SELF-PROPELLED EXTRACTION SYSTEMS AND METHODS

• US 20090288685A1
• Filed: 04/07/2009
• Published: 11/26/2009
• Est. Priority Date: 09/14/2006
• Status: Abandoned Application

• Current Assignee: Nilfisk-Advance Incorporated (Nilfisk Holding A/S)
• Original Assignee: Nilfisk-Advance Incorporated (Nilfisk Holding A/S)
• Inventors: Wolfe, Kevin A., Bartholmey, Brett
• Application Number:
  US12/419,615
• Publication Number:
  US 20090288685A1
• Time in Patent Office: Days
• US Class Current: 134/21
• CPC Class Codes: A47L 7/0009 with means mounted on the nozzle; nozzles specially adapted for the recovery of liquid
• CPC Class Codes: A47L 9/009 Carrying-vehicles; Arrangements of trollies or wheels; Means for avoiding mechanical obstacles

Abstract

A system for applying a vacuum to a floor structure, a platform assembly for allowing a user to extract fluids from a floor structure, a system for extracting invasive liquids from a floor structure, a drive system for allowing a user standing on a platform assembly to displace the platform assembly along a floor surface, and/or A method of applying a vacuum to a floor structure.

Claims

1. A system for applying a vacuum to a floor structure, comprising:

a vacuum system for creating at least a partial vacuum;

a vacuum hose operatively connected to the vacuum system; and

a vacuum accessory comprising

a platform assembly comprising

at least one inlet opening directed to a portion of the floor structure, and

an outlet opening operatively connected to the vacuum hose; and

a drive system comprising a control member and first and second drive wheels;

whereby

displacement of the control member causes movement of the first and second drive wheels which in turn causes the platform assembly to move in at least one of a forward direction, a reverse direction, a first pivot direction, and a second pivot direction; and

as the platform assembly moves in at least one of a forward direction, a reverse direction, a first pivot direction, and a second pivot direction, the inlet opening moves along a path relative to the floor structure.

2. A system as recited in claim 1, in which the vacuum accessory further comprises:

an inlet assembly comprising

an inlet housing defining a housing chamber, where the inlet housing is supported by the deck structure,

an inlet pipe defining a pipe chamber and the outlet opening, where the inlet pipe is supported in a fixed position relative to the inlet housing, and

an inlet member defining a plurality of inlet openings, where the inlet member is supported in a fixed position relative to the inlet housing;

whereby

an inlet passageway extends through the inlet openings, the housing chamber, the pipe chamber, and the outlet opening to the vacuum hose; and

in a use mode, the first and second drive wheels and the inlet member are in contact with the floor structure.

3. A system as recited in claim 1, further comprising a handle assembly extending from the platform assembly, where the handle assembly supports the control member.

4. A system as recited in claim 1, in which:

the platform assembly further comprises at least one secondary wheel; and

in a transport mode, the at least one secondary wheel engages the floor surface to facilitate movement of the platform assembly along the floor surface.

5. A system as recited in claim 1, in which:

the first and second drive wheels are supported by the platform assembly such that the first and second drive wheels engage the floor surface; and

the control member is a joystick arranged such that the user standing on the platform assembly can displace the joystick in one or more of a forward direction, a reverse direction, a first side direction, and a second side direction;

whereby

displacement of the joystick in

the forward direction causes the platform assembly to move in the forward direction;

the reverse direction causes the platform assembly to move in the reverse direction;

the first side direction causes the platform assembly to move in the first pivot direction; and

the second side direction causes the platform assembly to move in the second pivot direction.

6. A platform assembly for allowing a user to extract fluids from a floor structure, comprising:

a deck structure defining a surface on which the user stands;

a frame structure supporting the deck structure and at least one drive wheel for propelling the platform assembly;

an inlet assembly comprising

an inlet housing defining a housing chamber, where the inlet housing is supported by the deck structure,

an inlet pipe defining a pipe chamber, where the inlet pipe is supported in a fixed position relative to the inlet housing, and

an inlet member defining a plurality of inlet openings, where the inlet member is supported in a fixed position relative to the inlet housing;

whereby

an inlet passageway extends through the inlet openings, the housing chamber, and the pipe chamber; and

in a use mode, the at least one drive wheel and the inlet member are in contact with the floor structure.

7. A platform assembly as recited in claim 6, in which the inlet assembly further comprises:

an inlet coupler, where the inlet coupler is supported in a fixed position relative to the inlet housing; and

an inlet bracket, where

the inlet coupler is supported in a fixed position relative to the inlet coupler, and

the inlet coupler supports the inlet member.

8. A platform assembly as recited in claim 7, in which the inlet coupler defines a plenum in fluid communication with the housing chamber and the inlet openings.

9. A platform assembly as recited in claim 7, in which the inlet bracket is supported in a fixed relationship with the frame structure.

10. A platform assembly as recited in claim 6, in which the inlet assembly further comprises an inlet support that maintains the inlet pipe in a fixed position relative to the inlet housing.

11. A system for extracting invasive liquids from a floor structure, comprising:

a platform assembly;

a handle assembly extending from the platform assembly;

a drive system comprising

first and second drive wheels supported by the platform assembly, and

a control member supported by the handle assembly;

whereby

displacement of the control member causes the first and second drive wheels to rotate to cause the platform assembly to move in at least one of a forward direction, a reverse direction, a first pivot direction, and a second pivot direction.

12. A system as recited in claim 11, in which the drive system further comprises control electronics, where the control electronics convert movement of the control member into movement of the first and second drive wheels.

13. A system as recited in claim 12, in which the drive system further comprises first and second drive motors, where the control electronics operate first and second drive motors.

14. A system as recited in claim 13, in which the drive system further comprises a transmission system operatively connected between the first and second drive motors and the first and second drive wheels.

15. A system as recited in claim 11, in which the control member is a joystick configured such that displacing the joystick forward causes the platform assembly to move in the forward direction, displacing the joystick in reverse causes the platform assembly to move in the reverse direction, displacing the joystick to a first side direction causes the platform assembly to move in the first pivot direction, and displacing the joystick to a second side direction causes the platform assembly to move in the second pivot direction.

16. A drive system for allowing a user standing on a platform assembly to displace the platform assembly along a floor surface, comprising:

at least first and second drive wheels supported by the platform assembly such that the first and second drive wheels engage the floor surface; and

a joystick arranged such that the user standing on the platform assembly can displace the joystick in one or more of a forward direction, a reverse direction, a first side direction, and a second side direction;

whereby

displacement of the joystick in

the forward direction causes the platform assembly to move in the forward direction;

the reverse direction causes the platform assembly to move in the reverse direction;

the first side direction causes the platform assembly to move in the first pivot direction; and

the second side direction causes the platform assembly to move in the second pivot direction.

17. A system as recited in claim 16, in which the drive system further comprises control electronics, where the control electronics convert movement of the joystick into movement of the first and second drive wheels.

20. A system as recited in claim 16, further comprising a handle assembly operatively connected to the platform assembly, where the handle assembly supports the joystick relative to the user standing on the platform assembly can displace the joystick.

18. A system as recited in claim 18, in which the drive system further comprises first and second drive motors, where the control electronics operate first and second drive motors.

19. A system as recited in claim 18, in which the drive system further comprises a transmission system operatively connected between the first and second drive motors and the first and second drive wheels.

21. A method of applying a vacuum to a floor structure, comprising the steps of:

providing a vacuum system for creating at least a partial vacuum;

providing a platform assembly defining

at least one inlet opening directed to a portion of the floor structure, and

an outlet opening; and

operatively connecting the vacuum hose to the vacuum system and the outlet opening;

providing a drive system comprising a control member and first and second drive wheels;

operatively connecting the control member and the first and second drive wheels such that displacing the control member causes rotation of the first and second drive wheels;

supporting the first and second wheels on the platform assembly and engaging the first and second wheels with the floor structure such that rotation of the first and second drive wheels causes the platform assembly to move in at least one of a forward direction, a reverse direction, a first pivot direction, and a second pivot direction; and

displacing the control member such that the platform assembly moves in at least one of a forward direction, a reverse direction, a first pivot direction, and a second pivot direction relative to the floor structure to cause the inlet opening to move along a path relative to the floor structure.

22. A method as recited in claim 21, further comprising the steps of:

providing an inlet assembly comprising an inlet housing defining a housing chamber, an inlet pipe defining a pipe chamber and the outlet opening, and an inlet member defining a plurality of inlet openings;

supporting the inlet housing on the platform assembly;

supporting the inlet pipe in a fixed position relative to the inlet housing;

supporting the inlet member in a fixed position relative to the inlet housing, where an inlet passageway extends through the inlet openings, the housing chamber, the pipe chamber, and the outlet opening to the vacuum hose; and

when the first and second drive wheels and the inlet member are in contact with the floor structure, operating the platform assembly in a use mode.

23. A method as recited in claim 21, further comprising the steps of:

providing a handle assembly;

arranging the handle assembly such that the handle assembly extends from the platform assembly; and

supporting control member on the handle assembly.

24. A method as recited in claim 21, further comprising the step of:

providing at least one secondary wheel;

operatively connecting the at least one secondary wheel assembly to the platform assembly; and

when the at least one secondary wheel engages the floor surface, operating the platform assembly in a transport mode to facilitate movement of the platform assembly along the floor surface.

25. A method as recited in claim 21, further comprising the steps of:

supporting the first and second drive wheels on the platform assembly such that the first and second drive wheels engage the floor surface;

providing a joystick to form the control member;

arranging the joystick such that the user standing on the platform assembly can displace the joystick in one or more of a forward direction, a reverse direction, a first side direction, and a second side direction;

whereby

displacement of the joystick in

the forward direction causes the platform assembly to move in the forward direction,

the reverse direction causes the platform assembly to move in the reverse direction,

the first side direction causes the platform assembly to move in the first pivot direction, and

the second side direction causes the platform assembly to move in the second pivot direction.