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US 9,038,237 B2Granted
Squeegee assembly
AssigneeNilfisk-Advance, Inc.
InventorDavid W. Wood
Life of this patent
Estimating the term…
Abstract
A squeegee assembly for wiping a surface comprises a front flexible blade having an outer surface, an inner surface and a floor engaging edge, a rear flexible blade having an outer surface, an inner surface and a wiping edge, a support upon which the front and rear flexible blades are mounted, a vacuumized chamber bounded by the front blade, rear blade, support, and the surface, and a suction tube coupled to the support and positioned between the front and rear flexible blades. The rear flexible blade includes at least one aperture extending between the outer surface and the inner surface and spaced from the wiping edge.
Claims16
A squeegee assembly for wiping a surface to be cleaned comprising:
- a front flexible blade having an outer surface, an inner surface, and a floor engaging edge, the front flexible blade including at least one slot formed in the floor engaging edge structured for the passage of fluid therethrough, the front flexible blade defining a first blade configuration;
- a rear flexible blade having outer surface open to an exterior of the squeegee assembly, an inner surface facing the front flexible blade, and a continuous wiping edge extending along a straight or curved line between a first end and a second end of the rear flexible blade, the rear flexible blade including at least one aperture extending from the outer surface to the inner surface, toward the front flexible blade and spaced from the wiping edge, the rear flexible blade defining a second blade configuration different than the first blade configuration;
- a support upon which the front and rear flexible blades are mounted, wherein a suction chamber is formed between the front flexible blade, the rear flexible blade, and a bottom surface of the support;
- and
- a suction tube in fluid communication with the suction chamber, wherein the at least one aperture in the rear flexible blade is structured for providing an airflow path through the rear flexible blade and into the suction tube.
2 more elements
A squeegee assembly for wiping a surface comprising:
- a front flexible blade including a first end, a second end, a lower edge, and at least one slot formed in the lower edge structured for the passage of fluid therethrough, the front flexible blade defining a first blade configuration;
- a rear flexible blade including a first end, a second end an outer surface open to an exterior of the squeegee assembly, an inner surface facing the front flexible blade, a continuous and linear wiping edge for contacting the surface, and at least one aperture extending through the rear flexible blade from the outer surface to the inner surface toward the front flexible blade, and spaced from the wiping edge, the rear flexible blade defining a second blade configuration different than the first blade configuration;
- a support upon which the front and rear flexible blades are mounted;
- and
- a suction tube provided in the support and positioned between the front and rear flexible blades;
- wherein the at least one aperture in the rear flexible blade is structured for providing an airflow path through the rear flexible blade and into the suction tube.
3 more elements
A squeegee assembly for wiping a surface comprising:
- a front blade including a first end, a second end, a lower edge, and first and second slots formed in the lower edge, the front blade defining a first blade configuration;
- a rear blade including a first end, a second end, an outer surface open to an exterior of the squeegee assembly, an inner surface facing the front blade, a wiping edge for contacting the surface and at least one aperture extending through the rear blade from the outer surface to the inner surface toward the front blade, the wiping edge being continuous and extending along a straight or curved line between the first end and the second end of the rear flexible blade, the rear blade defining a second blade configuration different than the first blade configuration;
- a support upon which the front and rear blades are mounted;
- and
- a suction tube provided in the support and positioned between the front and rear blades;
- wherein the first slot in the lower edge of the front blade is spaced from a center of the suction tube by a first distance, and wherein the second slot in the lower edge of the front blade is spaced from the center of the suction tube by a second distance that is different than the first distance such that an offset slot configuration is formed in the front blade and wherein the at least one aperture in the rear blade is structured for providing an airflow path through the rear flexible blade and into the suction tube.
3 more elements
Dependencies are inferred from the claim text.