Patent ID: 7189068

Claim:
A rotary vane compressor which exhibits reduced sound of operation and comprises: a motor; a non-vented housing surrounding said motor; a non-vented back or closure secured to one end of said housing; a drive shaft extending from and operatively associated with said motor; at least one deep groove ball bearing for supporting said drive shaft and having a sound dampening grease sealed within said bearing; a rotor with vane receiving slots coupled to said drive shaft for rotation therewith; a body which defines a cavity within which said rotor rotates, said body fabricated of a first sound dampening material; a non-vented shroud which surrounds the body, said shroud comprising laminated layers of at least one layer of metal and at least one layer of a second sound dampening material; a front plate engaging the body in defining a pair of air conducting chambers; and a muffler box which engages the front plate and defines an inlet port and an outlet port, each of which communicates with one of said chambers.