公开(公告)号：US4551879A

公开(公告)日：1985-11-12

申请号：US661128

申请日：1984-10-15

Applicant: Isaac Ray

Inventor： Isaac Ray

IPC: A47L9/02 ,  A47L23/26 ,  A47L5/38

CPC classification number: A47L23/263 ,  A47L9/02

Abstract: An entrance dust arrester is provided which vacuums the area directly under a door as the door is opened and closed, thereby preventing the tracking of debris into a clean area. A housing with downward facing vacuum apertures may be attached to the outside of the door or may be built into the door itself. A system of air directing vanes distributes the vacuum evenly. The vacuum source itself may be integral to the housing or may be external and connected by a moveable coupling. The vacuum source is turned on and off by either or magnetic reed switch or a pressure operated switch.

Abstract translation: 提供入口除尘器，当门打开和关闭时，门直接在该区域抽真空，从而防止将碎屑跟踪到清洁区域。 具有向下的真空孔的壳体可以附接到门的外部，或者可以内置在门本身中。 空气导向叶片系统均匀分布真空。 真空源本身可以与壳体成一体，或者可以是外部的并通过可移动联接器连接。 真空源通过磁簧开关或压力开关来打开和关闭。