Floor cleaning machine with dust control apparatus and associate method of use

• US 7,162,771 B2
• Filed: 05/05/2003
• Issued: 01/16/2007
• Est. Priority Date: 05/05/2003
• Status: Expired due to Fees

• Current Assignee: Nilfisk-Advance Incorporated (Nilfisk Holding A/S)
• Original Assignee: ALTO US Incorporated (ALTO U.S.)
• Inventors: Obenshain, John L., Petty, John Stephen, Grosze, Scott F.
• Primary Examiner(s): Snider; Theresa T.
• Application Number:
  US10/249,741
• Publication Number:
  US 20040221417A1
• Time in Patent Office: 1,352 Days
• Field of Search: 153/85, 15/491, 15/98, 153/25, 153/47, 153/49, 154/09, 152/462, 451/453, 451/119, 451/456
• US Class Current: 15/385
• CPC Class Codes: A47L 11/20 combined with vacuum cleaning devices
• CPC Class Codes: A47L 11/4036 Parts or details of the surface treating tools
• CPC Class Codes: A47L 11/4086 Arrangements for steam generation
• CPC Class Codes: B24B 55/10 specially designed for portable grinding machines, e.g. hand-guided
• CPC Class Codes: B24B 7/186 with disc-type tools

Abstract

A floor cleaning machine with dust control apparatus can assist in capturing dust created as a by-product during normal operations. The dust control apparatus is particularly applicable to propane-powered burnishers that use rotating pads to remove built up wax from hard surface floors. A floating scoop is attached to a floating hoop assembly to direct dust away from the rotating pad. The scoop is located tangentially to the housing that surrounds the rotating pad. An inlet to the housing facilitates airflow through the housing to pick up dust, which exits through the scoop. A containment canister with removable filter is in communication with the scoop. The air and entrained particulate (dust) swirls around the filter in a circular flow path to help separate the particulate from the air. The filtered air exits the canister and returns to the atmosphere.

Claims

1. A floor cleaning machine with dust control apparatus, the floor cleaning machine creating dust as a by-product of normal operations, the floor cleaning machine comprising:

an engine mounted on a frame supported by a wheel, the engine operatively connected to a rotatable pad driver that is capable of attaching a pad thereto, wherein the pad is capable of contacting a floor;

a rigid housing surrounding the pad driver and pad, the housing having a sidewall, which is substantially vertical;

an air outlet in the sidewall located at least partially opposite the rotatable pad driver that receives radially projected dust;

a dust collection mechanism to receive at least a portion of the dust from the air outlet via an air conduit; and

a floating hoop assembly with a flexible skirt that extends from the sidewall of the rigid housing to a floating circular hoop and felt follower in contact with the floor to assist in containment of at least a portion of the dust created during operation of the floor cleaning machine.

2. The floor cleaning machine with dust control apparatus of claim 1, wherein the dust collection mechanism includes a container mounted on the floor cleaning machine.

3. A floor cleaning machine with dust control apparatus, the floor cleaning machine creating dust as a by-product of normal operations, the floor cleaning machine comprising:

an engine operatively connected to a rotatable pad driver that is capable of attaching a pad thereto, wherein the pad is capable of contacting a floor;

a housing surrounding the pad driver and pad, the housing having a sidewall, which is substantially vertical;

an air outlet in the sidewall located at least partially opposite the rotatable pad driver that receives radially projected dust;

a dust collection mechanism to receive at least a portion of the dust from the air outlet via an air conduit;

a floating hoop assembly that extends from the sidewall of the housing to the floor to assist in containment of at least a portion of the dust created during operation of the floor cleaning machine; and

a floating scoop connected to a portion of the floating hoop assembly.

4. The floor cleaning machine with dust control apparatus of claim 3, further including a throat in fluid communication with the floating scoop to direct at least a portion of the dust away from the pad by creating a suction utilizing a venturi-effect.

5. A floor cleaning machine with dust control apparatus, the floor cleaning machine creating dust as a by-product of normal operations, the floor cleaning machine comprising:

an engine operatively connected to a rotatable pad driver that is capable of attaching a pad thereto, wherein the pad is capable of contacting a floor;

a housing surrounding the pad driver and pad, the housing having a sidewall;

a floating hoop assembly that extends from the sidewall of the housing to the floor to assist in containment of at least a portion of the dust created during operation of the floor cleaning machine;

a floating scoop connected to a portion of the floating hoop assembly, the scoop and the hoop assembly capable of moving up and down in tandem, the scoop directing at least a portion of the dust away from the pad;

a throat in fluid communication with the floating scoop to direct at least a portion of the dust away from the pad; and

a circular canister mounted on the floor cleaning machine, the canister in communication with the throat to receive and assist in containment of at least a portion of the dust.

6. The floor cleaning machine with dust control apparatus of claim 5, further including a removable circular filter positioned in the canister to assist in containment of at least a portion of the dust.

7. The floor cleaning machine with dust control apparatus of claim 5, wherein an upper flow passageway is defined by the pad driver and the housing and a circumferential flow passageway is defined by an outer edge of the pad and the floating hoop assembly and the floor.

8. The floor cleaning machine with dust control apparatus of claim 7, wherein the sidewall of the housing further defines an air inlet to allow ambient air to pass from an outside of the housing into the upper flow passageway and wherein the floating scoop defines an outlet for the air and dust, the floating scoop being in communication with both the upper flow passageway and the circumferential flow passageway.

9. The floor cleaning machine with dust control apparatus of claim 8, wherein at least a portion of the floating scoop and outlet are positioned generally tangential to the circumferential flow passageway.

10. The floor cleaning machine with dust control apparatus of claim 8, wherein the canister is circular and the throat is positioned generally tangential to the canister causing the air and dust to swirl in a generally circular flow path in the canister to encourage at least a portion of the dust to fall to a valley in a bottom of the canister.

11. A dust control apparatus for use with a floor cleaning machine capable of utilizing a rotatable pad that can contact a floor and creates a stream of air and entrained particulate during normal operation, the rotatable pad is enclosed by a generally circular housing having a sidewall, the dust control apparatus comprising:

a floating hoop assembly that extends from the sidewall of the housing to the floor to assist in containment of the entrained particulate created during operation of the floor cleaning machine;

a floating scoop connected to a portion of the floating hoop assembly, the scoop and the hoop assembly moving up and down in tandem, the scoop directing at least a portion of the entrained particulate away from the pad;

a throat rigidly connected to the floor cleaning machine, the throat in communication with the floating scoop to direct at least a portion of the entrained particulate away from the pad;

a flexible boot connecting the floating scoop to the throat; and

a separator with a removable filter mounted on the floor cleaning machine, the separator in communication with the throat to receive and assist in containment of the entrained particulate.

12. The dust control apparatus for use with a floor cleaning machine of claim 11, wherein the separator is generally circular and the throat is located generally tangential to the separator causing the stream of air and entrained particulate to circulate in a circular motion about the filter.

13. The dust control apparatus for use with a floor cleaning machine of claim 12, further including a valley in a bottom of the separator, the valley being located below the filter to provide a receptacle for particulate that separates from the stream of air.

14. An after-market dust control apparatus for attachment to a floor cleaning machine that creates dust during normal operations, the machine capable of utilizing a circular pad that contacts the floor and creates a positive air flow while the pad is rotated, the pad surrounded by a housing with a sidewall, the after-market dust control apparatus comprising:

a floating hoop assembly that extends from the sidewall of the housing to the floor to assist in containment of the dust created during operation of the floor cleaning machine

a floating scoop connected to a portion of the floating hoop assembly that moves up and down in tandem with the hoop assembly, the scoop directing at least a portion of the dust away from the pad;

an attachment mechanism that connects the floating hoop assembly to the housing;

a throat in communication with the floating scoop to direct at least a portion of the dust away from the pad; and

a containment canister connected to the floor cleaning machine, the canister in communication with the throat to receive and contain at least a portion of the dust.

15. The after-market dust control apparatus for attachment to a floor cleaning machine of claim 14, further including a removable filter positioned in the contaimnent canister to assist in separation of the dust from the air flow created by the operation of the floor cleaning machine.

16. The after-market dust control apparatus for attachment to a floor cleaning machine of claim 15, wherein the contaimnent canister is generally circular and the throat is located generally tangential to the containment canister causing the air and dust to swirl in a generally circular flow path in the containment canister to encourage the dust to fall to a valley in a bottom of the containment canister.

17. An after-market dust control apparatus for attachment to a floor cleaning machine having a pad driver that is capable of utilizing a rotatable pad that contacts the floor and creates a stream of air and entrained particulate during operations, the pad enclosed by a generally circular housing with a sidewall, the after-market dust control apparatus comprising:

a floating hoop assembly that extends from the sidewall of the housing to the floor to contain at least a portion of the stream of air and entrained particulate created during operation of the floor cleaning machine;

a floating scoop connected to a portion of the floating hoop assembly, the scoop and the hoop assembly moving up and down in tandem, the scoop containing and directing at least a portion of the stream of air and entrained particulate away from the pad driver;

an attachment mechanism that connects the floating hoop assembly and floating scoop to the housing;

a throat containing and directing the stream of air and entrained particulate away from the pad driver; and

a separator with a removable filter, the separator in communication with the throat to receive the stream of air and entrained particulate and separate at least a portion of the particulate from the air.

18. The after-market dust control apparatus for attachment to a floor cleaning machine of claim 17, wherein the separator is generally circular and the throat is positioned generally tangential to the separator causing the air and dust to swirl in a generally circular flow path in the separator to encourage the dust to fall to a valley in a bottom of the separator.

19. A propane-powered burnisher with dust control apparatus, the propane-powered burnisher creating dust as a by-product of normal operations, the propane-powered burnisher comprising:

a propane-powered engine operatively connected by a belt to a rotating pad driver and rotating pad in contact with the floor;

a housing surrounding the pad driver and pad, the housing having a top and a sidewall;

a floating hoop assembly that extends from the sidewall of the housing to the floor to assist in containment of at least a portion of the dust created during operation of the propane-powered burnisher;

a floating scoop connected to the floating hoop assembly, the scoop and the hoop assembly moving up and down in tandem, the scoop directing at least a portion of the dust away from the pad;

a throat rigidly connected to the propane-powered burnisher, the throat in communication with the floating scoop to direct at least a portion of the dust away from the pad;

a flexible boot connecting the floating scoop to the non-floating throat;

a circular canister mounted on the propane-powered burnisher, the canister in communication with the throat to receive and assist in containment of the dust;

an upper flow passageway defined by the pad driver and the top and sidewall of the housing;

a circumferential flow passageway defined by an outer edge of the pad and a portion of the floating hoop assembly;

an inlet formed in the sidewall of the housing to allow ambient air to pass from an outside of the housing into the upper flow passageway; and

an outlet formed in the scoop for the air and dust, the outlet being in communication with both the upper flow passageway and the circumferential flow passageway.

20. The propane-powered burnisher with dust control apparatus of claim 19, further including:

a removable filter positioned in the canister to assist in containment of the dust created by operation of the burnisher.

21. The apparatus of claim 19, wherein the canister is generally circular and the throat is located generally tangential to the canister causing the air and dust to swirl in a generally circular flow path in the canister to encourage at least a portion of the dust to fall to a valley in a bottom of the canister.

22. A method for utilizing a floor cleaning machine that creates dust as a by-product of normal operations with dust control apparatus, the method comprising:

rotating a pad driver with an engine rigidly mounted on a frame, wherein the pad driver is capable of attaching a pad thereto, wherein the pad is capable of contacting a floor;

removing air, having radially projected dust, through an air outlet located in a sidewall, which is substantially vertical, from a rigid housing surrounding the pad driver and pad, wherein the air outlet in the sidewall is located at least partially opposite the rotatable pad driver;

containing air and dust with a floating hoop assembly with a flexible skirt that extends from the sidewall of the rigid housing to a floating circular hoop and felt follower in contact with the floor to assist in containment of at least a portion of the dust created during operation of the floor cleaning machine; and

conveying at least a portion of the dust from the air outlet via an air conduit to a dust collection mechanism.