, e.g. monitoring direction or rate of water flow through water tubes IPC+CPC Available in IPC and CPC
• F22B 37/40 Arrangements of partition walls in flues of steam boilers, e.g. built-up from baffles IPC+CPC Available in IPC and CPC
• F22B 37/42 Applications, arrangements or dispositions of alarm or automatic safety devices (for feed-water heaters F22D1/14 ) +5 CPC IPC+CPC Available in IPC and CPC
• F22B 37/48 Devices or arrangements for removing water, minerals or sludge from boilers (cleaning water tubes, furnace tubes or the like of boilers F28G) +2 CPC IPC+CPC Available in IPC and CPC
• F22B 37/56 Boiler cleaning control devices, e.g. for ascertaining proper duration of boiler blow-down +1 CPC IPC+CPC Available in IPC and CPC
• F22B 37/58 Removing tubes from headers or drums; Extracting tools IPC+CPC Available in IPC and CPC