Water filtration vacuum cleaner

Inactive Publication Date: 2005-05-26
SOUTH ASIA INT H K
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012] The floor and rug cleaning tool or attachment of the vacuum cleaner of the invention includes a retractable brush. The brush is mounted on a rocker plate supported pivotally within the tool. A manually depressible actuator extends through an opening in the upper surface of the tool to push the rocker, against the action of biasing springs, from its brush retracted position to its brush projected position.
[0007] In accordance with the present invention a canister-type water filtration vacuum cleaner is provided that forgoes the “main housing” construction approach and instead adopts a modular construction. The water tank is large and provides the major portion of the exterior of the canister.

Problems solved by technology

In some canister-type water filtration vacuum cleaners the liquid tank is small because the allocation of space in the housing does not allow for a larger tank.
Their high center of gravity can lead to accidental tipping.
Some designs appear to have dealt with this problem by spreading the wheels out farther on projecting wheel supports, but this increases the footprint of the vacuum cleaner.
Furthermore, such designs are unattractive.

Method used

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Examples

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Embodiment Construction

[0035] As seen in FIG. 1, rather than having a main housing into which the constituent parts of a water filtration vacuum cleaner canister are assembled, a modular water filtration vacuum cleaner canister 20 in accordance with the preferred embodiment of the present invention includes three major interfitting units. These are a cradle car or trolley 22, a removable water tank 24 and a motor unit 26. As can be seen from FIGS. 11-16, the trolley 22 is movably supported on a two-wheeled front caster 28 and two relatively large rear wheels 30 and 32. As shown in FIG. 16, the caster 28 has a stem 29 secured rotatably in a socket 34 formed in the body of the trolley unit 22. The independently rotatable two large rear wheels 30 and 32 and the rotatably mounted caster 28 permit easy movement of the canister in all directions during vacuum cleaning.

[0036] Centrally, the trolley 22 defines an opening 36 (FIG. 11B) through which motor cooling air is drawn as described more fully below. The tr...

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Abstract

A water filtration vacuum cleaner that has a modular construction. A motor module fits deep into a central opening of a water tank module so that the center of gravity of the vacuum cleaner is lowered. The water tank module is then placed on top of a trolley module, which has a rotatable arm. When rotated into a substantially vertical position, the arm secures the water tank module and motor module to the trolley module. A vacuum hose connects into the water tank from above. The air path from the hose into the water tank module extends through an upper surface of the water tank module that incorporates the motor module. When activated, motor cooling air is drawn in through the bottom of a central opening in the trolley module.

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application claims priority from the provisional patent application Ser. No. 60 / 525,399 filed Nov. 26, 2003 in the name of Raymond (Hoi-Tak) Lam entitled “Water Filtration Vacuum Cleaner,” incorporated herein by reference.FIELD OF THE INVENTION [0002] This invention relates to vacuum cleaners and more particularly to water filtration vacuum cleaners. BACKGROUND OF THE INVENTION [0003] Water filtration vacuum cleaners have been sold that have a canister with an outer, “main” housing enclosing the motor, blower, motor cooling fan and water pan in that main housing that forms the exterior of the canister. [0004] In some canister-type water filtration vacuum cleaners the liquid tank is small because the allocation of space in the housing does not allow for a larger tank. This requires more frequent emptying and refilling than does a larger tank. [0005] Another shortcoming of some water filtration vacuum cleaners described in the art is...

Claims

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Application Information

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IPC IPC(8): A47L5/36A47L9/00A47L9/06A47L9/18A47L9/22A47L9/24A47L9/32
CPCA47L5/362A47L5/365A47L9/0009A47L9/0027A47L9/009A47L9/06A47L9/327A47L9/0653A47L9/0673A47L9/181A47L9/187A47L9/22A47L9/242A47L9/0613
InventorLAM, RAYMOND HOI-TAK
OwnerSOUTH ASIA INT H K