Floor cleaning machine including squeegee assembly

• US 5,377,382 A
• Filed: 05/13/1993
• Issued: 01/03/1995
• Est. Priority Date: 05/13/1993
• Status: Expired due to Term

• Current Assignee: Karcher North America Incorporated (Alfred Kärcher SE & Co. KG)
• Original Assignee: Windsor Industries Incorporated (Alfred Kärcher SE & Co. KG)
• Inventors: Plaven, Thomas G., Bores, Frederick M.
• Primary Examiner(s): Moore, Chris K.
• Application Number:
  US08/060,874
• Time in Patent Office: 600 Days
• Field of Search: 15/320, 15/401, 15/245, 15/98, 15/304.1
• US Class Current: 15/340.1
• CPC Class Codes: A47L 11/4044 Vacuuming or pick-up tools; Squeegees

Abstract

A cleaning machine for cleaning floor surfaces is disclosed characterized by a squeegee blade assembly that utilizes a number of connectors for dual functions. The squeegee blade assembly includes a holding subassembly for maintaining the squeegee blades in place. A plurality of connectors are used to connect the squeegee blades to the squeegee holding subassembly. A first set of these connectors also connects the squeegee holding subassembly to a squeegee mounting assembly, which is attached to the body of the cleaning machine. A second set of these connectors is also used to connect rollers to the holding subassembly. A third set of these connectors also attaches a caster assembly to the holding subassembly. Each squeegee blade is an integral, one-piece member but with an upper section having a greater hardness than the lower section.

Claims

1. A cleaning machine for use in cleaning a surface, comprising:

a housing unit for containing a number of cleaning machine components;

a cleaning assembly connected to said housing unit for cleaning a path on a floor surface;

machine moving means for use in moving said housing unit and said cleaning assembly;

a squeegee mounting assembly connected to said housing unit;

a squeegee assembly separate from but connected to said squeegee mounting assembly for wiping up liquid on the floor surface, said squeegee assembly including;

(1A) squeegee blade means for collecting liquid from the floor surface, and

(1B) a blade holding subassembly;

said squeegee blade means including at least a first squeegee blade having upper and lower sections, said lower section including a laterally extending edge for contacting the floor surface when collecting liquid, said upper surface joined to said lower section above said laterally extending edge, wherein said blade holding subassembly fixedly holds said upper section of said first squeegee blade in place, said blade holding subassembly including a plurality of connectors positioned through portions of said blade holding subassembly, each of said plurality of connectors being for holding said first squeegee blade, and wherein said plurality of connectors includes roller connectors for connecting rollers, located adjacent to ends of said holding subassembly, to said blade holding subassembly.

2. A machine, as claimed in claim 1, wherein:

said squeegee blade means includes a second squeegee blade, separate from said first squeegee blade, with each of said first and second squeegee blades having a generally L-shaped lateral cross-section.

3. A machine, as claimed in claim 1, wherein:

said holding subassembly includes a first contacting shoe and a second contacting shoe, said upper section of said first squeegee blade includes first and second members, with said first member being at an angle relative to said second member.

4. A machine, as claimed in claim 1, wherein:

a first compressive force, supplied by an engagement of at least a first connector of said plurality of connectors with said holding subassembly, acts on said first squeegee blade to maintain said first squeegee blade in position, said first compressive force being in a direction substantially parallel to a length of said first connector.

5. A machine, as claimed in claim 4 wherein:

a second compressive force acts on said first squeegee blade in a direction substantially perpendicular to said length of said first connector, said second compressive force supplied by fitting said first squeegee blade between a first contacting shoe means and a second contacting shoe means such that said first and second contacting shoe means fixedly hold said upper section of said first squeeze blade in place.

6. A machine, as claimed in claim 1, wherein:

said squeegee blade means includes a separate second squeegee blades with said second squeegee blade also having an upper section held substantially fixed in place using said holding subassembly, said second squeegee blade also having a lower section to which said upper section of said second squeegee blade is joined, said lower section of said second squeegee blade extending outwardly from said upper section of said second squeegee blade, at least one of said upper sections of said first and second squeegee blades being a first upper section wherein said first upper section is made of a material having a hardness different from said lower section to which said first upper section is joined, wherein said first upper section is more hard than said lower section to which said first upper section is joined.

7. A machine, as claimed in claim 6, wherein:

said first upper section has a durometer value of about shore A 90 and said lower section to which said first upper section is joined has a durometer value of about shore A 40.

8. A machine, as claimed in claim 7, wherein:

said first upper section and said lower section to which said first upper section is joined are integrally formed as a single piece member.

9. A machine, as claimed in claim 1, wherein:

said holding subassembly includes a first contacting shoe and a second contacting shoe, said first contacting shoe has a base plate and first and second legs connected to opposite edges of said base plate, said second contacting shoe has a center section and first and second arms connected to opposite edges of said center section, wherein a horizontal member of said upper section of said first squeegee blade is clamped between said base plate and said center section.

10. A machine, as claimed in claim 9, wherein:

a space is defined between said base plate and said center section with at least some of said space being occupied by said horizontal member of said squeegee blade means.

11. A machine, as claimed in claim 1, wherein:

said holding subassembly includes a first contacting shoe and a second contacting shoe, said second contacting shoe being located inwardly relative to said first contacting shoe, said second contacting shoe comprising a center section having at least a first bore therethrough, with portions of said upper section of said first squeegee blade contacting said center section and said portions being adjacent to said first bore.

12. A machine, as claimed in claim 11, wherein:

said holding subassembly includes a first fastener joined to said center section and axially aligned with said first bore, said first fastener receiving a first of said connectors for use in clamping said portions of said first squeegee blade to said center section and also for connecting said squeegee mounting assembly to said holding subassembly.

13. A machine, as claimed in claim 11, wherein:

said first contacting shoe includes a base plate having at least a first hole, said first hole being aligned with said first bore, wherein said first connector is connected to said squeegee mounting assembly while being positioned through said first hole and said first bore.

14. A machine, as claimed in claim 1, wherein:

said squeegee mounting assembly includes a bracket body having a flange and a web and overlying said holding subassembly.

15. A cleaning machine for use in cleaning a surface, comprising:

a housing unit for containing a number of cleaning machine components;

a cleaning assembly connected to said housing unit for cleaning a path on a floor surface;

machine moving means for use in moving said housing unit and said cleaning assembly;

a squeegee mounting assembly connected to said housing unit;

a squeegee assembly separate from but connected to said squeegee mounting assembly for wiping up liquid on the floor surface, said squeegee assembly including;

(1A) squeegee blade means for collecting liquid from the floor surface, and

(1B) a blade holding subassembly;

said squeegee blade means including at least a first squeegee blade having upper and lower sections, said lower section including a laterally extending edge for contacting the floor surface when collecting liquid, said upper section joined to said lower section above said laterally extending edge, wherein said blade holding subassembly fixedly holds said upper section of said first squeegee blade in place, said blade holding subassembly including a plurality of connectors positioned through portions of said blade holding subassembly, each of said plurality of connectors being for holding said first squeegee blade, and wherein said plurality of connectors includes a connector for connecting a caster assembly to said blade holding subassembly.

16. A cleaning machine for use in cleaning a surface, comprising:

a housing unit for containing a number of cleaning machine components;

a cleaning assembly connected to said housing unit for cleaning a path on a floor surface;

machine moving means for use in moving said housing unit and said cleaning assembly;

a squeegee mounting assembly connected to said housing unit;

a squeegee assembly separate from but connected to said squeegee mounting assembly for wiping up liquid on the floor surface, said squeegee assembly including;

(1A) squeegee blade means for collecting liquid from the floor surface, and

(2B) a blade holding subassembly;

said squeegee blade means including at least a first squeegee blade having upper and lower sections, said lower section including a laterally extending edge for contacting the floor surface when collecting liquid, said upper section joined to said lower section above said laterally extending edge, wherein said blade holding subassembly fixedly holds said upper section of said first squeegee blade in place, said blade holding subassembly including a plurality of connectors positioned through portions of said blade holding subassembly, each of said plurality of connectors being for holding said first squeegee blade, and wherein said plurality of connectors includes a connector for connecting said squeegee mounting assembly to said blade holding subassembly.