Patent ID: 8549988

Claim:
A mounting arrangement for the piston of a reciprocating hermetic compressor of the type comprising: a cylinder, with an opened end and an opposite end closed by a valve plate inside which is mounted a piston defining a compression chamber with the closed end of the cylinder; said piston provided with a pair of radial holes, each lodging and retaining one end of a pin, to which is coupled a driving mechanism of the compressor to reciprocate the piston inside the cylinder, varying the volume of the compression chamber; the piston further including two bearing surfaces, each of the bearing surfaces spaced apart from each other, each bearing surface maintaining a radial gap with the cylinder; and a clamp axially fitted into an end of the pin and having an end flange, which is peripherally and sealingly seated inside said radial hole, wherein the radial holes are completely sealed in relation to the radial gaps of the bearing surfaces, so that both radial gaps operate together and as a function of their respective axial extensions, as means for restraining the leakage of the refrigerant gas outwardly and inwardly in relation to the compression chamber.