Squeegee assembly
AssigneeNilfisk-Advance, Inc.
InventorsDonald Joseph Legatt, Nick Graupe, Charles A. Cazett
Life of this patent
Estimating the term…
Abstract
A squeegee assembly (60) includes first and second protrusions (314) interconnected to a support (172) to which front and rear flexible blades (170a, 170b) are mounted. In preferred aspects, squeegee assembly (60) is of a curved design such that the flexible blades (170a, 170b) are spaced at the center of the support (172) where a suction tube (174) is provided and taper towards each other so that their ends are closely adjacent each other. The first and second protrusions (314) define upper and lower channel portions (324, 326) between the flexible blades (170a, 170b) so that appreciable reduction in the speed of air flow towards the suction tube (174) does not occur, which reduction may result in dropping of carried moisture.
Claims20
Squeegee assembly for wiping a surface, with the squeegee assembly comprising, in combination:
- a front flexible blade;
- a rear flexible blade, with each of the front and rear flexible blades including a free edge for contacting the surface and including first and second ends;
- a support upon which the front and rear flexible blades are mounted;
- and a suction tube provided in the support, with the suction tube extending between the front and rear flexible blades which are spaced by the support, with the support further including first and second protrusions each including a trailing surface and a lower surface, with the trailing surfaces being spaced from the rear flexible blade to define an upper channel portion having an upper extent, with the upper extent of the upper channel portion being vertically spaced from the free edges of the front and rear flexible blades greater than the lower surface, with the first and second protrusions located on opposite sides of the suction tube.
Dependencies are inferred from the claim text.