Patent ID: 7708255
Filing Date: 2010-05-04
Classification: B23D,F16K

Abstract:
1. A thermal deburring apparatus, comprising: a pressure-tight closeable deburring chamber connected to an environment via a ventilation passage having a passage direction; a ventilation valve closing said ventilation passage and having a stationary valve seat encompassing said ventilation passage, a valve tappet that is movable in said passage direction, and a seal affixed to said valve tappet, wherein said seal is composed of an inner ring, an outer ring, and a deformable ring core that is disposed between said inner and outer rings, wherein said valve tappet has a recess adapted to said inner and outer rings, wherein said inner and outer rings and said deformable ring core are accommodated in said recess, and wherein said inner and outer rings are bringable into contact with said stationary valve seat, such that said deformable ring core is enclosed by said recess, said inner and outer rings, and said stationary valve seat on all sides, such that said deformable ring core is subjected to pressure on all sides.