U.S. patent application number 12/428667 was filed with the patent office on 2010-10-28 for sofa bed with roll out bed mechanism.
This patent application is currently assigned to Lifestyle Solutions, Inc.. Invention is credited to Abedan Kanthasamy.
Application Number | 20100269255 12/428667 |
Document ID | / |
Family ID | 42990750 |
Filed Date | 2010-10-28 |
United States Patent
Application |
20100269255 |
Kind Code |
A1 |
Kanthasamy; Abedan |
October 28, 2010 |
SOFA BED WITH ROLL OUT BED MECHANISM
Abstract
A method and sofa for converting the sofa into a bed. A seat
back of a sofa bed is pulled and rolled out using roll out wheels
concealed underneath the seat back as they glide across a track
mechanism (also concealed underneath the seat back) until the roll
out wheels lock into place. The back rest is pushed down until the
back rest is level with the pulled-out seat bed thereby forming a
regular-sized bed. In this manner, a sofa bed may be easily
converted from the "sofa" position to the "bed" position while
forming a regular-sized bed.
Inventors: |
Kanthasamy; Abedan; (Kuala
Lumpur, MY) |
Correspondence
Address: |
WINSTEAD PC
P.O. BOX 50784
DALLAS
TX
75201
US
|
Assignee: |
Lifestyle Solutions, Inc.
Fremont
CA
|
Family ID: |
42990750 |
Appl. No.: |
12/428667 |
Filed: |
April 23, 2009 |
Current U.S.
Class: |
5/37.1 ;
5/12.1 |
Current CPC
Class: |
A47C 17/1655
20130101 |
Class at
Publication: |
5/37.1 ;
5/12.1 |
International
Class: |
A47C 17/04 20060101
A47C017/04; A47C 17/16 20060101 A47C017/16 |
Claims
1. A method for converting a sofa into a bed, the method
comprising: lifting up a seat deck of said sofa off the ground from
its resting horizontal position; pulling and rolling out said seat
deck until roll out wheels underneath said seat dock lock into
place; placing said seat deck back into its resting horizontal
position; and pushing down an approximately vertical back rest of
said sofa towards said pulled out seat deck until said back rest is
level with said pulled-out seat deck thereby forming a bed.
2. The method as recited in claim 1, wherein said bed is a
full-sized bed.
3. A sofa that converts into a bed, comprising: a frame that
includes a horizontal track mechanism; a horizontal seat deck
having a top side and a bottom side comprising at least two roll
out wheels attached to and engaged with said seat deck, wherein
said roll out wheels are placed on said track mechanism; and a back
rest rotatably engaged with said frame to allow rotation of said
back rest from an approximately vertical position to a horizontal
position; wherein upon said seat deck being pulled and rolled out,
said roll out wheels roll out along said track mechanism until said
roll out wheels are locked into place at a location on said track
mechanism furthest away from said back rest and upon said back rest
being collapsed into said horizontal position, a bed is formed.
4. The sofa as recited in claim 3, wherein two roll out wheels are
attached to two opposite back corners on the bottom side of said
seat deck, wherein said two opposite back corners are located
closest to said back rest.
5. The sofa as recited in claim 4, wherein said seat deck comprises
two legs attached to two front corners on the bottom side of said
seat deck, wherein said two front corners are located furthest away
from said back rest.
6. The sofa as recited in claim 3 further comprises: a right and a
left armrest, wherein said right and left armrests are each
connected to said frame via a metal hook plate attached to said
frame.
7. The sofa as recited in claim 6, wherein said right and left
armrests are each connected to said frame via two metal hook plates
attached to said frame.
8. The sofa as recited in claim 3, wherein said roll out wheels are
concealed beneath said seat deck.
9. The sofa as recited in claim 3, wherein said bed is a full-sized
bed.
10. The sofa as recited in claim 3, wherein said back rest is
rotatably engaged with said frame by using at least one hinge.
11. The sofa as recited in claim 10, wherein said at least one
hinge is a butterfly hinge.
12. A sofa that converts into a bed, comprising: a frame that
includes a horizontal track mechanism; a horizontal seat deck
having a top side and a bottom side comprising at least two roll
out wheels attached to and engaged with said seat deck, wherein
said roll out wheels are placed on said track mechanism; a back
rest rotatably engaged with said frame to allow rotation of said
back rest from an approximately vertical position to a horizontal
position, wherein said back rest is rotatably engaged with said
frame by using at least one hinge; and a left and a right armrest,
wherein said right and left armrests are each connected to said
frame via a metal hook plate attached to said frame; wherein upon
said seat deck being pulled and rolled out, said roll out wheels
roll out along said track mechanism until said roll out wheels are
locked into place at a location on said track mechanism furthest
away from said back rest and upon said back rest being collapsed
into said horizontal position, a bed is formed.
13. The sofa as recited in claim 12, wherein two roll out wheels
are attached to two opposite back corners on the bottom side of
said seat deck, wherein said two opposite back corners are located
closest to said back rest.
14. The sofa as recited in claim 13, wherein said seat deck
comprises two legs attached to two front corners on the bottom side
of said seat deck, wherein said two front corners are located
furthest away from said back rest.
15. The sofa as recited in claim 12, wherein said right and left
armrests are each connected to said frame via two metal hook plates
attached to said frame.
16. The sofa as recited in claim 12, wherein said roll out wheels
are concealed beneath said seat deck.
17. The sofa as recited in claim 12, wherein said bed is a
full-sized bed.
18. The sofa as recited in claim 12, wherein said at least one
hinge is a butterfly hinge.
Description
TECHNICAL FIELD
[0001] The present invention relates to sofa beds, and more
particularly to a sofa bed with a roll out mechanism under its seat
deck used in connection with convenient roll out wheels that are
concealed beneath the seat deck.
BACKGROUND OF THE INVENTION
[0002] A sofa is an upholstered item of furniture for the
comfortable seating of more than one person and typically has an
armrest on both sides of the sofa along with a back rest. Sofas are
usually to be found in the family room, living room, den or the
lounge. They are covered in a variety of textiles or in
leather.
[0003] Sofas may be convertible into a bed. This type of furniture
is often referred to as a "sofa bed." Many of these sofas require
substantial effort to open the sofa, to convert the sofa to a bed
or to close the bed to form a sofa. The substantial effort may be
due in part to having the frames require intricate mechanisms to
maintain the bed in a rigid position when the sofa is open into a
bed and to maintain the sofa back and seat firmly in position when
the sofa is in the closed position.
[0004] Further, when these sofas are converted into a bed, the size
of the bed is small, much smaller than a typical sized bed. People
often prefer sleeping in a "regular bed," such as a full-size
bed.
[0005] Hence, there is a need in the art for a sofa bed that can be
easily converted to a bed as well as easily returned to the sofa
position. Further, there is a need in the art for a sofa bed which
can be converted into a regular bed, such as a full-sized bed. In
addition, there is a need for a sofa bed that retains the good
qualities of a sofa, when the sofa bed is in the sofa position, and
retains the good qualities of a bed, when the sofa bed is in the
bed position.
BRIEF SUMMARY OF THE INVENTION
[0006] In one embodiment of the present invention, a method for
converting a sofa into a bed comprises lifting up a seat deck of
the sofa off the ground from its resting horizontal position. The
method further comprises pulling and rolling out the seat deck
until roll out wheels underneath the seat dock lock into place.
Additionally, the method comprises placing the seat deck back into
its resting horizontal position. Furthermore, the method comprises
pushing down an approximately vertical back rest of the sofa
towards the pulled out seat deck until the back rest is level with
the pulled-out seat deck thereby forming a bed.
[0007] In another embodiment of the present invention, a sofa that
converts into a bed, comprises a frame that includes a horizontal
track mechanism. The sofa further comprises a horizontal seat deck
having a top side and a bottom side comprising at least two roll
out wheels attached to and engaged with the seat deck, where the
roll out wheels are placed on the track mechanism. Additionally,
the sofa comprises a back rest rotatably engaged with the frame to
allow rotation of the back rest from an approximately vertical
position to a horizontal position. Upon the seat deck being pulled
and rolled out, the roll out wheels roll out along the track
mechanism until the roll out wheels are locked into place at a
location on the track mechanism furthest away from the back rest
and upon the back rest being collapsed into the horizontal
position, a bed is formed.
[0008] In another embodiment of the present invention, a sofa that
converts into a bed, comprises a frame that includes a horizontal
track mechanism. The sofa further comprises a horizontal seat deck
having a top side and a bottom side comprising at least two roll
out wheels attached to and engaged with the seat deck, where the
roll out wheels are placed on the track mechanism. In addition, the
sofa comprises a back rest rotatably engaged with the frame to
allow rotation of the back rest from an approximately vertical
position to a horizontal position, where the back rest is rotatably
engaged with the frame by using at least one hinge. Furthermore,
the sofa comprises a left and a right armrest, where the right and
left armrests are each connected to the frame via a metal hook
plate attached to the frame. Upon the seat deck being pulled and
rolled out, the roll out wheels roll out along the track mechanism
until the roll out wheels are locked into place at a location on
the track mechanism furthest away from the back rest and upon the
back rest being collapsed into the horizontal position, a bed is
formed.
[0009] The foregoing has outlined rather generally the features and
technical advantages of one or more embodiments of the present
invention in order that the detailed description of the present
invention that follows may be better understood. Additional
features and advantages of the present invention will be described
hereinafter which may form the subject of the claims of the present
invention.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING
[0010] A better understanding of the present invention can be
obtained when the following detailed description is considered in
conjunction with the following drawings, in which:
[0011] FIG. 1 illustrates a view of a sofa bed in accordance with
an embodiment of the present invention;
[0012] FIG. 2 is a flowchart of a method for converting the sofa
bed from the "sofa" position to the "bed" position in accordance
with an embodiment of the present invention;
[0013] FIG. 3 illustrates pulling out the seat deck in accordance
with an embodiment of the present invention;
[0014] FIG. 4 illustrates a tracking mechanism concealed underneath
a seat deck in accordance with an embodiment of the present
invention;
[0015] FIGS. 4A-D illustrate close-up views of a butterfly hinge, a
roll-out wheel and a metal plate in accordance with an embodiment
of the present invention;
[0016] FIG. 5 illustrates a close-up view of the frame being
connected to the back rest and armrests in accordance with an
embodiment of the present invention;
[0017] FIGS. 5A-B illustrate close-up views of a butterfly hinge
and a metal hook plate in accordance with an embodiment of the
present invention;
[0018] FIG. 6 illustrates pushing down and collapsing the back rest
to be level with the seat deck in accordance with an embodiment of
the present invention; and
[0019] FIG. 7 illustrates a regular-sized bed formed upon
collapsing the back rest to be level with the seat deck in
accordance with an embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
[0020] The present invention comprises a method and sofa for
converting the sofa into a bed. In one embodiment of the present
invention, a seat back of a sofa bed is pulled and rolled out using
roll out wheels concealed underneath the seat back as they glide
across a track mechanism (also concealed underneath the seat back)
until the roll out wheels lock into place. The back rest is pushed
down until the back rest is level with the pulled-out seat bed
thereby forming a regular-sized bed. In this manner, a sofa bed may
be easily converted from the "sofa" position to the "bed" position
while forming a regular-sized bed.
[0021] In the following description, numerous specific details are
set forth to provide a thorough understanding of the present
invention. However, it will be apparent to those skilled in the art
that the present invention may be practiced without such specific
details.
[0022] As discussed in the Background section, sofas may be
convertible into a bed. This type of furniture is often referred to
as a "sofa bed." Many of these sofas require substantial effort to
open the sofa, to convert the sofa to a bed or to close the bed to
form a sofa. The substantial effort may be due in part to having
the frames require intricate mechanisms to maintain the bed in a
rigid position when the sofa is open into a bed and to maintain the
sofa back and seat firmly in position when the sofa is in the
closed position. Further, when these sofas are converted into a
bed, the size of the bed is small, much smaller than a typical
sized bed. People often prefer sleeping in a "regular bed," such as
a full-size bed. Hence, there is a need in the art for a sofa bed
that can be easily converted to a bed as well as easily returned to
the sofa position. Further, there is a need in the art for a sofa
bed which can be converted into a regular bed, such as a full-sized
bed. In addition, there is a need for a sofa bed that retains the
good qualities of a sofa, when the sofa bed is in the sofa
position, and retains the good qualities of a bed, when the sofa
bed is in the bed position.
[0023] The sofa bed of the present invention can be easily
converted to a bed as well as easily returned to the sofa position
as discussed below in connection with FIGS. 1-4, 4A-D, 5, 5A-B, 6
and 7. Further, the sofa bed of the present invention can be
converted to a regular-sized bed, such as a full-sized bed, as
discussed below in connection with FIGS. 1-4, 4A-D, 5, 5A-B, 6 and
7.
[0024] FIG. 1 illustrates a view of the sofa bed. FIG. 2 is a
flowchart of a method for converting the sofa of the present
invention into a bed. FIG. 3 illustrates pulling out the seat deck.
FIG. 4 illustrates the tracking mechanism and roll-out wheels of
the sofa bed. FIGS. 4A-D illustrate close-up views of a butterfly
hinge, a roll-out wheel and a metal plate. FIG. 5 illustrates a
close-up view of the frame being connected to the back rest and
armrests. FIGS. 5A-B illustrate close-up views of a butterfly hinge
and a metal hook plate. FIG. 6 illustrates pushing down and
collapsing the back rest to be level with the seat deck. FIG. 7
illustrates a regular-sized bed being formed upon collapsing the
back rest to be level with the seat deck.
[0025] Referring to FIG. 1, FIG. 1 illustrates a sofa bed 100 in
accordance with an embodiment of the present invention. Sofa bed
100 may include two main sections, a seat deck 101 and a back rest
102. Seat deck 101 is used primarily for sitting by the user of
sofa bed 100. Back rest 102 is used primarily for resting the back
of the user of sofa bed 100. Sofa bed 100 may further include
pillows 103A-B placed in front of back rest 102 to add comfort to
the user of sofa bed 100 when the user sits on seat deck 101.
Pillows 103A-B may collectively or individually be referred to as
pillows 103 or pillow 103, respectively.
[0026] Additionally, sofa bed 100 may include armrests 104A-B used
primarily to rest the arms of the user of sofa bed 100. Armrests
104A-B may collectively or individually be referred to as armrests
104 or armrest 104, respectively. Armrests 104 may be connected to
the frame via a metal hook plate as discussed further below in
connection with FIG. 5.
[0027] Referring again to FIG. 1, seat deck 101 may include two
front legs 105A-B to provide support to seat deck 101 when a user
sits on seat deck 101. In one embodiment, legs 105A-B are connected
to the two front corners on the bottom side of seat deck 101.
Concealed underneath seat deck 101 is a track mechanism that is
used to allow seat deck 101 to roll away from or roll towards back
rest 102 using roller wheels concealed underneath seat deck 101 as
explained and illustrated in further detail below.
[0028] Sofa bed 100 is not to be limited in scope to any one
particular embodiment. Sofa bed 100 may include other components
than depicted. Further, certain components depicted, such as
pillows 103, may not be required for the functionality of sofa bed
100.
[0029] A method for converting sofa bed 100 from a "sofa" position
to a "bed" position is discussed below in connection with FIG.
2.
[0030] Referring to FIG. 2, FIG. 2 is a flowchart of a method 200
for converting a sofa into a bed in accordance with an embodiment
of the present invention. FIG. 2 will be discussed in conjunction
with FIGS. 3-4, 4A-D, 5, 5A-B and 6-7, which depict various views
of sofa bed 100 of the present invention during the converting
steps described in FIG. 2 in accordance with an embodiment of the
present invention.
[0031] Referring to FIG. 2, in conjunction with FIGS. 3-4, 4A-D, 5,
5A-B and 6-7, in step 201, seat deck 101 is lifted off the ground
(e.g., approximately 10 centimeters off the ground) from its
resting horizontal position.
[0032] In step 202, seat deck 101 is pulled and rolled out until
the roll out wheels are locked into position as illustrated in
FIGS. 3 and 4.
[0033] FIG. 3 illustrates rolling and pulling out seat deck 101 in
accordance with an embodiment of the present invention. FIG. 3
further illustrates a frame 302 that includes a tracking mechanism
301 concealed underneath seat deck 101 in accordance with an
embodiment of the present invention. FIG. 3 further illustrates
that back rest 102 is rotatably engaged with frame 302, such as via
the use of a butterfly hinge as discussed below in connection with
FIGS. 4, 4A, 5, 5A and 6, to allow rotation of back rest 102 from
an approximately vertical position to a horizontal position. Once
seat deck 101 is lifted off the ground, seat deck 101 is able to be
pulled and rolled out using the roll-out wheels concealed
underneath seat deck 101 as illustrated in FIG. 4 in accordance
with an embodiment of the present invention. In one embodiment, a
roll-out wheel 401 is placed on the two bottom corners of seat deck
101 located on the side closest to back rest 102 as illustrated in
FIGS. 4 and 4B. These roll-out wheels 401 may simply glide smoothly
on track mechanism 301 to provide ease of movement of seat deck
101. FIGS. 4, 4A, 5 and 5A further illustrate that a butterfly
hinge 402 may be used to firmly connect frame 302 with back rest
102 as well as to allow rotation of back rest 102 from an
approximately vertical position to a horizontal position. In one
embodiment, two butterfly hinges 402 are used to firmly connect
frame 302 with back rest 102 at two locations (opposite ends of
back rest 102). It is noted that FIGS. 4 and 4A only illustrate the
use of butterfly hinge 402 at one particular end of back rest 102;
however, another butterfly hinge 402 may be used at the other end
of back rest 102, as illustrated in FIG. 5. Also, FIGS. 4, 4C and
4D illustrates a metal plate 403 attached to the back bottom of
armrest 104 to provide support for back rest 102. Further, in one
embodiment, each armrest 104 may include a metal plate 403 to
provide support/strength to back reset 102. In one embodiment,
metal plate 403 can be flipped under armrest 104 when in the "bed"
position as illustrated in FIG. 4D. Additionally, in one
embodiment, armrests 104 may be connected to frame 302 via a metal
hook plate 501 as illustrated in FIGS. 5 and 5B. In one embodiment,
right and left armrests 104 are each connected to frame 302 via two
metal hook plates 501 attached to frame 302 as illustrated in FIG.
5.
[0034] Returning to FIG. 2, in conjunction with FIGS. 3-4, 4A-D, 5,
5A-B and 6-7, in step 203, seat deck 101 is placed into its resting
horizontal position.
[0035] In step 204, back rest 102 is pushed down towards the pulled
out seat deck 101 until back rest 102 is level with the pulled out
seat deck 101 thereby forming a regular-sized bed as illustrated in
FIGS. 6 and 7. FIG. 6 illustrates pushing down and collapsing back
rest 102 to be level with seat deck 101 in accordance with an
embodiment of the present invention. FIG. 7 illustrates a
regular-sized bed, such as a full-sized bed, being formed upon
collapsing back rest 102 to be level with seat deck 101.
[0036] As a result of the above, it has been shown that sofa bed
100 can be easily converted from the "sofa" position to the "bed"
position and that it can be converted to a regular-sized bed, such
as a full-sized bed. Sofa bed 100 may be returned to the original
"sofa" position by reversing the steps outlined above, such as by
pulling up back rest 102 to its normal vertical resting position;
and pushing and rolling seat deck 101 back towards back rest 102
until roll-out wheels 501 are locked into position.
[0037] Method 200 may include other and/or additional steps that,
for clarity, are not depicted. Further, method 200 may be executed
in a different order presented and the order presented in the
discussion of FIG. 2 is illustrative. Additionally, certain steps
in method 200 may be executed in a substantially simultaneous
manner or may be omitted.
[0038] Although the method and sofa bed are described in connection
with several embodiments, it is not intended to be limited to the
specific forms set forth herein, but on the contrary, it is
intended to cover such alternatives, modifications and equivalents,
as can be reasonably included within the spirit and scope of the
invention as defined by the appended claims.
* * * * *