Patent ID: 8651831

Claim:
A suspension spring and snubber assembly for reducing transmitted noise from a reciprocating compressor at ⅓-octave frequency band of 500 Hz and preventing the occurrence of resonance frequency during the operation of the reciprocating compressor, the assembly comprising: a suspension spring comprising a plurality of coils and having two opposing open ends which define a circular tubular space within their helix shape; and a cylindrical snubber secured to a supporting member of the reciprocating compressor for maintaining the integrity and shape of the suspension spring and for preventing displacement of the suspension spring from its intended position; wherein the cylindrical snubber has a body and a groove at or near the base of the body, wherein the groove has an outer diameter that is smaller than that, of the body; wherein one of the two opposing open ends of the suspension spring comprises at least one end coil having an internal diameter that is smaller than that of the non-end coils of the plurality of coils, and smaller than the outer diameter of the body of the cylindrical snubber, but larger than the outer diameter of the groove of the cylindrical snubber; and wherein the non-end coils of the plurality of coils have an internal diameter that is larger than the outer diameter of the body of the cylindrical snubber; so that when the cylindrical snubber and the suspension spring are assembled, the at least one end coil is loosely fitted over the groove and the non-end coils of the plurality of coils are loosely fitted over the body of the cylindrical snubber such that the physical contact between the suspension spring and the cylindrical snubber is eliminated or minimized during operation.