Compact wet/dry vacuum cleaner with flexible bladder

• US 5,735,017 A
• Filed: 03/29/1996
• Issued: 04/07/1998
• Est. Priority Date: 03/29/1996
• Status: Expired due to Term

• Current Assignee: Bissell Homecare, Inc. (Bissell Inc.)
• Original Assignee: Bissell Inc.
• Inventors: Bartlett, Michael D., Barnes, James F., Harbeck, Martin E., Johnson, Marion C.
• Primary Examiner(s): MOORE, CHRISTOPHER K
• Application Number:
  US08/624,242
• Time in Patent Office: 739 Days
• Field of Search: 15/321, 15/328, 15/353, 15/320
• US Class Current: 15/321
• CPC Class Codes: A47L 11/30 by suction
• CPC Class Codes: A47L 11/34 Machines for treating carpets in position by liquid, foam, or vapour, e.g. by steam
• CPC Class Codes: A47L 11/4013 Contaminants collecting devices, i.e. hoppers, tanks or the like
• CPC Class Codes: A47L 11/4016 specially adapted for collecting fluids
• CPC Class Codes: A47L 11/4027 Filtering or separating contaminants or debris
• CPC Class Codes: A47L 11/4083 Liquid supply reservoirs; Preparation of the agents, e.g. mixing devices
• CPC Class Codes: A47L 11/4097 Means for exhaust-air diffusion; Exhaust-air treatment, e.g. air purification; Means for sound or vibration damping
• CPC Class Codes: A47L 7/0028 Security means, e.g. float valves or level switches for preventing overflow
• CPC Class Codes: A47L 7/0038 with means for emptying the tanks
• CPC Class Codes: A47L 7/0042 Gaskets; Sealing means
• CPC Class Codes: A47L 9/327 for suction cleaners with hose between nozzle and casing

Abstract

A vacuum cleaner for cleaning a surface is disclosed. The vacuum cleaner comprises a main housing including a tank chamber, a motor-blower assembly for creating a vacuum, a recovery tank disposed within the tank chamber for storing contaminated liquid, a supply tank for providing cleaning liquid, a hose assembly and a fluid pump. The fluid pump pumps fluid from the supply tank onto a surface to be cleaned. The vacuum pump creates a vacuum across the recovery tank assembly and hose assembly to vacuum up dispensed cleaning fluid into the recovery tank assembly. Preferably, the supply tank may be a flexible bladder disposed within the recovery tank. The flexible bladder contracts as liquid is dispensed so that the volume for storing contaminated liquid within the recovery tank assembly increases. Preferably, the recovery tank may be removed from the main housing and a vacuum bag is fluidly connected between the hose assembly and the motor-blower assembly for dry vacuuming.

Claims

1. A vacuum cleaner for cleaning a surface, the vacuum cleaner comprising:

a main housing including a tank chamber;

a motor-blower assembly and a fluid pump mounted within the main housing;

a recovery tank assembly mounted in the tank chamber for storing a contaminated liquid, the recovery tank assembly including a recovery tank and a flexible bladder; and

a hose assembly including a vacuum hose and a fluid dispensing conduit for dispensing cleaning liquid on to a floor surface;

the fluid pump in fluid communication with one of the flexible bladder and the recovery tank to pump fluid therefrom to the liquid dispensing conduit; and

the other of the flexible bladder and the recovery tank in fluid communication with the vacuum hose and motor-blower assembly so that the vacuum hose may vacuum liquid from the floor surface and into the other of the flexible bladder and the recovery tank.

2. The vacuum cleaner of claim 1 wherein:

the flexible bladder is in fluid communication with the fluid pump and the recovery tank is in fluid communication with the vacuum hose.

3. The vacuum cleaner of claim 1 wherein:

the flexible bladder is disposed within the recovery tank.

4. The vacuum cleaner of claim 1 further comprising:

a housing cover assembly which mounts upon the main housing, the housing cover assembly having an inlet tube which fluidly seals with the recovery tank assembly when the housing cover assembly is mounted upon the main housing.

5. The vacuum cleaner of claim 4 wherein:

the recovery tank assembly includes a tank cover assembly, the tank cover assembly including a main body with an aperture therein with an elastomeric seal ring in the aperture, the inlet tube passing through the seal ring when the housing cover assembly is mounted upon main housing to effect the fluid seal between the inlet tube and the recovery tank assembly.

6. The vacuum cleaner of claim 5 wherein:

the inlet tube attaches to the vacuum hose of the hose assembly.

7. The vacuum cleaner of claim 4 wherein:

the recovery tank assembly is removable from the tank chamber and a vacuum bag may be disposed in the tank chamber and placed in fluid communication with the vacuum hose and motor-blower assembly.

8. The vacuum cleaner of claim 7 wherein:

the housing cover assembly has a retaining clip therein for retaining the vacuum bag and the vacuum bag has an opening which fluidly connects to the inlet tube.

9. The vacuum cleaner of claim 1 further comprising:

a swivel plate rotatably mounted relative to the housing, the swivel plate including an inlet tube and a dispensing tube, the dispensing conduit and the inlet tube fluidly connecting to the flexible hose and dispensing conduit of the hose assembly;

wherein the hose assembly may swivel with the swivel plate relative to the main housing.

10. A wet/dry vacuum cleaner for cleaning a surface, the vacuum cleaner comprising:

a main housing including a tank chamber;

a motor and blower assembly mounted within the main housing;

a recovery tank assembly removably mountable in the tank chamber for storing a contaminated liquid, the recovery tank assembly including a recovery tank;

a supply tank disposed in the main housing for providing cleaning liquid;

a fluid pump fluidly connecting between the supply tank and a dispensing conduit to pump cleaning liquid on to a surface to be cleaned; and

a hose assembly in fluid communication with the recovery tank and motor-blower assembly to vacuum liquid and debris into the recovery tank; and

a vacuum bag for collecting dry debris therein;

wherein the recovery tank assembly can be placed in the tank chamber and fluidly connected to the hose assembly to store recovered liquid within the recovery tank in a wet vacuuming mode;

or else

the vacuum bag may be placed in the tank chamber and in fluid communication with the hose assembly to receive dry debris in a dry vacuuming mode.

11. The vacuum cleaner of claim 10 wherein:

the supply tank is disposed within the recovery tank.

12. The vacuum cleaner of claim 10 wherein:

the supply tank is a flexible bladder.

13. The vacuum cleaner of claim 10 further comprising:

a swivel plate rotatably mounted relative to the main housing, the swivel plate including an inlet tube and a dispensing tube, the dispensing conduit and the inlet tube fluidly connecting to the flexible hose and dispensing conduit of the hose assembly;

wherein the hose assembly may swivel with the swivel plate relative to the main housing.

14. A wet/dry vacuum cleaner convertible between a wet vacuuming mode and a dry vacuuming mode, the vacuum cleaner comprising:

a main housing including a tank chamber;

a recovery tank assembly removably mountable in the tank chamber, the recovery tank assembly including a flexible supply bladder therein for storing cleaning liquid;

a hose assembly for vacuuming a floor surface and fluidly connecting to the tank chamber, the hose assembly including a hose and a dispensing conduit;

a motor-blower assembly and a fluid pump respectively fluidly connecting to the tank chamber and the dispensing tube;

wherein in a wet vacuuming mode, the recovery tank assembly is placed in the tank chamber and in fluid communication with hose assembly and motor-blower assembly to store contaminated liquid; and

wherein in a dry vacuuming mode, the vacuum bag is placed in the tank chamber and in fluid communication with the hose assembly and the motor-blower assembly to store dry debris therein.

15. The vacuum cleaner of claim 14 further comprising:

a housing cover assembly mountable to the main housing and to which the hose assembly swivelably attached;

wherein when the housing cover assembly is closed, the hose assembly is automatically placed in fluid communication with the recovery tank assembly when the recovery tank assembly is disposed within the main housing.

16. The vacuum cleaner of claim 15 wherein:

the hose assembly swivelably attaches to the main housing assembly.