초록 ▼

A sweeping machine includes a housing, wheels for moving the housing and a sweeping brush mounted on the housing. There is a hopper positioned adjacent the brush to receive dust and debris from the rotating brush. A dust collection chamber is located on the housing and a vacuum fan mounted on the ho

A sweeping machine includes a housing, wheels for moving the housing and a sweeping brush mounted on the housing. There is a hopper positioned adjacent the brush to receive dust and debris from the rotating brush. A dust collection chamber is located on the housing and a vacuum fan mounted on the housing creates an air flow path from the brush through the hopper into the dust collection chamber. A filter element is positioned in the air flow path with the filter element including a plurality of generally parallel pleats extending in a direction transverse to the air flow path. There is a plurality of electric coils positioned adjacent the pleats. A plurality of metal elements are associated with the pleats. Pulsed electric power is applied to the coils with the electromagnetic fields caused thereby moving the metal elements reciprocally back and forth and the pleats associated therewith to impart a shaking, cleaning movement to the pleats.

대표청구항 ▼

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] A sweeping machine including a housing, wheels for moving the housing, a sweeping brush mounted on the housing, a hopper positioned adjacent the brush to receive dust and debris th

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] A sweeping machine including a housing, wheels for moving the housing, a sweeping brush mounted on the housing, a hopper positioned adjacent the brush to receive dust and debris therefrom, a dust collection chamber on the housing, a vacuum fan mounted on the housing and creating an air flow path from the brush through the hopper and to the dust collection chamber, a filter element in said air flow path, said filter element including a plurality of generally parallel pleats extending in a direction transverse to the air flow path, a plurality of electric coils positioned adjacent said pleats, a plurality of metal elements associated with said pleats, and means for applying pulsed electric power to said electric coils, with the electromagnetic fields caused thereby moving said metal elements and the pleats associated therewith to impart a shaking cleaning movement to said pleats.