Sound isolating enclosure for internal combustion engine generator set

Claim 1

A SOUND ISOLATING STRUCTURE FOR AN INTERNAL COMBUSTION ENGINE GENERATOR SET, COMPRISING A BASE FRAME, A COVER FRAME, SAID FRAMES HAVING MATING LIPS, SOUND DEADING LAMINATES OVERLYING THE RESPECTIVE FRAMES AND FORMING AN ENCLOSURE WHEN THE FRAMES ARE ASSEMBLED WITH THE LIPS MATED TO EACH OTHER, SAID LAMINATES COMPRISING INNER AND OUTER SKINS AND A LAYER OF HIGH DENSITY VISCOELASTIC MATERIAL SANDWICHED BETWEEN THE SKINS, MEANS SPACED FROM THE OUTER SKINS FOR ATTACHING THE INNER SKINS TO THE RESPECTIVE FRAMES, THE JOINTS BETWEEN ADJACENT LAMINATES BEING FORMED BY ONE LAMINATE OVERLAPPING THE EDGE OF THE ADJACENT LAMINATE AND THEINNER SKIN OF SAID ONE LAMINATE BEING CUT WAY IN THE REGION OF OVERLAP TO PREVENT DYNAMIC ACOUSTICAL COUPLING OF SAID EDGE OF THE ADJACENT LAMINATE, MEANS SPACED FROM THE INNER SKINS FOR JONING THE EXTERNAL SKINS OF ADJACENT LAMINATES AT THE JOINTS, A MOLDING OVERLAPPING THE JOINT BETWEEN SAID LIPS, MEANS SPACED FROM THE INNER SKINS OF LAMINATES ON ONE OF THE FRAMES FOR ATTACHING THE MOLDING TO THE OUTER SKINS OF THE LAMINATES OF SAID ONE FRAME, MEANS SPACED FROM THE INNER SKIN OF THE LAMINATES ON THE OTHER FRAME FOR CONNECTING THE MOLDING TO THE OUTER SKINS OF THE LAMINATES ON THE OTHER FRAME, STRUCTURE BORNE NOISE ISOLATING MEANS ON THE BASE FRAME ADAPTED TO SUPPORT THE ENGINE GENERATOR SET, INLET AND OUTLET PASSAGEWAYS FOR CONDUCTING COMBUSTION AND COOLING AIR INTO AND OUT OF THE ENCLOSURE, A MUFFLER ENCLOSURE SURROUNDED BY SOUND DEADENING LAMINATES, AN INLET TO AND AN OUTLET FROM THE MUFFLER ENCLOSURE, A COIL SPRING DEFINING A SERPENTINE PATH BETWEEN SAID INLET AND OUTLET, GLASS FIBER FELT OVERLYING THE COIL SPRING, THE COILS OF THE SPRING BEING SPACED FROM EACH OTHER AND THE FIBERS OF THE FELT EXTENDING TRANSVERSE TO THE RADIUS OF THE COILS.