Silencing apparatus characterised by method of silencing

Child Classifications

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• F01N 1/003 +1 CPC CPC only CPC only
• F01N 1/02 by using resonance +2 CPC IPC+CPC Available in IPC and CPC
• F01N 1/06 by using interference effect +1 CPC IPC+CPC Available in IPC and CPC
• F01N 1/08 by reducing exhaust energy by throttling or whirling +7 CPC IPC+CPC Available in IPC and CPC
• F01N 1/14 by adding air to exhaust gases IPC+CPC Available in IPC and CPC
• F01N 1/16 by using movable parts +4 CPC IPC+CPC Available in IPC and CPC
• F01N 1/24 by using sound-absorbing materials (F01N1/04, F01N1/06, F01N1/10, F01N1/14, F01N1/16 take precedence) IPC+CPC Available in IPC and CPC