Cleaning tool

• US 3,992,747 A
• Filed: 04/09/1975
• Issued: 11/23/1976
• Est. Priority Date: 04/09/1975
• Status: Expired due to Term

• Current Assignee: Servicemaster Company LP The A de Limited Partnership
• Original Assignee: Service Master Industries Incorporated
• Inventors: Hufton, Austen B.
• Primary Examiner(s): Moore, Christopher K.
• Application Number:
  US05/566,253
• Time in Patent Office: 594 Days
• Field of Search: 15/320, 15/321, 15/322, 15/393, 15/401, 15/364, 15/369
• US Class Current: 15/321
• CPC Class Codes: A47L 11/30 by suction
• CPC Class Codes: A47L 11/4036 Parts or details of the surface treating tools
• CPC Class Codes: A47L 11/4044 Vacuuming or pick-up tools; Squeegees
• CPC Class Codes: A47L 11/4075 Handles; levers
• CPC Class Codes: A47L 11/4088 Supply pumps; Spraying devices; Supply conduits

Abstract

An improved tool is disclosed for cleaning hard surface floors. The tool includes a scrubbing block which is pivotally mounted on the lower end of a handle that may be manipulated by a person standing by the tool. A housing is mounted about the scrubbing block and is connected with the scrubbing block by leaf springs so as to permit the housing to "float" with respect to the scrubbing block. The housing includes a bottom surface and curved, generally transverse, front and rear channels that are disposed adjacent to the front and rear of the housing, that are open to the floor, and that are connected with a vacuum conduit. Squeegee blades are disposed in the channels and are carried therein by support members pivotally mounted on the housing. The support members include a plurality of depending feet which support the housing so that its bottom surface is above the floor to be cleaned. Links interconnect the ends of the support members whereby when the tool is moved in a forward direction, transverse to the channels, the lower edge of the squeegee blade in the front channel is disposed slightly above the floor while the lower edge of the squeegee blade in the rear channel is held in contact with the floor and whereby when the tool is moved in a rearward direction, transverse to the channels, the lower edge of the squeegee blade in the rear channel is disposed slightly above the floor while the lower edge of the squeegee blade in the front channel is held in contact with the floor.

Claims

1. An improved tool adapted for cleaning a hard surface floor and the like, comprising:

housing means having a front edge, a rear edge, and a bottom portion which is adapted to be positioned so as to face the floor to be cleaned;

a scrubbing block having a bottom scrubbing surface which is adapted to be positioned in surface-to-surface contact with the floor to be cleaned;

handle means having a lower end which is connected with the scrubbing block so that back and forth movement of the handle may cause corresponding back and forth movement of the scrubbing block along and over the floor to be cleaned;

means for connecting the scrubbing block with the housing means, said connection means including spring means which permit limited relative movement between the housing means and the scrubbing block;

means carried by the housing means for discharging fluid onto the floor to be cleaned;

vacuum conduit means, having one end adapted to be connected with a source of vacuum;

fluid conduit means having one end adapted to be connected with the fluid discharging means and having its other end connected with a source of fluid; and

the housing means including means for removing fluid from the floor to be cleaned, with the fluid removing means being connected with the other end of the vacuum conduit means.

2. The improved cleaning tool described in claim 1 wherein the spring means includes at least one leaf spring having one end connected with the scrubbing block and having the other end connected with the housing means.

3. The improved cleaning tool described in claim 1 wherein the spring means includes two leaf springs, each having one end connected with the scrubbing block and the other end connected with the housing means, and each being disposed in a plane generally transverse to the longitudinal, front-to-rear, center line of the scrubbing block.

4. The improved cleaning tool described in claim 3 where in normal usage, the scrubbing block and the housing means are adapted to be moved, back and forth, in directions generally parallel to the longitudinal, front-to-rear center line of the housing means;

wherein the means for removing fluid includes front and rear channels formed in the housing means adjacent to the front and rear edges, respectively, of the housing means;

wherein the front channel has a first end and a second end;

wherein the rear channel has a first end and a second end;

wherein the front and rear channels are open to the bottom portion of the housing means and to the floor to be cleaned and are in communication with the vacuum conduit means;

wherein front and rear squeegee blade assemblies are positioned within the front and rear channels, respectively; and

wherein each squeegee blade assembly includes at least one squeegee blade whose lower edge may contact the floor to be cleaned.

5. The improved cleaning tool described in claim 4 wherein the front and rear channels are symmetrical about a plane transverse to said longitudinal center line and about a plane which includes said longitudinal center line and which is transverse to the axes of the front and rear channels;

wherein the first ends of the front and rear channels are located adjacent to each other;

wherein the second ends of the front and rear channels are located adjacent to each other;

wherein each squeegee blade assembly includes a pair of support members that are each connected with a respective squeegee blade to support and carry the upper portion of the squeegee blade within the channel;

wherein each of the pairs of support members extend substantially from the first end of its respective channel to the second end;

wherein the outer ends of each of the pairs of support members are pivotably mounted on the housing so that the lower edges of the support members and their respective blades may pivotably move through an arc within their respective channels, and wherein the support members include a plurality of depending feet whose lower ends project below the bottom portion of the housing means so that the bottom portion of the housing means is disposed above the floor to be cleaned.

6. The improved cleaning tool described in claim 5 wherein a first link interconnects the outer ends of the support members adjacent to the first ends of the front and rear channels;

wherein a second link interconnects the outer ends of the support members adjacent to the second ends of the front and rear channels so that the two pairs of support members move in concert with each other whereby when the scrubbing block and housing are moved in a forward direction, the lower edges of the front squeegee blades are spaced slightly above the floor to be cleaned while the lower edges of the rear squeegee blades are in contact with the floor to be cleaned and whereby when the scrubbing block and housing are moved in a rearward direction, the lower edges of the rear squeegee blades are spaced slightly above the floor to be cleaned while the other edges of front squeegee blade are in contact with the floor to be cleaned.

7. The improved cleaning tool described in claim 6 wherein the front and rear channels are symmetrical about a plane transverse to said longitudinal center line and about a plane which includes said longitudinal center line and which is transverse to the axes of the front and rear channels;

wherein the scrubbing block is disposed centrally between the front and rear edges of the housing means about said lontitudinal center line;

wherein the lower end of the handle includes bifurcated arms pivotably attached to the scrubbing block at points which are equi-spaced from and on each side of said lontitudinal center line; and

wherein the inner ends of the support members of each of the pairs of support members are spaced apart adjacent to said longitudinal center line.

8. The improved cleaning tool described in claim 7 wherein the fluid discharging means includes nozzle means adapted to discharge fluid onto the floor to be cleaned between the front and rear edges of the housing means;

and wherein the nozzle means includes a manifold and a plurality of nozzles connected with the manifold;

wherein the manifold is mounted on the housing means adjacent to the front edge thereof wherein the fluid discharge means also includes a line interconnecting the manifold with a source of cleaning fluid and a valve for controlling flow through the line, the line being carried, in part, by the handle and the valve being mounted on the handle; and

wherein the vacuum conduit is in part, interior of the the handle.

9. The improved cleaning tool described in claim 8 wherein a central opening is formed in the front edge of the housing means and permits fluid to pass into the front channel;

wherein a central opening is formed in the rear edge of the housing means and permits fluid to pass into the rear channel;

wherein aprons having a plurality of flexible depending elements are disposed over the front and rear openings, with the lower ends of the elements being in contact with the floor to be cleaned.

10. The improved cleaning tool described in claim 9 wherein the bottom surface of the scrubbing block includes a detachedly mounted abrasive pad, and wherein the bottom surface of the scrubbing block is normally in contact with the floor to be cleaned.

11. The improved cleaning tool described in claim 1 wherein the scrubbing block is positioned centrally between the front and the rear edges of the housing means;

wherein the lower end of the handle includes bifurcated arms pivotably attached to the scrubbing block at points which are equi-spaced from and on each side of the longitudinal, front-to-rear center line of the scrubbing block; and

wherein the connection means permits limited relative movement between the scrubbing block and the housing means and includes two leaf springs which each have a first end and a second end, with each of the leaf springs, having their first end connected with the scrubbing block and their second end connected with the housing means, and with each of the leaf springs being disposed in a plane generally transverse to said longitudinal center line.

12. The improved cleaning tool described in claim 11 wherein the fluid removing means is positioned adjacent to the front and rear edges of the housing means;

and wherein the scrubbing block is disposed between the front and rear edges of the housing means and between the fluid removing means positioned adjacent thereto; and

wherein in normal usage, the scrubbing block and the housing means are adapted to be moved, back and forth, in directions generally parallel to said longitudinal center line.

13. The improved tool described in claim 1 where in normal usage, the scrubbing block and the housing means are adapted to be moved, back and forth, in directions generally parallel to the longitudinal, front-to-rear center line of the housing means;

wherein the means for removing fluid includes front and rear channels formed in the housing means adjacent to the front and rear edges, respectively, of the housing means;

wherein the front channel has a first end and second end;

wherein the rear channel has a first end and a second end;

wherein the front and rear channels are open to the floor to be cleaned and are in communication with the vacuum conduit means;

wherein front and rear squeegee blade assemblies are positioned within the front and rear channels, respectively; and

wherein each squeegee blade assembly includes at least one squeegee blade whose lower edge may contact the floor to be cleaned.

14. The improved tool described in claim 13 wherein the front and rear channels are symmetrical about a plane transverse to said longitudinal center line and about a plane which includes said longitudinal center line and which is transverse to the axes of the first and rear channels;

wherein the first ends of the front and rear channels are located adjacent to each other; and

wherein the second ends of the front and rear channels are located adjacent to each other.

15. The improved tool described in claim 14 wherein each squeegee blade assembly includes a pair of support members that are connected with a respective squeegee blade so as to support and carry the upper portion of the squeegee blade within the channel, with the support members forming the pair of support members being spaced apart adjacent to said longitudinal center line;

wherein each of the pairs of support members extend substantially from the first end of its respective channel to the second end; and

wherein the outer ends of each of the support members are pivotably mounted on the housing means so that the lower edges of the support members, and their respective blades, may pivotably move through an arc within their respective channels.

16. The improved tool described in claim 15 wherein a first link interconnects the outer ends of the support members adjacent to the first ends of the front and rear channels;

wherein a second link interconnects the outer ends of the support members adjacent to the second ends of the front and rear channels whereby when the scrubbing block and housing means are moved in a forward direction, the lower edges of the front squeegee blade are spaced slightly above the floor to be cleaned while the lower edges of the rear squeegee blade are in contact with the floor to be cleaned and whereby when the scrubbing block and housing means are moved in a rearward direction, the lower edges of the rear squeegee blade are spaced slightly above the floor to be cleaned while the lower edges of the front squeegee blades are in contact with the floor to be cleaned.

17. The improved cleaning tool described in claim 16 wherein a central opening is formed in the front edge of the housing means and permits fluid to pass into the front channel;

wherein a central opening is formed in the rear edge of the housing means and permits fluid to pass into the rear channel;

wherein aprons, having a plurality of flexible depending elements, are disposed over the front and rear openings, with the lower ends of the elements being in contact with the floor to be cleaned.

18. The improved cleaning tool described in claim 15 wherein the support members include depending feet whose lower ends project below the bottom portion of ths housing means so that the bottom portion of the housing means is disposed above the floor to be cleaned.

19. The improved cleaning tool described in claim 1 wherein the fluid discharging means includes nozzle means adapted to discharge fluid onto the floor to be cleaned between the front and rear edges of the housing means.

20. The improved cleaning tool described in claim 19 wherein the nozzle means includes a manifold and a plurality of nozzles connected with the manifold;

wherein the manifold is mounted on the housing means adjacent to the front edge thereof;

wherein the fluid discharge means also includes a line interconnecting the manifold with a source of cleaning fluid and a valve for controlling flow through the line, with the line being carried, in part, by the handle and the valve being mounted on the handle; and

wherein the vacuum conduit is carried, in part, by the handle.