Patent ID: 8122555

Claim:
An apparatus for cleaning floor comprising: a support member; a driver positioned on the support member; a power converter for converting a rotary motion provided from the driver into a power for a rectilinear reciprocating motion; first and second movable members rectilinearly reciprocating along the same straight line in opposite directions with each other through the use of power provided from the power converter; and first and second course guiding means to guide the rectilinear reciprocating motions of the first and second movable members, respectively, wherein the driver comprises: a driving motor; a first interlocking pulley rotated by the driving motor; a second interlocking pulley; and an interlocking timing belt for transmitting a rotary motion of the first interlocking pulley to the second interlocking pulley, wherein the first course guiding means comprises: a sliding member mounted on the first movable member and rectilinearly reciprocating together with the first movable member; and a guide member, fixed on the support member, for guiding the rectilinear reciprocating motion of the sliding member, and wherein the sliding member comprises: a shaft; and a first damper, mounted on each of both ends of the shaft, for dampering shock and noise generated by vibration of the apparatus.