U.S. patent application number 11/740825 was filed with the patent office on 2007-11-01 for vacuum cleaner.
This patent application is currently assigned to DAEWOO ELECTRONICS CORPORATION. Invention is credited to IM SUK CHOI.
Application Number | 20070251048 11/740825 |
Document ID | / |
Family ID | 38373043 |
Filed Date | 2007-11-01 |
United States Patent
Application |
20070251048 |
Kind Code |
A1 |
CHOI; IM SUK |
November 1, 2007 |
VACUUM CLEANER
Abstract
A vacuum cleaner includes a dust container detachably mounted in
a body of the vacuum cleaner and configured to perform vacuum
cleaning via air suction even in a detached state. The vacuum
cleaner includes the body having a hose attaching part and an
accommodation recess, the dust container separably inserted into
the accommodation recess, and including a hose mounting port, a
filter, a knob, and a coupling part formed near the filter on an
outer surface of the dust container, a main motor received near the
filter of the dust container in the body and driven to suck air, a
power supply device to supply power to drive the main motor, and an
assistant driving unit separably inserted into the accommodation
recess, and including a fastening part releasably coupled to the
coupling part and an assistant motor received in the assistant
driving unit to suck air.
Inventors: |
CHOI; IM SUK; (INCHEON-SI,
KR) |
Correspondence
Address: |
KNOBBE MARTENS OLSON & BEAR LLP
2040 MAIN STREET, FOURTEENTH FLOOR
IRVINE
CA
92614
US
|
Assignee: |
DAEWOO ELECTRONICS
CORPORATION
SEOUL
KR
|
Family ID: |
38373043 |
Appl. No.: |
11/740825 |
Filed: |
April 26, 2007 |
Current U.S.
Class: |
15/329 ;
15/352 |
Current CPC
Class: |
A47L 5/225 20130101;
A47L 9/1463 20130101; A47L 9/2884 20130101; A47L 5/362 20130101;
A47L 9/22 20130101; A47L 9/2878 20130101; A47L 5/24 20130101 |
Class at
Publication: |
15/329 ;
15/352 |
International
Class: |
A47L 5/00 20060101
A47L005/00 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 27, 2006 |
KR |
10-2006-0038413 |
Claims
1. A vacuum cleaner comprising: a main body; a first motor housed
in the main body; a dust container releasably engaged with the main
body, wherein when engaged, the dust container and the main body
form a first vacuum cleaner using the first motor and the dust
container; a hand-held module releasably engaged with the main
body; a second motor housed in the hand-held module; wherein the
hand-held module and the dust container are configured to be
coupled with each other to form a second vacuum cleaner using the
dust container and the second motor, wherein when the dust
container is engaged with the main body, the dust container is not
operably coupled with the hand-held module.
2. The vacuum cleaner of claim 1, wherein the dust container
comprising an air inlet port and an air outlet port, wherein the
air outlet port is configured to be connected to both the main body
and the hand-held module, wherein the air outlet port is in fluid
communication with the main body when the dust container is engaged
with the main body.
3. The vacuum cleaner of claim 2, wherein the air outlet port is
not in fluid communication with the hand-held module when the dust
container is engaged with the main body.
4. The vacuum cleaner of claim 2, wherein the hand-held module
comprises an air inlet port configured to be coupled with the air
outlet port of the dust container, wherein the air inlet port of
the hand-held module and the outlet port of the dust container
faces different directions when the dust container is engaged with
the main body.
5. A method of using a vacuum cleaner, comprising: providing the
vacuum cleaner of claim 1, wherein the hand-held module and the
dust container are engaged with the main body; disengaging the dust
container from the main body; disengaging the hand-held module from
the main body; and coupling the hand-held module and the dust
container to form the second vacuum cleaner.
6. The method of claim 5, wherein the hand-held module is
disengaged from the main body after coupling the hand-held module
and the dust container.
7. A vacuum cleaner, comprising: a body comprising a hose attaching
part and an accommodation recess; a dust container separably
inserted into the accommodation recess, the dust container
comprising a hose mounting port for coupling with a hose, a filter
to filter foreign matter, a handle, and a coupling part formed near
the filter on an outer surface of the dust container; a main motor
housed in the body; a power supply to supply power to drive the
main motor; and an assistant driving unit separably inserted into
the accommodation recess, the assistant driving unit comprising a
fastening part configured to be releasably coupled to the coupling
part and an assistant motor housed in the assistant driving
unit.
8. The vacuum cleaner according to claim 7, wherein the assistant
driving unit comprises: an assistant case comprising the fastening
part; the assistant motor housed in the assistant case near the
dust container; and an assistant power source connected to the
assistant motor to supply power thereto.
9. The vacuum cleaner according to claim 8, wherein when the
assistant case is inserted in the accommodation recess, the
fastening part is located such that, as the coupling part of the
dust container is inserted downward into the accommodation recess,
the coupling part is coupled to the fastening part.
10. The vacuum cleaner according to claim 8, wherein the coupling
part comprises a coupling hole formed in an extension part
extending from upper and lower sides of a rear surface of the dust
container, and the fastening part comprises at least one latch
protrusion formed on an outer peripheral surface of the assistant
case configured to be inserted into the coupling hole.
11. The vacuum cleaner according to claim 10, wherein the at least
one latch protrusion comprises a plurality of latch protrusions,
one of which is integrally formed with a button protruding from the
outer peripheral surface of the assistant case, the button being
supported by an elastic member received in the assistant case.
12. The vacuum cleaner according to claim 8, wherein the assistant
case comprises an assistant handle.
13. The vacuum cleaner according to claim 8, wherein the main body
comprises a guide rib in the accommodating recess to guide the
assistant case as the assistant case is inserted in the
accommodation recess.
14. The vacuum cleaner according to claim 8, wherein the assistant
power source comprises a power cable and a plug.
15. The vacuum cleaner according to claim 8, wherein the assistant
power source comprises a rechargeable battery.
16. The vacuum cleaner according to claim 15, wherein the battery
is housed in the assistant case and configured to be charged via
the power supply.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims the priority of Korean Patent
Application No. 10-2006-0038413, filed on Apr. 27, 2006, in the
Korean Intellectual Property Office, the disclosure of which is
incorporated herein by reference in its entirety.
BACKGROUND
[0002] 1. Field
[0003] The present disclosure relates to a vacuum cleaner, and more
particularly to a vacuum cleaner that includes a detachable
hand-held configuration.
[0004] 2. Discussion of the Related Technology
[0005] According to shapes and usage postures, vacuum cleaners can
be generally classified into a canister type vacuum cleaner, which
provides convenience in corner cleaning and movement while allowing
easy replacement of a brush or a nozzle, and an upright type vacuum
cleaner, which provides convenience in storage and allows easy
cleaning of a large space.
[0006] FIG. 1 is a perspective view illustrating an exemplary
vacuum cleaner. Referring to FIG. 1, the exemplary vacuum cleaner
generally includes a suction unit 11 which will be brought into
close contact with a floor, a pipe 12 connected to the suction unit
11 and having a predetermined length, a handle 13 connected to the
pipe 12, a hose 14 connected to the handle 13, and a body 20
connected to the handle 14. The suction unit 11 is provided at a
lower surface with wheels to suck up foreign matter such as dust
and dirt while moving on the floor, and the pipe 12 and the handle
13 are used to move the suction unit 11 to desired locations. The
pipe 12 and the hose 14 serve to guide air containing the foreign
matter into the body 20, which in turn sucks the air containing the
foreign matter and collects the foreign matter while discharging
filtered air to an outside of the body 20.
[0007] FIG. 2 is a schematic cross-sectional view of the body shown
in FIG. 1. Referring to FIG. 2, the body 20 is provided at a front
side with a hose attaching part 21 to which the hose 14 is coupled.
The body 20 has a dust collection unit 22 positioned in a central
region and connected to the hose attaching part 21. Specifically,
the dust collection unit 22 includes a dust container 24 that is
inserted into an accommodation recess 23 defined in the central
region of the body 20 and has a filter 25 to filter foreign matter.
The dust container 24 is provided at an upper side with a knob 26
and is separated from the accommodation recess 23 by a separation
button 27 formed on the knob 26. A motor 28 is disposed adjacent
the insertion groove 23 inside the body 20 and driven by power
supplied via a power supply device 29.
[0008] When the motor 28 is driven by power, air containing foreign
matter is drawn into the dust container 24 and passes through the
filter 25 in the dust container 24, so that the foreign matter is
filtered by the filter 25 and collected in the container 24 while
filtered air is discharged outside the vacuum cleaner. Then, when
filled with the foreign matter, the dust container 24 is separated
from the insertion groove 24 by pushing the separation button 27,
and opened to remove the foreign matter by means of a separate
button.
[0009] Since such a vacuum container has the motor installed inside
the body, it is necessary to move the body when performing the
vacuum operation at several locations on the floor. Therefore, the
exemplary vacuum cleaner has problems in that the overall body must
be moved even for corner vacuuming or partial vacuuming, and in
that, in the case where a power cable has a short length, it must
be plugged again in a wall socket near a vacuuming location.
[0010] The discussion in this section is to provide general
background information, and does not constitute an admission of
prior art.
SUMMARY
[0011] An aspect of the invention provides a vacuum cleaner
comprising: a main body; a first motor housed in the main body; a
dust container releasably engaged with the main body, wherein when
engaged, the dust container and the main body form a first vacuum
cleaner using the first motor and the dust container; a hand-held
module releasably engaged with the main body; a second motor housed
in the hand-held module; wherein the hand-held module and the dust
container are configured to be coupled with each other to form a
second vacuum cleaner using the dust container and the second
motor, wherein when the dust container is engaged with the main
body, the dust container is not operably coupled with the hand-held
module.
[0012] In the foregoing vacuum cleaner, the dust container may
comprise an air inlet port and an air outlet port, wherein the air
outlet port may be configured to be connected to both the main body
and the hand-held module, wherein the air outlet port may be in
fluid communication with the main body when the dust container is
engaged with the main body. The air outlet port may not be in fluid
communication with the hand-held module when the dust container is
engaged with the main body. The hand-held module may comprise an
air inlet port configured to be coupled with the air outlet port of
the dust container, wherein the air inlet port of the hand-held
module and the outlet port of the dust container may face different
directions when the dust container is engaged with the main
body.
[0013] Another aspect of the invention provides a method of using a
vacuum cleaner, comprising: providing the foregoing vacuum cleaner,
wherein the hand-held module and the dust container are engaged
with the main body; disengaging the dust container from the main
body; disengaging the hand-held module from the main body; and
coupling the hand-held module and the dust container to form the
second vacuum cleaner. The hand-held module may be disengaged from
the main body after coupling the hand-held module and the dust
container.
[0014] Yet another aspect of the invention provides a vacuum
cleaner, comprising: a body comprising a hose attaching part and an
accommodation recess; a dust container separably inserted into the
accommodation recess, the dust container comprising a hose mounting
port for coupling with a hose, a filter to filter foreign matter, a
handle, and a coupling part formed near the filter on an outer
surface of the dust container; a main motor housed in the body; a
power supply to supply power to drive the main motor; and an
assistant driving unit separably inserted into the accommodation
recess, the assistant driving unit comprising a fastening part
configured to be releasably coupled to the coupling part and an
assistant motor housed in the assistant driving unit.
[0015] In the foregoing vacuum cleaner, the assistant driving unit
may comprise an assistant case comprising the fastening part, the
assistant motor housed in the assistant case near the dust
container, and an assistant power source connected to the assistant
motor to supply power thereto. When the assistant case is inserted
in the accommodation recess, the fastening part may be located such
that, as the coupling part of the dust container is inserted
downward into the accommodation recess, the coupling part is
coupled to the fastening part. The coupling part may comprise a
coupling hole formed in an extension part extending from upper and
lower sides of a rear surface of the dust container, and the
fastening part may comprise at least one latch protrusion formed on
an outer peripheral surface of the assistant case configured to be
inserted into the coupling hole. The at least one latch protrusion
may comprise a plurality of latch protrusions, one of which is
integrally formed with a button protruding from the outer
peripheral surface of the assistant case, the button being
supported by an elastic member received in the assistant case. The
assistant case may comprise an assistant handle. The main body may
comprise a guide rib in the accommodating recess to guide the
assistant case as the assistant case is inserted in the
accommodation recess. The assistant power source may comprise a
power cable and a plug. The assistant power source may comprise a
rechargeable battery. The battery may be housed in the assistant
case and configured to be charged via the power supply.
[0016] A further aspect of the present invention provides a vacuum
cleaner that includes a dust container detachably mounted in a body
of the vacuum cleaner and configured to perform vacuum cleaning via
air suction even in a detached state, so that a user can perform
vacuum cleaning even in a place that a power source is not
provided, while carrying the detached dust container.
[0017] In accordance with one aspect of the present invention, a
vacuum cleaner is provided, which comprises: a body having a hose
attaching part and an accommodation recess; a dust container
separably inserted into the accommodation recess, and including a
hose mounting port for coupling with the hose, a filter to filter
foreign matter, a knob, and a coupling part formed near the filter
on an outer surface of the dust container; a main motor received
near the filter of the dust container in the body and driven to
suck air; a power supply device to supply power to drive the main
motor; and an assistant driving unit separably inserted into the
accommodation recess, and including a fastening part releasably
coupled to the coupling part and an assistant motor received in the
assistant driving unit to suck air.
[0018] The assistant driving unit may comprise an assistant case
having the fastening part; the assistant motor received in the
assistant case near the dust container to suck air; and an
assistant power source connected to the assistant motor to supply
power thereto. The fastening part may be formed on the top of the
assistant case inserted into the accommodation recess such that, as
the coupling part of the dust container is inserted downward into
the accommodation recess, the coupling part is coupled to the
fastening part. The coupling part may comprise a coupling hole
formed in an extension part extending from upper and lower sides of
a rear surface of the dust container, and the fastening part may
comprise at least one latch protrusion formed on an outer
peripheral surface of the assistant case to be inserted into the
coupling hole. The at least one latch protrusion may comprise a
plurality of latch protrusions, one of which is integrally formed
with a button protruding from the outer peripheral surface of the
assistant case, and the button is supported by an elastic member
received in the assistant case. The assistant case may be provided
with an assistant knob. The accommodation recess may be provided
with a guide rib to guide the assistant case. The assistant power
source may be a rechargeable battery or a power cable to be plugged
into a wall socket. The battery may be received in the assistant
case and charged by the power supply device connected to the
battery.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] These and other aspects and features of the present
invention will be more clearly understood from the following
detailed description taken in conjunction with the accompanying
drawings, in which:
[0020] FIG. 1 is a perspective view of an exemplary vacuum
cleaner;
[0021] FIG. 2 is a schematic cross-sectional view of a body of the
exemplary vacuum cleaner shown in FIG. 1;
[0022] FIG. 3 is a schematic cross-sectional view illustrating the
inner construction of a vacuum cleaner according to one embodiment
of the present invention;
[0023] FIG. 4 is a view illustrating a dust container and an
assistant driving unit of FIG. 3 in a state of being coupled to
each other;
[0024] FIG. 5 is a cross-sectional view illustrating the dust
container and the assistant driving unit of FIG. 3 in a coupled
state, wherein the dust container can be self-operated; and
[0025] FIG. 6 is a side view illustrating the dust container and
the assistant driving unit having a power cable used as an
assistant power source of the vacuum cleaner according to one
embodiment of the present invention.
DETAILED DESCRIPTION OF EMBODIMENTS
[0026] Exemplary embodiments of the present invention will be
described in detail with reference to the accompanying
drawings.
[0027] For convenience of description, the drawings are not to
precise scale and may be exaggerated in thickness of lines or size
of components for descriptive convenience and clarity only.
Furthermore, terms used herein and defined by taking functions of
the apparatus according to embodiments of the present invention
into account and can be changed according to the custom or
intention of users or operators. Therefore, definition of such
terms should be made according to overall disclosures herein.
[0028] FIG. 3 is a schematic cross-sectional view illustrating the
inner construction of a vacuum cleaner according to one embodiment
of the present invention, FIG. 4 is a view illustrating a dust
container and an assistant driving unit of FIG. 3 in a state of
being coupled to each other, FIG. 5 is a cross-sectional view
illustrating the dust container and the assistant driving unit of
FIG. 3 in a coupled state, wherein the dust container can be
self-operated, and FIG. 6 is a side view illustrating the dust
container and the assistant driving unit having a power cable used
as an assistant power source of the vacuum cleaner according to one
embodiment of the present invention.
[0029] Although not shown in the drawings, the vacuum cleaner
according to an embodiment of the invention comprises a suction
unit, a pipe, and a handle, which are assembled in sequence and
connected to a hose 14. The vacuum cleaner comprises a body 30 that
is formed at a front side with a hose attaching part 31 for
coupling with the hose 14 and has an accommodation recess 32 opened
at a portion.
[0030] A dust container 41 is separably coupled to the body 30 by
inserting the dust container 41 into the accommodation recess 32.
The dust container 41 is formed at the front side with a hose
mounting port 42 that corresponds to the hose attaching part 31 and
is coupled to the hose 14. Here, as in the exemplary vacuum cleaner
shown in the drawings, the hose 14 may be a nozzle, which is
connected to any one of the suction unit, the pipe and the handle,
or used for a general handy cleaner. The dust container 41 is
provided at an upper side with a knob 43, with which a user can
carry the dust container 41. When the dust container 41 is coupled
to the body 30, the user can lift the body 30 with the knob 43. The
dust container 41 has a filter 44 received inside the rear surface
thereof to filter foreign matter, and a coupling part 45 formed
near the filter 44 on an outer surface of the dust container
41.
[0031] A main motor 33 is installed near the filter 44 of the dust
container 41 in the body 30 and operated for air suction. The body
30 is provided with a power supply device unit 34. The power supply
device unit 34 is electrically connected to the main motor 33 and
plugged into a wall socket to supply power to the main motor 33
when driving the main motor 33.
[0032] Here, the vacuum cleaner according to an embodiment of the
present invention comprises an assistant driving unit 51 that is
separably inserted into the accommodation recess 32 of the body 30.
The assistant driving unit 51 is positioned at a lower portion in
the accommodation recess 32 and the dust container 41 is laid on
the top of the assistant driving unit 51. In this way, since the
dust container 41 and the assistant driving unit 51 are separated
from the body 30 and coupled to each other, it is possible to
perform vacuum cleaning using an assembly of the dust container 41
and the assistant driving unit 51 via air suction. The assistant
driving unit 51 comprises an assistant case 52, an assistant motor
53, and an assistant power source 54 or 55. The assistant case 52
comprises a fastening part 56 coupled to one side of the dust
container 41 near the filter 44.
[0033] The assistant motor 53 is received in the assistant case 52
to be positioned near the dust container 41 and is operated for air
suction. The assistant power source 54 or 55 is electrically
connected to the assistant motor 53 and supplies power thereto when
driving the assistant motor 53.
[0034] Here, the fastening part 56 is positioned on the top of the
assistant case 52 inserted into the accommodation recess 32 such
that, as the coupling part 45 of the dust container 41 is inserted
downward into the accommodation recess 32, the coupling part 45 is
coupled to the fastening part 56. More specifically, the fastening
part 56 can be coupled to or released from the coupling part 45,
and is provided on the top of the assistant driving unit 51
inserted into the accommodation recess 32 such that, when the
assistant driving unit 51 is inserted into the accommodation recess
32, the coupling part 45 of the dust container 41 is coupled to the
fastening part 56 of the assistant driving unit 51.
[0035] Here, when the coupling part 45 is coupled to the fastening
part 56, it is desirable that the filter 44 be located near the
assistant motor 53. For this purpose, the fastening part 56 is
preferably located on the assistant case 51, which is positioned
near the assistant motor 53. As one example of such coupling
configurations of the dust container 41 and the assistant driving
unit 51, the coupling part 45 comprises an extension part 46
extending from upper and lower sides of the rear surface of the
dust container 41 and a coupling hole 47 formed in the extension
part 46.
[0036] Additionally, the assistant case 52 has such a height to
allow the assistant case 52 to be inserted into the coupling part
45, and the fastening part 56 has latch protrusions 57, which are
formed on an outer peripheral surface of the assistant case 52 and
inserted into the coupling hole 47. Here, one of the protrusions 57
is integrally formed with a button 58 protruding from the outer
peripheral surface of the assistant case 52, and the button 58 is
supported by an elastic member 59 received in the assistant case
52. The assistant case 52 is provided with an assistant knob 50, so
that the center of mass of the assembly of the dust container 41
and assistant driving unit 51 is directed forward. In addition, the
accommodation recess 32 may be provided with a guide rib 35 to
guide the assistant case 52.
[0037] The assistant power source 54, 55 may be a rechargeable
battery 55 or a power cable 54 having a predetermined length and
configured to be plugged into a wall socket. The battery 55 may be
received in the assistant case 52. Here, if the assistant power
source is the battery 55, the accommodation recess 32 and the
assistant case 52 are provided with ground terminals 55a to contact
each other, and such ground terminals 55a are connected to the
power supply device 34 to charge the battery 55.
[0038] Operation of the vacuum cleaner according to the embodiment
of the present invention having such a configuration as described
above will be described. First, by pushing an operation button with
the power supply device 34 plugged into a wall socket, the main
motor 33 is driven to force air containing foreign matter to be
drawn into the dust container 41 through the hose 14, and air
filtered through the filter 44 is discharged to the outside.
[0039] Further, to use the dust container 41 as a handy cleaner by
detaching the dust container 41 from the body 30, the dust
container 41 is separated from the accommodation recess 32 of the
body 30 by means of the separation button 36.
[0040] After detaching the dust container 41 from the body 30, by
bringing the coupling part 45 of the dust container 41 into contact
with the fastening part 56 in a state of the coupling part facing
downward, as shown in FIG. 4, the latch protrusion 57 is inserted
into the coupling hole 47 of the extension part 46, so that the
dust container 41 is coupled to the assistant driving unit 51. In
this state, when pulling the dust container 41 out of the
accommodation recess 32, the dust container 41 and assistant
driving unit 51 remain in an integrated state, and the hose 14 or
the assistant nozzle 15 is mounted to the hose mounting port 42 of
the dust container 41.
[0041] Then, when a user pushes a switch 51a of the assistant
driving unit 51, power is supplied to the assistant motor 53 via
the assistant power source 54 or 55, and the assistant motor 53 is
then driven to perform air suction. Therefore, the user can perform
vacuum cleaning while moving the dust container 41 by gripping the
knob 43 of the dust container 41. At this time, if the power cable
54 is used as the assistant power source, it is plugged into the
wall socket to supply power to the assistant motor. If the battery
55 is used as the assistant power source, the battery 55 is charged
through the ground terminals 55a via the power supply device 34 and
supplies power to the assistant motor 53 in response to a signal
from the switch 51a.
[0042] The aforementioned assembly of the dust container 41 and
assistant driving unit 51 can have the center of mass leaning
towards the rear of the assembly due to the weight of the assistant
motor 53 or the battery 55 received inside the assistant driving
unit 51. If the center of mass is located at the rear of the
assembly, it is difficult for the user to hold the knob 43 such
that the assistant hose 14 or the assistant nozzle 15 can be
brought into close contact with a floor during vacuum cleaning.
According to the embodiment, however, an assistant knob 50 is
formed at a rear upper side of the assistant case 52 and allows the
center of mass of the assembly to be located at the front when the
user holds the assistant knob 50, enabling easy vacuum
cleaning.
[0043] After completing the vacuum cleaning with the assembly of
the dust container 41 and assistant driving unit 51, the button 58
of the assistant driving unit 51 is pushed to compress the elastic
member 59, and, the latch protrusion 57 is then released from the
coupling hole 47 of the extension part 46. In this way, the dust
container 41 is separable from the assistant driving unit 51.
[0044] Next, the assistant driving unit 51 is inserted into the
accommodation recess 32 such that the fastening part 56 is located
at an upper side, so the assistant driving unit 51 can be stably
seated at the lower portion of the accommodation recess 32 along
the guide rib 35. Then, the dust container 41 is inserted into the
accommodation recess 32 and located on the assistant driving unit
51.
[0045] In the vacuum cleaner of the embodiment, the filter 44 is
disposed at one side of the dust container 41 in a close contact
state, and the main motor 33 or the assistant motor 53 is installed
to closely contact the filter 44. Here, in order to ensure air flow
in the vacuum cleaner, a plurality of perforations (not shown) are
formed in portions of the dust container 41 and the assistant case
52 which closely contact the filter 44.
[0046] As apparent from the above description, the dust container
of the vacuum cleaner according to an embodiment of the present
invention enables vacuum cleaning not only in a state of being
mounted in the body, but also in a state of being detached
therefrom. In addition, the dust container of the vacuum cleaner
enables vacuum cleaning by using a battery where a wall socket is
not provided, thereby overcoming restriction by location.
Accordingly, the vacuum cleaner according to embodiments of the
present invention can eliminate needs of separately buying a larger
vacuum cleaner and a smaller vacuum cleaner, thereby being more
economical for consumers.
[0047] Although embodiments of the present invention has been
described with reference to the drawings, it should be understood
that these embodiments are provided for illustrative purposes and
that various equivalent modifications and other embodiments will be
apparent to those skilled in the art without departing from the
scope of this invention. Therefore, the scope and spirit of the
invention is limited only by the claims set forth herein as
follows.
* * * * *