Squeegee assembly

• US 8,166,606 B2
• Filed: 02/06/2007
• Issued: 05/01/2012
• Est. Priority Date: 02/07/2006
• Status: Expired due to Fees

• Current Assignee: Nilfisk-Advance Incorporated (Nilfisk Holding A/S)
• Original Assignee: Nilfisk-Advance Incorporated (Nilfisk Holding A/S)
• Inventors: Johnson, Kale R., Johnson, Everett Eugene
• Primary Examiner(s): Muller, Bryan R
• Application Number:
  US12/295,383
• Publication Number:
  US 20090113666A1
• Time in Patent Office: 1,911 Days
• Field of Search: 154/01, 153401-3403, 151/17, 151/21, 152/45, 152/504.8, 152/504.52
• US Class Current: 15/250.452
• CPC Class Codes: A47L 11/30 by suction
• CPC Class Codes: A47L 11/4044 Vacuuming or pick-up tools; Squeegees
• CPC Class Codes: A47L 11/4058 for adjusting the height of the tool

Abstract

A squeegee assembly (10, 10′) includes a flexible wiper blade (30) sandwiched between a mounting bracket (32, 32′) and a retaining strap (34, 34′). A retainer (94) has a head (98) which is positionable between aligned and misaligned positions with mounting apertures (82, 92) to allow disassembly, assembly and retention of the squeegee assembly (10, 10′). Arcuate portions (36, 36′, 66, 66′) formed in the mounting bracket (32, 32′) and the retaining straps (34, 34′) have different radiuses. Linear portions (68, 68′, 70, 70′) of the retaining straps (34, 34′) have upper and lower edges (72, 74) bent from center portions thereof. The mounting brackets (32, 32′) include L-shaped slots (46) for slideably receiving vertical bolts (56) of the floor maintenance machine (12).

Claims

1. A squeegee assembly comprising, in combination:

a flexible wiper blade;

a first retaining element;

a second retaining element, with the flexible wiper blade sandwiched between the first and second retaining elements; and

at least a first retainer, with the retainer including a shaft extending from the first retaining element and having an axis, with the retainer further including a head connected to the shaft and axially spaced from the first retaining element, with the shaft having cross sections perpendicular to the axis of the shaft, with the head having cross sections perpendicular to the axis of the shaft different than the cross sections of the shaft and having different radial extents than the cross sections of the shaft, with the flexible wiper blade including a mounting aperture having cross sections corresponding to and for slideable passage of the cross sections of the head, with the second retaining element having an upper edge, a lower edge and a center section, with the upper and lower edges being formed on a bent section having linear configuration, bent at an obtuse angle relative to the center section, the upper and lower edges abutting with the flexible wiper blade sandwiched between the first and second retaining elements and defining an abutment plane, with the center section having a linear configuration and being spaced from the abutment plane and from the flexible wiper blade, and the second retaining element including a mounting aperture formed in the center section and having cross sections corresponding to and for slideable passage of the cross sections of the head, with the mounting apertures of the flexible wiper blade and the second retaining element being aligned when the flexible wiper blade is sandwiched between the first and second retaining elements, with the shaft extending through the aligned mounting apertures, with the head being positionable relative to the second retaining element between a first position and a second position, with the head in the first position being aligned with the aligned mounting apertures allowing passage of the head through the aligned mounting apertures, with the head in the second position being misaligned with the aligned mounting apertures and abutting with the second retaining element around the mounting aperture of the second retaining element.

2. The squeegee assembly of claim 1 further comprising, in combination:

a locating pin, with the locating pin extending from one of the first and second retaining elements, with locating apertures formed in the flexible wiper blade and the other of the first and second retaining elements for slideably receiving the locating pin.

3. The squeegee assembly of claim 2 with the head being semicylindrical in shape and having an axially extending flat surface, with the shaft extending generally perpendicular to the axially extending flat surface.

4. The squeegee assembly of claim 3 with the first retaining element including a mounting bore, with the shaft rotatably received in the mounting bore, with the head being movable between the first and second positions by rotation of the shaft in the mounting bore.

5. The squeegee assembly of claim 4 with the shaft being threaded, and with the retainer further including a nut threadably received on the shaft, with the nut located on the opposite side of the first retaining element than the second retaining element, with the nut being T-shaped.

7. The squeegee assembly of claim 1 wherein each of the first and second retaining elements includes a leading end, a trailing end and an arcuate portion located intermediate the leading end and the trailing end, with the arcuate portions of the first and second retaining elements having unequal radiuses from a center, with the radius of the arcuate portion of the second retaining element being smaller than the radius of the arcuate portion of the first retaining element, with the first retaining element being intermediate the center and the second retaining element.

8. The squeegee assembly of claim 7 wherein each of the first and second retaining elements includes first and second linearly straight portions, with the first linearly straight portion extending from the leading end to the arcuate portion and the second portion extending from the trailing end to the arcuate portion.

9. The squeegee assembly of claim 8 wherein each of the first and second linearly straight portions of the second retaining element includes a free upper edge, a free lower edge and a center section, with the free upper and lower edges abutting with the flexible wiper blade sandwiched between the first and second retaining elements and defining an abutment plane, with the center section being spaced from the abutment plane and from the flexible wiper blade, with the mounting apertures formed in the center section.

10. The squeegee assembly of claim 8 wherein the arcuate portions of the first and second retaining elements have radiuses of 5% difference or less.

11. The squeegee assembly of claim 8 wherein the first retaining element comprises a mounting bracket removably attachable to a machine.

12. The squeegee assembly of claim 11 wherein the first retaining element includes first and second, spaced, L-shaped slots for slidably receiving a bolt carried by the machine.

13. The squeegee assembly of claim 8 wherein the second retaining element comprises a mounting bracket removably attachable to a machine.

14. The squeegee assembly of claim 1 with the head being semicylindrical in shape and having an axially extending flat surface, with the shaft extending generally perpendicular to the axially extending flat surface.

6. A squeegee assembly comprising, in combination:

a flexible wiper blade;

a first retaining element;

a second retaining element, with the flexible wiper blade sandwiched between the first and second retaining elements; and

at least a first retainer, with the retainer including a shaft extending from the first retaining element and having an axis, with the retainer further including a head connected to the shaft and axially spaced from the first retaining element, with the shaft having cross sections perpendicular to the axis of the shaft, with the head having cross sections perpendicular to the axis of the shaft different than the cross sections of the shaft and having different radial extents than the cross sections of the shaft, with the flexible wiper blade including a mounting aperture having cross sections corresponding to and for slideable passage of the cross sections of the head, with the first retaining element including first and second, spaced, L-shaped slots for slidably receiving a bolt carried by the machine, with each of the first and second L-shaped slots including a first leg and a second leg extending generally perpendicularly from the first leg at an interconnection, with the second leg including a protrusion into the L-shaped slot at the interconnection, with the second retaining element including a mounting aperture having cross sections corresponding to and for slideable passage of the cross sections of the head, with the mounting apertures of the flexible wiper blade and the second retaining element being aligned when the flexible wiper blade is sandwiched between the first and second retaining elements, with the shaft extending through the aligned mounting apertures, with the head being positionable relative to the second retaining element between a first position and a second position, with the head in the first position being aligned with the aligned mounting apertures allowing passage of the head through the aligned mounting apertures, with the head in the second position being misaligned with the aligned mounting apertures and abutting with the second retaining element around the mounting aperture of the second retaining element.