Hermetic assembly arrangement for a current conducting pin passing through a housing wall

A hermetic assembly for a walled machine housing for a compressor unit and a control unit disposed in said housing comprising:

• a machine housing with a wall housing panel opening in a wall of said machine housing;
• a separate unitary wall panel removably mounted on the wall of said machine housing sized and configured to sealingly cover said wall housing panel opening, said unitary panel having a plurality of appropriately sized larger and smaller pin openings therein extending between opposed faces of said panel with each of said larger and smaller openings being provided with internal threads extending along the inner peripheral surface thereof from opposite faces of said panel;
• a plurality of appropriately sized larger and smaller externally threaded annular stainless steel sleeve members for each of said larger and smaller openings respectively, each of said sleeve member being of a length substantially equivalent to the length of said opening and being adjustably engagable with said internal threads of one of said matchingly sized openings, each of said externally threaded annular sleeve including an annular shoulder configured with respect to said correspondingly matching opening to provide a closeable recess with a groove surrounding said corresponding opening along the outer face of said unitary wall panel;
• a plurality of appropriately sized larger and smaller compressible rubber O-rings, each disposed in a correspondingly sized recess to seal the space therebetween;
• a plurality of current conducting pins of larger and smaller diameter extending longitudinally along the central longitudinal axis of each of said larger and smaller externally threaded annular sleeve respectively, each being in spaced relation from the inner peripheral surface of the annular sleeve with which it is associated;
• a plurality of glass seals, one for each of said externally threaded larger and smaller annular sleeve extending in fused relation between the outer peripheral surface of each said pins and the internal peripheral surface of said externally threaded annular sleeve with which it is associated;
• a pair of insulating annular ceramic sleeves for each of said larger externally threaded sleeves, each pair of said insulating ceramic sleeves being disposed in mirror-image relation on opposed faces of said glass seal in fused embedded sealed relation therewith, with the outer peripheral surface of each insulating ceramic sleeve abutting the inner peripheral wall of the externally threaded sleeve with which it is associated and the inner peripheral wall of each insulating ceramic sleeve abutting the outer peripheral surface of the current conducting pin disposed along the longitudinal central axis of the associated externally threaded annular sleeve;
• and,
• a plurality of longitudinally extending plastic protective annular sleeve members each snugly engaging and protected the inner portion of said smaller current conducting pins.