Appeal No. 98-2325
Application No. 08/546,116
APPENDIX
1. A central vacuum cleaner having a muffler
communicated in air flow relation to an exhaust air flow pipe,
said muffler comprising an elongated muffler pipe having an
inlet and outlet and a foam liner disposed in said muffler
pipe, said foam liner having an inner surface that is
substantially flush with inner surfaces of said inlet and
outlet, said foam liner having a minimum length sufficient to
achieve substantial exhaust air flow noise reduction.
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