Patent ID: 8550779

Claim:
An assembly for sealing an inlet into a to-be-sealed space, comprising: at least one charging electrode connectable to one pole of a high voltage source and aligned with a first radial side of the inlet, and an opposing electrode aligned with a second radial side of the inlet that lies opposite of the first radial side, the at least one charging electrode being inclined with respect to the opposing electrode, wherein the at least one charging electrode and the opposing electrode are aligned with each other such that, when the pole of the high voltage source is connected to the at least one charging electrode, an influencing zone spanning the inlet between the first and second radial sides is formed between the at least one charging electrode and the opposing electrode in which influencible particles are accelerated in a direction away from the to-be-sealed space and in a direction perpendicular thereto, the influencing zone being configured to form an inclined barrier in the inlet configured to prevent matter from traversing the inlet in a direction toward the to-be-sealed space from an outside.