US20190150624A1 - Articulated back sofa bed - Google Patents
Articulated back sofa bed Download PDFInfo
- Publication number
- US20190150624A1 US20190150624A1 US16/253,990 US201916253990A US2019150624A1 US 20190150624 A1 US20190150624 A1 US 20190150624A1 US 201916253990 A US201916253990 A US 201916253990A US 2019150624 A1 US2019150624 A1 US 2019150624A1
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- Prior art keywords
- sofa bed
- mattress
- link
- attached
- seat
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C17/00—Sofas; Couches; Beds
- A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
- A47C17/16—Seating furniture changeable to beds by tilting or pivoting the back-rest
- A47C17/20—Seating furniture changeable to beds by tilting or pivoting the back-rest thereby uncovering one or more auxiliary parts previously hidden
- A47C17/207—Seating furniture changeable to beds by tilting or pivoting the back-rest thereby uncovering one or more auxiliary parts previously hidden with seat cushion consisting of multiple superposed parts, at least one lower hidden part being used to form part of the bed surface
- A47C17/2076—Seating furniture changeable to beds by tilting or pivoting the back-rest thereby uncovering one or more auxiliary parts previously hidden with seat cushion consisting of multiple superposed parts, at least one lower hidden part being used to form part of the bed surface by lifting or tilting
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C17/00—Sofas; Couches; Beds
- A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
- A47C17/16—Seating furniture changeable to beds by tilting or pivoting the back-rest
- A47C17/17—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat
- A47C17/175—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat with tilting or lifting seat-back-rest pivot
- A47C17/1756—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat with tilting or lifting seat-back-rest pivot by pivoted linkages
Definitions
- the present invention relates generally to a furniture assembly, and more particularly, to a sofa bed or convertible bed having an articulated back permitting deployment and storage of the bed mechanism with minimal extension into a non-furniture area of the environment.
- An articulated back sofa bed has a top pivoted back that is aligned at a downwardly forwardly aligned angle in a sitting position.
- the back is pivoted to the top of a vertical frame.
- a mattress supporting frame is stowed underneath the back and becomes the sofa cushion support surface.
- an articulation mechanism displaces the seat back rearwardly, to a downwardly rearwardly aligned angle, thereby providing clearance for deployment of the mattress supporting frame clear of the bottom of the back.
- the crest of curvature of the deployment of the mattress supporting frame is formed and arranged so that the rearward displacement of the back provides sufficient clearance to accomplish the deployment, while the top pivot is fixed to the vertical frame.
- the rearward displacement of the back is accomplished by a series of links between the mattress support frame and the bottom of the back. This design allows for a compact overall footprint for the sofa.
- a sofa bed is usually a sofa with a seating surface, a back surface, and arms, which includes a foldable bed located in the area below the seating surface.
- a sofa When being used as a sofa, it appears as any regular sofa designed for seating.
- the user wishes to use the sofa bed to convert to a bed, he typically removes the seat and back cushions and pulls out and unfolds the foldable bed mechanism contained within. Examples of this type of arrangement are disclosed in U.S. Pat. Nos. 2,644,171 and 3,975,783.
- the mattress is typically thin so that it may be folded when the bed is stored in the sofa.
- This thin mattress is supported by a metal frame work between which is spread a fabric.
- the fabric provides insufficient support causing the sleeping surface to sag while the rigid metal frame work causes ridges of hardness.
- the combination of the sag and the ridges provides an uncomfortable sleeping surface.
- the cushions are light in weight, but they are bulky and must be stored somewhere while the bed is in use.
- the sofa has back cushions, those must be stored as well. Furniture may also have to be moved in order to deploy the bed as is the case if a coffee table is located in front of the sofa. Essentially the entire bed mechanism extends outwardly into a room or vehicle area or the like requiring substantial space in front of the fixed back.
- Another type of sofa bed utilizes the rear of the seat back as the sleeping surface.
- the seat back is usually mounted on a pivot so that the seat back can be rotated to a horizontal position so that the front surface faces down and the rear surface faces up.
- This type of assembly is disclosed in U.S. Pat. No. 4,106,137.
- This arrangement provides a better sleeping surface than the former as the bed or mattress does not need to be foldable. This does away with the associated folding metal framework that caused ridges of hardness across the sleeping surface.
- Another advantage is that the furniture does not need to be moved relative to the floor or room wall to deploy the bed. However, this arrangement is not without its disadvantages as the seat cushions and any back cushions must still be removed to deploy the bed.
- sofa beds and lounge chairs are intended to be situated in certain locations.
- a sofa bed may be configured for placement against a wall.
- US Application Pub. No. 20040051350 and Pat. No. 8,806,672 are examples.
- the back frame is fixed, but hollow, to receive part of the mattress.
- the present invention solves the problems described above.
- the sofa bed described herein provides a superior sleeping surface over that of the foldable beds.
- the sofa bed is easily convertible from the seating configuration to the sleeping configuration without the need for a hollow back or undue need for space for extension into living space due to the articulation of the back to provide clearance for the bed mechanism. Where total space is at a premium, it is wasted by the fixed, spaced, or hollow backs in the prior art.
- FIG. 1 is a side elevation of the articulated back sofa bed in a seating position.
- FIG. 2 is a side elevation of the articulated back sofa bed in an intermediate position.
- FIG. 3 is a side elevation of the articulated back sofa bed in a mattress frame deployment position.
- FIG. 4 is a perspective view of the articulated back sofa with the sleep mechanism removed for clarity.
- FIG. 5 is a side elevation of the linkage mechanism.
- FIG. 6 is a side elevation of the articulated back sofa showing the fitting of the sleep mechanism.
- An articulated back sofa bed 10 has a top pivoted back frame 12 that is aligned at a downwardly forwardly aligned angle in a sitting position.
- the mattress mechanism 14 is stowed.
- the seat supporting frame portion 16 of the mattress mechanism 14 serves as the support surface for seat cushion 18 when in the stowed position.
- Seat supporting frame portion 16 is pivotally connected to sleeper side frame 20 with an intermediate portion 17 so that frame portion 16 can be opened and inverted to combine with sleeper side frame 20 to provide a complete mattress supporting surface when the sofa bed is in a bed position.
- front, rear and side may refer, in context, to the orientation of a person using the sofa sleeper in the condition for use, thus when sitting, the arms 22 will be at the “side” but when in the sleep position, because the person will sleep between the arms, both the deployed frames 16 and 20 are oriented toward the person's “sides”.
- Mattress mechanism 14 with frames 16 and 20 folded, is stowed between the arms 22 and front panel 24 and vertical frame 34 .
- sofa bed 10 is formed of fixed side plates or legs 32 , a fixed, vertical frame 34 and front panel. Arms 22 may be independent and attached to plates or legs 32 , or plates or legs 32 could be configured so as to extend upwardly to form arms. Frame 34 is intended to abut a wall or bulkhead with minimal displacement from spacer 36 .
- Articulation mechanism 38 displaces the seat back 12 about pivot 40 so that the bottom of back 12 moves rearwardly. More particularly mechanism 38 is formed and arranged with bracket 42 attached to side plates or legs 32 . Pivotally attached to bracket 42 is C-shaped link 44 having a top arm 46 , center portion 48 and lower arm 50 . Link 44 acts through thrust link 52 which is horizontally offset. Thrust link 52 is, in turn, pivotally attached to angled link 54 . Link 54 is formed with lower portion 56 , center portion 58 and upper portion 60 . Link 54 is pivotally mounted to bracket 62 , itself mounted to back 12 .
- This motion causes back 12 to rotate on pivot 40 so that the lower portion of back 12 retracts rearwardly, thereby providing clearance for mechanism 14 to be fully deployed to a sleeping position. Resistance against this movement and return force, as mechanism 14 is stowed, is provided by extension spring 80 .
- the back 12 is fully rearwardly positioned, thereby providing clearance for deployment of the mattress mechanism 14 clear of the bottom of the back 12 .
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nursing (AREA)
- Special Chairs (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
Abstract
An articulated back sofa bed has a top pivoted back that is aligned at a downwardly forwardly aligned angle in a sitting position and, when a mattress supporting frame is deployed to a bed position an articulation mechanism displaces the seat back rearwardly, to a downwardly rearwardly aligned angle, thereby providing clearance for deployment of the mattress supporting frame clear of the bottom of the back, thereby allowing for a compact overall footprint for the sofa.
Description
- This application claims priority on
Provisional Application 62/085,987 filed Dec. 1, 2014 and having the same inventor and title as the present application. - The present invention relates generally to a furniture assembly, and more particularly, to a sofa bed or convertible bed having an articulated back permitting deployment and storage of the bed mechanism with minimal extension into a non-furniture area of the environment.
- An articulated back sofa bed has a top pivoted back that is aligned at a downwardly forwardly aligned angle in a sitting position. The back is pivoted to the top of a vertical frame. A mattress supporting frame is stowed underneath the back and becomes the sofa cushion support surface. As the mattress supporting frame is deployed to a bed position an articulation mechanism displaces the seat back rearwardly, to a downwardly rearwardly aligned angle, thereby providing clearance for deployment of the mattress supporting frame clear of the bottom of the back. The crest of curvature of the deployment of the mattress supporting frame is formed and arranged so that the rearward displacement of the back provides sufficient clearance to accomplish the deployment, while the top pivot is fixed to the vertical frame. The rearward displacement of the back is accomplished by a series of links between the mattress support frame and the bottom of the back. This design allows for a compact overall footprint for the sofa.
- A sofa bed is usually a sofa with a seating surface, a back surface, and arms, which includes a foldable bed located in the area below the seating surface. When being used as a sofa, it appears as any regular sofa designed for seating. When the user wishes to use the sofa bed to convert to a bed, he typically removes the seat and back cushions and pulls out and unfolds the foldable bed mechanism contained within. Examples of this type of arrangement are disclosed in U.S. Pat. Nos. 2,644,171 and 3,975,783.
- These sofa beds, while providing a convenient way to provide for overnight guests, have their disadvantages. The mattress is typically thin so that it may be folded when the bed is stored in the sofa. This thin mattress is supported by a metal frame work between which is spread a fabric. Often times the fabric provides insufficient support causing the sleeping surface to sag while the rigid metal frame work causes ridges of hardness. The combination of the sag and the ridges provides an uncomfortable sleeping surface. Further, there is the matter of storing the sofa cushions that are removed. To access and deploy the bed, the seat cushion of the sofa must be removed. The cushions are light in weight, but they are bulky and must be stored somewhere while the bed is in use. Likewise, if the sofa has back cushions, those must be stored as well. Furniture may also have to be moved in order to deploy the bed as is the case if a coffee table is located in front of the sofa. Essentially the entire bed mechanism extends outwardly into a room or vehicle area or the like requiring substantial space in front of the fixed back.
- Another type of sofa bed utilizes the rear of the seat back as the sleeping surface. The seat back is usually mounted on a pivot so that the seat back can be rotated to a horizontal position so that the front surface faces down and the rear surface faces up. This type of assembly is disclosed in U.S. Pat. No. 4,106,137. This arrangement provides a better sleeping surface than the former as the bed or mattress does not need to be foldable. This does away with the associated folding metal framework that caused ridges of hardness across the sleeping surface. Another advantage is that the furniture does not need to be moved relative to the floor or room wall to deploy the bed. However, this arrangement is not without its disadvantages as the seat cushions and any back cushions must still be removed to deploy the bed. While this may not be an onerous burden to all, there may not be a convenient place to store the cushions. If the bed is being used in a hotel where housekeeping staff is expected to prepare the bedding, time may be lost in removing or replacing the cushions each time the bedding is changed. Likewise, a hotel guest does not want to be burdened with a cumbersome conversion from one configuration to the other and storage of seating components such as cushions. When used in a vehicle, in particular, storage of extraneous, unused components is difficult.
- In addition, many sofa beds and lounge chairs are intended to be situated in certain locations. For example, a sofa bed may be configured for placement against a wall. US Application Pub. No. 20040051350 and Pat. No. 8,806,672 are examples. In both of these the back frame is fixed, but hollow, to receive part of the mattress. These exemplify the need for the piece of furniture to be located proximate a wall to maximize living space in a room or vehicle, but still require extension of the mechanism into the living space and a fixed back frame.
- The present invention solves the problems described above. The sofa bed described herein provides a superior sleeping surface over that of the foldable beds. The sofa bed is easily convertible from the seating configuration to the sleeping configuration without the need for a hollow back or undue need for space for extension into living space due to the articulation of the back to provide clearance for the bed mechanism. Where total space is at a premium, it is wasted by the fixed, spaced, or hollow backs in the prior art.
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FIG. 1 is a side elevation of the articulated back sofa bed in a seating position. -
FIG. 2 is a side elevation of the articulated back sofa bed in an intermediate position. -
FIG. 3 is a side elevation of the articulated back sofa bed in a mattress frame deployment position. -
FIG. 4 is a perspective view of the articulated back sofa with the sleep mechanism removed for clarity. -
FIG. 5 is a side elevation of the linkage mechanism. -
FIG. 6 is a side elevation of the articulated back sofa showing the fitting of the sleep mechanism. - An articulated
back sofa bed 10 has a top pivotedback frame 12 that is aligned at a downwardly forwardly aligned angle in a sitting position. InFIG. 1 themattress mechanism 14 is stowed. The seat supportingframe portion 16 of themattress mechanism 14 serves as the support surface forseat cushion 18 when in the stowed position. Seat supportingframe portion 16 is pivotally connected tosleeper side frame 20 with anintermediate portion 17 so thatframe portion 16 can be opened and inverted to combine withsleeper side frame 20 to provide a complete mattress supporting surface when the sofa bed is in a bed position. It will be noted that the relative terms front, rear and side may refer, in context, to the orientation of a person using the sofa sleeper in the condition for use, thus when sitting, thearms 22 will be at the “side” but when in the sleep position, because the person will sleep between the arms, both the deployed frames 16 and 20 are oriented toward the person's “sides”.Mattress mechanism 14, withframes arms 22 andfront panel 24 and vertical frame 34. - In
FIG. 2 , as compared toFIG. 1 , cushions 18, 26 can be removed and themattress mechanism 14 deployment to a bed position accomplished.Mechanism 14travels using linkage 30. Inparticular sofa bed 10 is formed of fixed side plates orlegs 32, a fixed, vertical frame 34 and front panel.Arms 22 may be independent and attached to plates orlegs 32, or plates orlegs 32 could be configured so as to extend upwardly to form arms. Frame 34 is intended to abut a wall or bulkhead with minimal displacement fromspacer 36. -
Articulation mechanism 38 displaces the seat back 12 aboutpivot 40 so that the bottom of back 12 moves rearwardly. More particularlymechanism 38 is formed and arranged withbracket 42 attached to side plates orlegs 32. Pivotally attached tobracket 42 is C-shapedlink 44 having atop arm 46,center portion 48 andlower arm 50.Link 44 acts throughthrust link 52 which is horizontally offset. Thrust link 52 is, in turn, pivotally attached toangled link 54.Link 54 is formed withlower portion 56,center portion 58 andupper portion 60.Link 54 is pivotally mounted tobracket 62, itself mounted to back 12. - In operation, as shown in
FIGS. 2, 3 and 6 , as the front ofmattress mechanism 14 is lifted, therear mount 15 ofmattress mechanism 14 moves downwardly, and rearwardly actuating C-shapedlink 44 proximate the intersection ofcenter 48 andarm 50. - This movement rotates C-shaped
link 44 around its fixed pivot 64 at bracket fixedpivot 66 and accordingly,translational pivot 68 is pulled, withlink 52 moving generally horizontally, in turn pullingtranslational pivot 70 andlower portion 56. As lower portion moves,angled link 54 rotates about second fixedpivot 72. Thus, aslink 52 moves forwardly, relative to the sofa, leftward inFIG. 5 , so moveslower portion 56, whiletop portion 58 moves rearwardly (rightward inFIG. 5 ). As this movement takes place, theend 74 oftop portion 58 is slidably engaged in aroller slot 76 in back 12 by, preferably, pinned or otherwise fastened roller 78. This motion causes back 12 to rotate onpivot 40 so that the lower portion of back 12 retracts rearwardly, thereby providing clearance formechanism 14 to be fully deployed to a sleeping position. Resistance against this movement and return force, asmechanism 14 is stowed, is provided byextension spring 80. - In
FIG. 3 the back 12 is fully rearwardly positioned, thereby providing clearance for deployment of themattress mechanism 14 clear of the bottom of the back 12.
Claims (18)
1. An sofa bed has a top pivoted back frame aligned at a downwardly forwardly aligned angle when the sofa bed is in a sitting position and a mattress mechanism is in a stowed position between arm of the sofa bed;
a seat supporting frame portion of the mattress mechanism serves as the support surface for seat cushion when in said stowed position;
a mattress mechanism is formed of a to seat supporting frame portion pivotally connected to an intermediate portion and a sleeper side frame such that the mattress mechanism can be stowed and unfolded;
said mattress mechanism moves between a stowed and unfoldable position a linkage;
said sofa bed has a frame formed of fixed side plates, a fixed, vertical frame and front panel with arms projecting from plates;
said sofa bed has a seat back mounted to a vertical frame and actuated by an articulation mechanism that displaces said seat back about a pivot so that the bottom of back moves rearwardly;
said articulation mechanism has a first bracket attached to said plates of said sofa bed;
said articulation mechanism has a C-shaped link having a top arm, center portion and lower arm is pivotally attached to said bracket;
said C-shaped link acts through horizontally offset thrust link, which thrust link is pivotally attached to an angled link;
said angled link is formed with a lower portion, center portion and upper portion and said angled link is pivotally mounted to a second bracket;
said second bracket being mounted to the back of the sofa bed whereby movement of said mattress supporting frame actuates said C-shape link to act through said mechanism to retract the back of the sofa bed to provide clearance to move said mattress supporting frame from a stowed, seating position to a mattress deployable position;
said back articulation motion urged by said articulation mechanism is effected using the end of said top portion in slidable engagement in a roller slot in said seat back so that motion of said top portion causes said back to rotate on said pivot so that the lower portion of back retracts rearwardly, thereby providing clearance for mechanism to be fully deployed from a seating position to a mattress deployable position.
2. A sofa bed comprising:
a top pivoted back aligned at a downwardly forwardly aligned angle when said sofa bed is in a sitting position;
said back is pivoted to the top of a vertical frame;
a mattress supporting frame is arranged to be stowed underneath said back and when folded and stowed in the sitting position is adapted to serve as a sofa cushion support surface;
said mattress supporting frame is deployable from to a bed position to a downwardly rearwardly aligned angle adapted to actuate an articulation mechanism which is adapted to displace the seat back rearwardly when so deployed;
said rearward seat back displacement is adapted to provide clearance for deployment of the mattress supporting frame clear of the bottom of the back.
3. The sofa bed of claim 2 further comprising the crest of curvature of the deployment of the mattress supporting frame is formed and arranged so that the rearward displacement of the back provides sufficient clearance to accomplish the deployment, while the top pivot is fixed to the vertical frame.
4. The sofa bed of claim 3 further comprising the rearward displacement of the back is accomplished by a series of links between the mattress support frame and the bottom of the back.
5. The sofa bed of claim 4 further comprising:
said links form a mechanism having a first bracket attached to side plates of said sofa bed;
said mechanism has a C-shaped link having a top arm, center portion and lower arm, which lower arm is pivotally attached to said bracket;
said C-shaped link acts through horizontally offset thrust link, which thrust link is pivotally attached to an angled link;
said angled link is formed with a lower portion, center portion and upper portion and said angled link is pivotally mounted to a second bracket;
said second bracket being mounted to the back of the sofa bed whereby movement of said mattress supporting frame actuates said C-shape link to act through said mechanism to retract the back of the sofa bed to provide clearance to move said mattress supporting frame from a stowed, seating position to a mattress deployable position.
6. The sofa bed of claim 5 further comprising:
said back articulation motion urged by said articulation mechanism is effected using the end of said top portion in slidable engagement in a roller slot in said seat back so that motion of said top portion causes said back to rotate on said pivot so that the lower portion of back retracts rearwardly, thereby providing clearance for mechanism to be fully deployed from a seating position to a mattress deployable position.
7. The sofa bed of claim 6 further comprising:
said articulation mechanism is urged into a position extending said back outward to a seating position by a spring, said spring resisting retraction of said back.
8. A sofa bed comprising:
a vertical frame;
a back pivotally attached to said vertical frame;
a leg supporting said vertical frame
a mattress mechanism including a sleeper portion and a seat supporting portion, said portions being pivotally connected to one another so that when stowed, the seat supporting portion is above the sleeper portion and the mattress mechanism is below said back;
said mattress mechanism is deployable by lifting the front causing the rear to be displaced rearwardly, so that said rear actuates an articulation mechanism that pivots said back rearwardly thereby providing clearance for said mattress mechanism to be opened.
9. The sofa bed of claim 8 further comprising:
said leg being a first leg and said vertical frame being a first vertical frame;
a second leg and vertical frame formed and arranged as a mirror image of said first leg and first vertical frame;
a spacer extending horizontally between said first and second legs;
a front panel attached said seat supporting portion and positioned substantially parallel to said spacer;
said first and second legs, spacer and panel defining an area in which said mattress mechanism is stowed when in the seating configuration.
10. The sofa bed of claim 8 further comprising:
a detachable back cushion attached on said back; and
a detachable seat cushion attached on said seat supporting portion.
11. The sofa bed of claim 8 , wherein said articulation mechanism comprises:
a thrust link;
a reverse C-shaped link pivotally attached to a first end of said thrust link and to a first fixed bracket;
an angled link pivotally attached to a second end of said thrust link, to a bottom of said back, and pivotally to a second fixed bracket.
12. The sofa bed of claim 11 , wherein said first fixed bracket is attached to a seat supporting portion and said second fixed bracket is attached to said vertical frame.
13. The sofa bed of claim 11 , wherein said angled link comprises:
a lower portion pivotally attached to said C-shaped link;
a center portion pivotally attached to said second fixed bracket; and
an upper portion attached to said back;
wherein said lower portion, said center portion, and said upper portion are connected with between right angles and straight angles.
14. The sofa bed of claim 11 , wherein said C-shaped link rotates around said first fixed bracket, said thrust link moves forwardly and horizontally, and said upper portion of said angled link moves rearwardly due to a pivot at said second fixed bracket and said center portion.
14. The sofa bed of claim 11 , wherein said upper portion is slidably engaged in a roller slot in said back.
15. The sofa bed of claim 11 , wherein said reverse C-shaped link comprises:
a top arm attached to said first fixed bracket;
a center arm; and
a lower arm attached to said thrust link.
16. The sofa bed of claim 11 , wherein said lower arm attached to an elongated shaft to control said back.
17. The sofa bed of claim 11 , wherein resistance against the movement of said back is provided by one or more extension springs.
Priority Applications (1)
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US16/253,990 US20190150624A1 (en) | 2014-12-01 | 2019-01-22 | Articulated back sofa bed |
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US201462085987P | 2014-12-01 | 2014-12-01 | |
US14/954,562 US10226131B2 (en) | 2014-12-01 | 2015-11-30 | Articulated back sofa bed |
US16/253,990 US20190150624A1 (en) | 2014-12-01 | 2019-01-22 | Articulated back sofa bed |
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US14/954,562 Division US10226131B2 (en) | 2014-12-01 | 2015-11-30 | Articulated back sofa bed |
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US10226131B2 (en) * | 2014-12-01 | 2019-03-12 | Flexsteel Industries, Inc. | Articulated back sofa bed |
US10772436B2 (en) | 2017-08-02 | 2020-09-15 | Michael Monir Tadros | Convertible sofa bed |
CN108784080B (en) * | 2018-06-04 | 2021-01-29 | 安徽省武狄家具有限公司 | Office chair |
CN109907574A (en) * | 2019-03-04 | 2019-06-21 | 珠海市意多傢私有限公司 | A kind of multi-functional couch |
CN111743345A (en) * | 2019-03-28 | 2020-10-09 | 佛山布同凡响家具有限公司 | Intelligent telescopic adjustment functional sofa |
US11134782B2 (en) | 2019-04-22 | 2021-10-05 | Grant Stousland | Flip lounge chair |
CN115500645B (en) * | 2022-08-25 | 2023-12-01 | 乐歌人体工学科技股份有限公司 | Back-pushing bed frame with power assistance and electric bed |
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Also Published As
Publication number | Publication date |
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US10226131B2 (en) | 2019-03-12 |
US20160150888A1 (en) | 2016-06-02 |
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