US 2012/0266407 A1 · Double-Walled Vacuum Cleaner

Abstract

A new drum vacuum cleaner has a 0.02 to 0.035 inch thick stainless steel wall that that substantially surrounds a molded inner tank that extends downwardly from a tank collar. The lower end of the wall is positioned between an inward-facing edge of a recess on a wheeled base and an outward-facing edge on the molded inner tank, and is supported on a supporting face on the base that also supports the tank. The upper end of the wall is positioned within a downward-opening slot in the tank collar. When the molded inner tank is connected to the base, the metal wall is trapped in place between the tank collar and the base, providing an exposed stainless steel section that is at least three inches in height and can extend to within less than 1″ of the vacuum cleaner head.

Claims20

Dependent claims

A vacuum cleaner that has:

a base that rolls;
a tank section that is carried by the base;
a vacuum head that is removably attached to an upper part of the tank section;
a molded inner tank that forms a lower part of the tank section and connects to the base;
a vacuum source that is connected to the vacuum head and is in fluid communication with a reservoir within the molded inner tank;
a vacuum inlet that is in fluid communication with the vacuum source;
an exhaust outlet that is in fluid communication with the vacuum source;
a tank collar that extends radially outwardly from the molded inner tank;
and
a metal wall that has a thickness of between 0.02 and 0.035 inches, substantially surrounds the molded inner tank, has an upper edge that fits against the tank collar, has a lower edge that fits within a recess in the base, and is trapped in place between the tank collar and the base when the molded inner tank is connected to the base.

7 more elements

A vacuum cleaner that has:

a base that rolls;
a tank section that is carried by the base;
a vacuum head that is removably attached to an upper part of the tank section;
a molded inner tank that forms a lower part of the tank section and connects to the base;
a vacuum source that is connected to the vacuum head and is in fluid communication with a reservoir within the molded inner tank;
a vacuum inlet that is in fluid communication with the vacuum source;
an exhaust outlet that is in fluid communication with the vacuum source;
a tank collar that has an upper rim;
and
an exposed stainless steel section that is visible to view by purchasers and users when the vacuum cleaner is fully assembled, substantially surrounds the molded inner tank, has an upper boundary that extends to within less than 1″ of the vacuum head, has a concavity that partially surrounds the vacuum inlet, and has a lower boundary that adjoins the base.

7 more elements

Dependencies are inferred from the claim text.

Double-Walled Vacuum Cleaner

Life of this patent

Double-Walled Vacuum Cleaner

Life of this patent

Abstract

Claims20