公开(公告)号：US06723159B2

公开(公告)日：2004-04-20

申请号：US10201412

申请日：2002-07-22

Applicant: Meng-Chieh Cheng

Inventor： Meng-Chieh Cheng

IPC: B01D35143

CPC classification number: B01D46/0086 ,  B01D46/444 ,  B01D2273/30 ,  Y10S55/34 ,  Y10S116/25

Abstract: An air filter capable of visual indication of a clogged condition thereof includes a housing, a filter unit, a fan unit and a signaling device. The housing has an air inlet, an air outlet, and an air passage extending from the air inlet to the air outlet. The signaling device includes a flap disposed to span the air passage, a horizontal pivot pin connected securely to the flap and pivotable relative to the housing, and a pointer connected to one end of the pivot pin and rotatable with the pivot pin relative to the housing. A reduction in air flow through the air passage attributed to a clogged condition of the air filter causes the flap to pivot and move the pointer relative to the housing so as to indicate the clogged condition of the air filter.

Abstract translation: 能够可视地指示其堵塞状态的空气过滤器包括壳体，过滤器单元，风扇单元和信号装置。 壳体具有空气入口，空气出口和从空气入口延伸到空气出口的空气通道。 所述信号装置包括设置成跨越所述空气通道的翼片，与所述翼片牢固连接并相对于所述壳体枢转的水平枢轴销，以及连接到所述枢转销的一端并且可相对于所述壳体可旋转的所述枢转销的指针 。 归因于空气过滤器的状况堵塞导致通过空气通道的气流的减少使得挡板相对于壳体枢转并移动指针，以指示空气过滤器的堵塞状况。

公开(公告)号：US6101666A

公开(公告)日：2000-08-15

申请号：US298529

申请日：1999-04-23

Applicant: Meng-Chieh Cheng

Inventor： Meng-Chieh Cheng

IPC: A47L7/00 ,  B08B15/04 ,  B23Q11/00 ,  A47L5/38

CPC classification number: A47L7/0047 ,  A47L7/0095 ,  B08B15/04 ,  B23Q11/0046 ,  Y02P70/171

Abstract: A workbench includes a hollow base member formed with a lower chamber and an upper chamber that is disposed above and in fluid communication with the lower chamber. A tabletop is mounted on top of the base member and is formed with a plurality of apertures for access into the upper chamber. An air filtering device is mounted in the upper chamber. A motor-operated suction device is mounted in the lower chamber and is operable to create a downward air stream for drawing air to flow in a direction from above the tabletop into the base member such that woodworking waste on the tabletop can be drawn into the base member via the apertures so as to be entrapped by the air filtering device.

Abstract translation: 工作台包括形成有下室的中空基座构件和设置在下腔室上方并与下室流体连通的上腔室。 台面安装在基座构件的顶部上，并且形成有用于进入上腔室的多个孔。 空气过滤装置安装在上腔室中。 电动抽吸装置安装在下腔室中并且可操作以产生向下的空气流，用于吸引空气沿着桌面上方的方向流动到基座构件中，使得桌面上的木工废料可以被拉入底座 通过孔径构件，以便被空气过滤装置截留。