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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||181/50 ; 173/DIG ; 2 ; 181/42 ; 181/53|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 23 인용 특허 : 0|
A muffler system for attenuating exhaust noise from pile driving apparatus including an exhaust passage therein having perforated straight sections and unperforated curved sections. The exhaust passage is surrounded with acoustical absorbing material and screen means is interposed between the exhaust passage and the absorbing material. The muffler system can be adapted for modular construction whereby modular muffler section can be stacked and connected in series to provide a muffler passage of desired length to fit within a confined width.
A muffler for attenuating exhaust noise from a pile driving apparatus, which comprises a first muffler section comprising: a housing having two ends; a first inlet port formed in a side of said housing substantially near a first end thereof; a first outlet port formed in a side of said housing substantially near a second end thereof; an elongated muffler passage in said housing, having a perforated substantially straight portion, said straight section extending substantially from said first end of said housing to said second end of said housing; an unper...