Applications, arrangements or dispositions of alarm or automatic safety devices (for feed-water heaters F22D1/14 )

Child Classifications

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• F22B 37/421 CPC only CPC only
• F22B 37/423 CPC only CPC only
• F22B 37/425 CPC only CPC only
• F22B 37/426 CPC only CPC only
• F22B 37/428 CPC only CPC only
• F22B 37/44 of safety valves +2 CPC IPC+CPC Available in IPC and CPC
• F22B 37/46 responsive to low or high water level, e.g. for checking, suppressing or extinguishing combustion in boilers IPC+CPC Available in IPC and CPC
• F22B 37/47 responsive to abnormal temperature, e.g. actuated by fusible plugs +1 CPC IPC+CPC Available in IPC and CPC