Vacuum mop head

• US 4,833,752 A
• Filed: 08/08/1988
• Issued: 05/30/1989
• Est. Priority Date: 08/08/1988
• Status: Expired due to Fees

• Current Assignee: John T. Merrick
• Original Assignee: John T. Merrick
• Inventors: Merrick, John T.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Reinckens, Corinne M.
• Application Number:
  US07/229,304
• Time in Patent Office: 295 Days
• Field of Search: 15/302, 15/320, 15/321, 15/322, 15/353, 15/364, 15/369, 15/392, 15/401, 15/415 R, 15/416, 15/418
• US Class Current: 15/322
• CPC Class Codes: A47L 11/29 Floor-scrubbing machines characterised by means for taking-up dirty liquid
• 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 11/4094 Accessories to be used in combination with conventional vacuum-cleaning devices
• CPC Class Codes: A47L 9/02 Nozzles suction nozzles for fluid transport B65G51/00
• CPC Class Codes: A47L 9/06 with fixed, e.g. adjustably fixed brushes or the like
• CPC Class Codes: A47L 9/0626 Rigidly anchored lips, e.g. nozzles adapted for picking up liquids

Abstract

A vacuum mop head having a scrubbing pad, a front squeegee in a front vacuum pickup slot, and a rear squeegee in a rear vacuum pickup slot has a vacuum outlet divided effectively between the two pickup slots. Side walls of a vacuum passageway extend downward from the top of the mop head and are covered by a plate that supports a liquid detergent dispensing system and encloses the vacuum passageway from the vacuum outlet to the front vacuum pickup. The upper half of the vacuum outlet evacuates the vacuum passageway to the front vacuum pickup, and the lower half of the vacuum outlet directly evacuates the rear vacuum pickup.

Claims

1. In a vacuum mop head having a housing with a scrubbing pad on a bottom surface, means for wetting said scrubbing pad with a liquid detergent, a rear vacuum pickup extending rearwardly of said scrubbing pad along a rear edge of said housing, a forward vacuum pickup extending forward of said scrubbing pad along a forward edge of said housing, and a vacuum outlet connectable to a vacuum wand at a rear region of said housing, the improvement comprising:

a. said housing having sides of a vacuum passageway formed to extend downward from a top of said housing and extending forward from said vacuum outlet to said forward vacuum pickup, said passageway sides being arranged in a central region of said housing spaced inward from end regions of said housing;

b. a plate secured to said housing to span the space between said passageway sides for enclosing said vacuum passageway from said vacuum outlet to said forward vacuum pickup;

c. said plate extending from the region of said forward vacuum pickup to the region of said vacuum outlet, where said plate divides said vacuum outlet into upper and lower halves;

d. said lower half of said vacuum outlet communicating with said rear vacuum pickup for evacuating said rear vacuum pickup; and

e. said upper half of said vacuum outlet communicating with said vacuum passageway and said forward vacuum pickup for evacuating said forward vacuum pickup.

2. The improvement of claim 1 including a rear squeegee fixed in place within said rear vacuum pickup and a forward squeegee fixed in place within said forward vacuum pickup.

3. The improvement of claim 2 wherein said rear squeegee is fixed to a rear wall of said rear vacuum pickup and bends forward to constrict air flow through said rear vacuum pickup on a rearward stroke of said vacuum mop head, and said forward squeegee is fixed to a forward wall of said forward vacuum pickup and bends rearward to constrict air flow through said forward vacuum pickup on a forward stroke of said vacuum mop head.

4. The improvement of claim 1 wherein said scrubbing pad wetting means if mounted on an underside of said plate covering said vacuum passageway.

5. The improvement of claim 1 wherein said tip of said housing and said sides of said vacuum passageway are formed as an integral casting.

6. The improvement of claim 1 wherein said plate is secured to said passageway sides.

7. The improvement of claim 1 wherein said plate is generally flat and inclined downward from said vacuum outlet to said forward vacuum pickup.

8. A vacuum system for a vacuum mop head having a cast housing with a front vacuum pickup along a front edge and a rear vacuum pickup along a rear edge, a vacuum outlet connectable to a vacuum wand at a rear region of said housing, a scrubbing pad arranged between said front and rear vacuum pickups in a lower region of said head, means for dispensing liquid detergent onto said scrubbing pad, a front squeegee arranged in said front vacuum pickup, and a rear squeegee arranged in said rear vacuum pickup, said vacuum system comprising:

a. an upper region of said housing under a top wall of said housing having a narrow vacuum passageway confined between side walls extending downward from said top wall, said vacuum passageway leading form said vacuum outlet along a central region of said housing where said side walls are spaced inward from end regions of said housing to communicate with said front vacuum pickup;

b. a plate secured to said housing and extending between said side walls for covering said vacuum passageway to enclose said vacuum passageway from said front vacuum pickup to said vacuum outlet;

c. said dispensing means for said detergent being mounted on an underside of said plate;

d. said plate extending to said vacuum outlet where said plate is disposed for dividing said vacuum outlet into an upper half and a lower half;

e. said upper half of said vacuum outlet communicating with said vacuum passageway and said front vacuum pickup; and

f. said lower half of said vacuum outlet communicating with said rear vacuum pickup.

9. The vacuum system of claim 8 wherein said squeegees are fixed in place in said forward and rear pickups.

10. The vacuum system of claim 9 wherein said forward squeegee is fixed to a forward wall of said forward pickup and bends rearward on a forward stroke of said vacuum mop head to constrict air flow through said forward pickup, and said rearward squeegee is fixed to a rear wall of said rear pickup and bends forward on a rearward stroke of said vacuum mop head to constrict air flow in said rearward pickup.

11. The vacuum system of claim 8 wherein said side walls of said vacuum passageway are cast into said top region of said housing.

12. The vacuum system of claim 8 wherein said plate is secured to said side walls of said passageway.