SURFACE MAINTENANCE MACHINE WITH AN AUXILIARY WASTE REMOVAL SYSTEM

• US 20170224184A1
• Filed: 02/01/2017
• Published: 08/10/2017
• Est. Priority Date: 02/05/2016
• Status: Active Grant

• Current Assignee: Tennant Company
• Original Assignee: Tennant Company
• Inventors: Runnoe, Adam, Dancs, Justin I., Weatherly, Erik M., Jensen, Laurence A.
• Granted Patent: US 10,470,637 B2
• Time in Patent Office: Days
• CPC Class Codes: A47L 11/4011 Regulation of the cleaning machine by electric means; Control systems and remote control systems therefor
• CPC Class Codes: A47L 11/4013 Contaminants collecting devices, i.e. hoppers, tanks or the like
• CPC Class Codes: A47L 11/4044 Vacuuming or pick-up tools; Squeegees
• CPC Class Codes: E01H 1/0827 Dislodging by suction; Mechanical dislodging-cleaning apparatus with independent or dependent exhaust, e.g. dislodging-sweeping machines with independent suction nozzles combined with blowing E01H1/0872; Mechanical loosening devices working under vacuum
• CPC Class Codes: E01H 1/0845 with mechanical loosening or feeding instruments for the dirt to be sucked- up, e.g. brushes, scrapers brushing installations per se E01H1/02; other loosening devices per se E01H1/105

Abstract

An auxiliary waste removal system for a surface maintenance machine, having a vacuum wand for removing waste from the floor surface, a reusable bagless waste collection container removably coupled to the vacuum wand, and a vacuum source fluidly coupled to the bagless waste collection container, the vacuum source generating a vacuum flow from an inlet of the vacuum wand to a vacuum outlet, the vacuum outlet being positioned downstream of the bagless waste collection container and the vacuum source such that the waste suctioned from the floor surface by the vacuum wand travels along the vacuum flow path and is directly received in the bagless waste collection container.

Claims

1. A surface maintenance machine comprising:

a body;

a plurality of wheels;

a maintenance head assembly extending from an underside of the frame comprising one or more surface maintenance tools for performing a floor surface maintenance operation;

a primary waste removal system adapted to remove waste generated from the floor surface maintenance operation; and

an auxiliary waste removal system comprising,

a vacuum wand,

a bagless waste collection container fluidly coupled to the vacuum wand, and

a vacuum source fluidly coupled to the bagless waste collection container, the vacuum source generating a vacuum flow from an inlet of the vacuum wand toward an exhaust port, the exhaust port being located interior to the body of the machine.

2. The surface maintenance machine of claim 1, further comprising a power enclosure within the interior body of the machine, the power enclosure housing a main power source for providing power to the plurality of wheels to drive the machine on a floor surface, the exhaust port being located within the power enclosure.

3. The surface maintenance machine of claim 2, wherein the bagless waste collection container is elongate in shape disposed about a longitudinal centerline, an inlet of the vacuum source is positioned to be offset from the longitudinal centerline of the bagless waste collection container and/or perpendicular to the longitudinal centerline of the bagless waste collection container.

4. The surface maintenance machine of claim 2, wherein the vacuum wand comprises a first end and a second end opposite to the first end, the first end being proximal to the floor surface and the second end being operatively coupled to the bagless waste collection container.

5. The surface maintenance machine of claim 4, further comprising a holster operatively coupled to the body of the surface maintenance machine, the vacuum wand being movable between a transport position and an operating position, wherein, in the transport position, the vacuum wand is held in the holster, and in the operating position, the vacuum wand is removed from the holster and moved proximal to the floor surface.

6. The surface maintenance machine of claim 5, further comprising a contact switch adapted to trigger the vacuum source to begin generating vacuum flow, such that vacuum is maintained in the vacuum wand, wherein, the contact switch is a proximity switch.

7. The surface maintenance machine of claim 6, wherein the contact switch is configured to perform at least of the following:

trigger the vacuum source to maintain vacuum in the vacuum wand in the operating position;

shuts off the vacuum source to stop generating vacuum flow when in the transport position.

8. The surface maintenance machine of claim 6, further comprising, a master switch configured to be actuable to override the contact switch, wherein

actuating the master switch activates the contact switch such that the contact switch triggers the vacuum source to maintain vacuum in the vacuum wand in the operating position and the contact switch shuts off the vacuum source to stop generating vacuum flow in the transport position;

and

deactivating the master switch disables the contact switch such that the vacuum source is not activated when the vacuum wand is in the operating position.

9. The surface maintenance machine of claim 8, wherein the master switch is positioned on the auxiliary waste removal system and/or to the rear of a transverse centerline of the surface maintenance machine.

10. The surface maintenance machine of claim 9, further comprising an operator cab positioned to the front of the transverse centerline, the operator cab adapted to house an operator, wherein the master switch is positioned to the rear of the operator cab.

11. An auxiliary waste removal system for a surface maintenance machine, comprising,

a bagless waste collection container disposed about a longitudinal centerline;

and

a vacuum source fluidly coupled to the bagless waste collection container, the vacuum source generating a vacuum flow path defined from a bagless waste collection container inlet to a bagless waste collection container outlet, such that the waste suctioned from a floor surface travels along the vacuum flow path and is directly received in the bagless waste collection container,

the bagless waste collection container inlet being in-line with the longitudinal centerline of the bagless waste collection container, and the bagless waste collection container outlet being offset from the longitudinal centerline of the bagless waste collection container.

12. The auxiliary waste removal system of claim 11, further comprising a filtration system located downstream of both the bagless waste collection container inlet and the bagless waste collection container outlet, the filtration system being offset from the longitudinal centerline of the bagless waste collection container and/or located vertically above the bagless waste collection container.

13. The auxiliary waste removal system of claim 11, wherein a rotational axis of the vacuum source is perpendicular to the longitudinal centerline of the bagless waste collection container.

14. The auxiliary waste removal system of claim 12, wherein the bagless waste collection container has an elongate shape with a top wall, side walls perpendicular to the top wall, and a bottom wall opposite to the top wall, the inlet of the bagless waste collection container being positioned on a side wall, and the filtration system is positioned above the top wall, and wherein at least a portion of side walls and the top wall of the bagless waste collection container have perforations.

15. The auxiliary waste removal system of claim 14, wherein the longitudinal centerline passes through the side walls of the bagless waste collection container to divide the bagless waste collection container into an upper half and a lower half, wherein the upper half of the side walls have perforations, the perforations forming at least part of the bagless waste collection container outlet.

16. The auxiliary waste removal system of claim 15, wherein an entirety of the top wall has perforations.

17. The auxiliary waste removal system of claim 11, wherein the bagless waste collection container is removable from the auxiliary waste removal system and/or the bagless waste collection container is reusable.

18. An auxiliary waste removal system for a surface maintenance machine, comprising,

a waste collection container;

and

a vacuum source fluidly coupled to the waste collection container, the vacuum source generating a vacuum flow path defined from a waste collection container inlet to a waste collection container outlet, such that the waste suctioned from a floor surface travels along the vacuum flow path and is directly received in the waste collection container; and

a vacuum wand fluidly coupled to and upstream of the waste collection container inlet, the vacuum wand being supported by a telescoping spine configured to be collapsible or extensible, such that the vacuum wand collapses or extends with the telescoping spine.

19. The auxiliary waste removal system of claim 18, wherein the vacuum wand is flexible relative to the waste collection container.

20. The auxiliary waste removal system of claim 18, the vacuum wand comprises a flexible hose and the telescoping spine is rigid relative to the vacuum wand, the flexible hose and the telescoping spine each having a longitudinal axis, the longitudinal axis of the flexible hose being offset from the longitudinal axis of the telescoping spine.

21. The auxiliary waste removal system of claim 20, wherein a cross-sectional area of the telescoping spine is less than a cross-sectional area of the flexible hose.

22. The auxiliary waste removal system of claim 20, wherein the entirety of the telescoping spine is positioned exterior to the flexible hose.

23. The auxiliary waste removal system of claim 20, wherein the telescoping spine is connected to the exterior of the flexible hose.