U.S. patent application number 16/522700 was filed with the patent office on 2021-01-28 for foldable leg assembly with screw feature for bedding or furniture.
This patent application is currently assigned to L&P Property Management Company. The applicant listed for this patent is L&P Property Management Company. Invention is credited to Jacob J. Neuenswander.
Application Number | 20210022515 16/522700 |
Document ID | / |
Family ID | 1000005326310 |
Filed Date | 2021-01-28 |
View All Diagrams
United States Patent
Application |
20210022515 |
Kind Code |
A1 |
Neuenswander; Jacob J. |
January 28, 2021 |
FOLDABLE LEG ASSEMBLY WITH SCREW FEATURE FOR BEDDING OR
FURNITURE
Abstract
A bedding or furniture product comprises a foldable leg assembly
movable between a folded position for storage or shipping the
product and a locked position for supporting the product in use.
The foldable leg assembly comprises a threaded connector adapted to
be securable to a frame of the product and a linkage member
pivotally coupled to the threaded connector to form a pivot joint
therebetween. The leg assembly further comprises a leg member
coaxially coupled to the linkage member and slideable therealong.
The leg member has a threaded inner surface adjacent to an upper
end configured to be threadably coupled to the threaded
connector.
Inventors: |
Neuenswander; Jacob J.;
(Carthage, MO) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
L&P Property Management Company |
South Gate |
CA |
US |
|
|
Assignee: |
L&P Property Management
Company
South Gate
CA
|
Family ID: |
1000005326310 |
Appl. No.: |
16/522700 |
Filed: |
July 26, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A47C 19/128 20130101;
A47B 2003/0824 20130101; A47B 3/08 20130101 |
International
Class: |
A47C 19/12 20060101
A47C019/12; A47B 3/08 20060101 A47B003/08 |
Claims
1. A leg assembly for use in a bedding or furniture product, the
leg assembly comprising: a threaded connector adapted to be
securable to a member of a frame of the product; a linkage member
pivotally coupled to the threaded connector to form a pivot joint
therebetween, the pivot joint having a pivot axis; and a leg member
coaxially coupled to the linkage member to define a linkage
assembly, the leg member being rotatable and slideable relative to
the linkage member and having a threaded inner surface adjacent to
an upper end configured to threadably couple to the threaded
connector; wherein the leg assembly is movable between a locked
position and a folded position, the threaded connector configured
to be stationary relative to the member of the frame regardless of
any one of the locked position and the folded position of the leg
assembly.
2. The leg assembly of claim 1, wherein when the leg assembly is in
the locked position, the leg member is threadably coupled to the
threaded connector such that the upper end of the leg member is
configured to abut the member of the frame, the linkage member,
pivot joint, and a portion of the threaded connector being disposed
within a cavity of the leg member.
3. The leg assembly of claim 1, wherein when the leg assembly is in
the folded position, a portion of the linkage member is disposed
within a cavity of the leg member and the linkage assembly is
pivotal about the pivot axis of the pivot joint to a position
substantially parallel to the member of the frame.
4. The leg assembly of claim 1, wherein the threaded connector is
secured to the member of the frame with at least one fastener.
5. The leg assembly of claim 1, wherein the leg member further
includes a cavity configured to telescopically receive the linkage
member, pivot joint, and a portion of the threaded connector
therein.
6. The leg assembly of claim 1, wherein the linkage assembly pivots
at least 90 degrees about the pivot axis of the pivot joint.
7. The leg assembly of claim 1, wherein when the leg member further
includes a lower end having an inner surface adjacent to the lower
end, the threaded inner surface adjacent to the upper end and the
inner surface adjacent to the lower end being separated by a
shoulder, the shoulder configured to abut the linkage member.
8. The leg assembly of claim 1, wherein the threaded connector
includes a boss extending from the threaded connector in an axial
direction and the linkage member includes a split connector
configured to receive the boss and be pivotally coupled
thereto.
9. The leg assembly of claim 1, wherein the linkage member and
threaded connector are pivotally coupled together with a pivot
pin.
10. The leg assembly of claim 1, wherein the threaded connector
further comprises an upper end configured to be received through a
bore in the member of the frame, the upper end of the threaded
connector having a recess configured to receive a fastener for
fixing the threaded connector to the member of the frame.
11. The leg assembly of claim 10, wherein the recess is threaded
and configured to receive a threaded fastener.
12. A leg assembly for use in a bedding or furniture product, the
leg assembly comprising: a threaded connector having a cylindrical
body provided with threads with an upper end extending in an axial
direction therefrom and a boss extending in an axial direction away
from the body and diametrically opposed from the upper end, the
threaded connector adapted to be securable to a member of a frame
of the product; a linkage member having a cylindrical base with a
body extending in an axial direction therefrom to a split
connector, the split connector having two arms defining a notch
configured to receive the boss of the threaded connector therein
such that the boss and split connector are pivotally coupled
together with a pivot pin to form a pivot joint having a pivot
axis; and a leg member coaxially coupled to the linkage member to
define a linkage assembly, the leg member being rotatable and
slideable relative to the linkage member and having a threaded
inner surface adjacent to an upper end configured to threadably
couple to the threaded connector; wherein the leg assembly is
movable between a locked position and a folded position.
13. The leg assembly of claim 12, wherein when the leg assembly is
in the locked position, the leg member is threadably coupled to the
threaded connector such that the upper end of the leg member is
configured to abut the frame, the linkage member, pivot joint, and
a portion of the threaded connector being disposed within a cavity
of the leg member.
14. The leg assembly of claim 12, wherein when the leg assembly is
in the folded position, a portion of the linkage member is disposed
within a cavity of the leg member and the linkage assembly is
pivotal about the pivot axis of the pivot joint to a position
substantially parallel to the member of the frame.
15. The leg assembly of claim 12, the leg member further including
a lower end having an inner surface adjacent to the lower end,
wherein the threaded inner surface adjacent to the upper end and
the inner surface adjacent to the lower end are separated by a
shoulder, the shoulder configured to be in a confronting
relationship with the linkage member.
16. The leg assembly of claim 15, wherein the linkage member
further includes an annular flange configured to abut the shoulder
of the leg member.
17. The leg assembly of claim 12, wherein the linkage assembly
pivots at least 90 degrees about the pivot axis of the pivot
joint.
18. A method of assembling a furniture or bedding product having a
leg assembly secured to a member of a frame, the method comprising:
providing a leg assembly having a threaded connector secured to the
member of the frame of the product, a linkage member pivotally
coupled to the threaded connector to form a pivot joint having a
pivot axis therebetween, and a leg member rotatably and slideably
coupled to the linkage member in a coaxial arrangement to define a
linkage assembly, the leg member having a threaded inner surface
adjacent to an upper end and being configured to threadably couple
to the threaded connector; pivoting the linkage assembly from a
folded position wherein the linkage member is substantially
parallel to the member of the frame about the pivot axis of the
pivot joint to align an axis of the linkage assembly with an axis
of the threaded connector; sliding the leg member upwardly towards
the threaded connector secured to the member of the frame disposing
a portion of the linkage member and a portion of threaded connector
within the leg member; and rotating the leg member about the
threaded connector until the upper end of the leg assembly abuts
the member of the frame, threadably coupling the leg member to the
threaded connector.
19. The method of claim 18, wherein pivoting the linkage assembly
about the pivot axis of the pivot joint includes pivoting the
linkage assembly at least 90 degrees about the pivot axis of the
pivot joint.
20. The method of claim 18, wherein sliding the leg member upwardly
towards the threaded connector secured to the member of the frame
includes telescopically receiving the linkage member, a portion of
the threaded connector, and pivot joint within a cavity of the leg
member.
Description
FIELD OF THE INVENTION
[0001] This invention relates generally to furniture and bedding
products and, more particularly, to supporting legs of the folding
type for use with such products.
BACKGROUND OF THE INVENTION
[0002] Conventional bedding products often have a rectangular frame
comprising two opposed side rails with a plurality of cross support
members, or slats, extending across the side rails for supporting a
box spring or foundation. Bed frames, for example, may further
include several other components such as support leg assemblies
which are usually secured to the side rails or cross members to
support the bed frame about the floor. Such bed frames are
typically manufactured and shipped to various retail outlets for
offering to end consumers.
[0003] Accordingly, manufacturers attempt to package the bed frames
in an efficient and cost-effective manner. This often requires that
various components of the bed frames be packaged in an unassembled
state such that subsequent assembly is required before the consumer
may use the bed frame. By way of example, the support legs may not
come assembled to the bed frame. As a result, the practice of
shipping such components separately, in an unassembled state,
involves considerable amounts of time and cost for both the
manufacturer and end-user.
[0004] Conventional assembly of a bed frame, for example, often
requires hardware and tools, such as wrenches, screw drivers, etc.
Accordingly, proper assembly relies on the retailer or consumer
having the proper tools readily accessible. It can be frustrating
when the person starts assembling the bed frame but then learns
that they lack the proper tools required to complete the assembly.
Moreover, proper assembly of the bed frame may be dependent on the
skill set of the person performing the assembly. Thus, even with
the correct tools, proper assembly of the bed frame may not be
achieved. The improper assembly of the bed frame may frustrate the
customer and result in negative product perception, phone calls or
other communications from unsatisfied consumers, or product return
and a demand for a refund.
[0005] In view of the above, there is an increasing need for
manufacturers to provide bedding or furniture products that are
easy to assemble and require a minimum number of tools.
[0006] It is therefore an objective of this invention to provide a
bedding or furniture product which may be shipped in a partially
assembled state with the leg assemblies pre-attached to the bedding
or furniture frame and configured to be assembled in a tool-less
manner.
[0007] It is further an objective of this invention to provide a
bedding or furniture product having legs, where each leg is
foldable between a folded position for shipping and storage and a
locked position for use.
SUMMARY OF THE INVENTION
[0008] According to one aspect of the invention, a foldable leg
assembly for use in a bedding or furniture product, such as a bed
frame or table, may be movable between a folded position and a
locked position. The leg assembly comprises a threaded connector
configured to be secured to a member of a frame which may be part
of the bedding or furniture product. The leg assembly further
includes a linkage member pivotally coupled to the threaded
connector to form a pivot joint therebetween, the pivot joint
having a pivot axis. The threaded connector may be secured to the
member of the frame with at least one fastener or in any known
manner.
[0009] The leg assembly further comprises a leg member coaxially
coupled to the linkage member to define a linkage assembly. The leg
member is rotatable and slideable relative to the linkage member.
The leg member has a threaded inner surface adjacent to an upper
end and configured to threadably couple to the threaded connector.
The foldable leg assembly is movable between a locked position and
a folded position. The threaded connector of the leg assembly is
stationary relative to the member of the frame regardless of the
position of the leg assembly. The leg member of each foldable leg
assembly includes a cavity configured to telescopically receive the
linkage member, pivot joint, and a portion of the threaded
connector therein.
[0010] When the leg assembly is in the locked position, the leg
member is threadably coupled to the threaded connector such that
the upper end of the leg member abuts the frame. When so
positioned, the linkage member, pivot joint, and a portion of the
threaded connector are disposed within a cavity of the leg member.
When the leg assembly is in the folded position, a portion of the
linkage member is disposed within a cavity of the leg member and
the linkage assembly is pivoted about the pivot axis of the pivot
joint to a position substantially parallel to the member of the
frame.
[0011] The threaded connector includes a boss extending from the
threaded connector in an axial direction and the linkage member
includes a split connector configured to receive the boss and be
pivotally coupled thereto. The linkage member and threaded
connector are pivotally coupled together with a pivot pin. The
linkage assembly pivots at least 90 degrees about the pivot axis of
the pivot joint.
[0012] In another aspect of the invention, the foldable leg
assembly for use in a bedding or furniture product comprises a
threaded connector having a cylindrical body provided with threads.
The threaded connector further includes an upper end extending in
an axial direction away from the cylindrical body and a boss
extending in an opposite axial direction and diametrically opposed
from the upper end. The threaded connector is adapted to be secured
to a member of a frame which may be part of the bedding or
furniture product.
[0013] The leg assembly further comprises a linkage member having a
cylindrical base with a body extending in an axial direction
therefrom to a split connector. The split connector includes two
arms defining a notch configured to receive the boss of the
threaded connector such that the boss and split connector may be
pivotally coupled together via a pivot pin to form a pivot joint
therebetween, the pivot joint having a pivot axis. The linkage
member further includes an annular flange configured to abut a
shoulder of the leg member as described below.
[0014] The foldable leg assembly further comprises a leg member
coaxially coupled to the linkage member to define a linkage
assembly. The leg member is rotatable and slideable relative to the
linkage member and includes a threaded inner surface adjacent to an
upper end and configured to threadably couple to the threaded
connector such that the foldable leg assembly is movable between a
locked position and a folded position. The leg member further
includes a lower end having an inner surface adjacent to the lower
end. The threaded inner surface adjacent to the upper end and inner
surface adjacent to the lower end are separated by a shoulder. The
shoulder of the leg member is configured to abut the annular flange
of the linkage member to limit movement of the leg member relative
to the linkage member.
[0015] According to another aspect of the invention, a method of
assembling a furniture or bedding product, such as a table or bed
frame, comprises providing a foldable leg assembly having a
threaded connector secured to a member of a frame, which may be
part of the bedding or furniture product. The method further
includes providing a linkage member pivotally coupled to the
threaded connector to form a pivot joint therebetween, the pivot
joint having a pivot axis. The method further includes providing a
leg member rotatably and slideably coupled to the linkage member in
a coaxial arrangement to define a linkage assembly. The leg member
has a threaded inner surface adjacent to an upper end and is
configured to threadably couple to the threaded connector.
[0016] The method comprises pivoting the linkage assembly from a
folded position wherein the linkage member is substantially
parallel to the member of the frame about the pivot axis of the
pivot joint to align an axis of the linkage assembly with an axis
of the threaded connector. The step of pivoting the linkage
assembly about the pivot axis of the pivot joint includes pivoting
the linkage assembly at least 90 degrees about the pivot axis of
the pivot joint.
[0017] The next step comprises sliding the leg member upwardly
towards the threaded connector secured to the member of the frame
to overlap a portion of the linkage member and a portion of the
threaded connector. The leg member is then rotated about the
threaded connector until the upper end of the leg assembly abuts
the member of the frame, thereby threadably coupling the leg member
to the threaded connector and the member of the frame. The step of
sliding the leg member upwardly towards the threaded connector
secured to the member of the frame includes telescopically
receiving the linkage member, a portion of the threaded connector,
and pivot joint within a cavity of the leg member.
[0018] The accompanying drawings, which are incorporated in and
constitute part of this specification, illustrate embodiments of
the invention and, together with the summary of the invention given
above, and the detailed description of the drawings given below,
explain the principles of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] FIG. 1 is a perspective view of a bedding product having
foldable leg assemblies, in the form of a bedding foundation fully
assembled.
[0020] FIG. 2 a perspective view of the bedding foundation of FIG.
1 without the upholstery.
[0021] FIG. 3 is a bottom perspective view of the bedding
foundation of FIG. 1, showing a frame supported by four foldable
leg assemblies shown in a locked position.
[0022] FIG. 4 is a bottom perspective view of the bedding
foundation of FIG. 1, showing each of the four foldable leg
assemblies in a folded position.
[0023] FIG. 5 is an exploded view of the encircled area 5 of FIG.
3.
[0024] FIG. 6A is a cross-sectional side view showing a foldable
leg assembly in a folded position.
[0025] FIG. 6B is a cross-sectional side view showing the foldable
leg assembly of FIG. 6A being pivoted to an extended position and
the leg member being raised relative to the linkage member.
[0026] FIG. 6C is a cross-sectional side view showing the foldable
leg assembly of FIGS. 6A-6B being further assembled, the leg member
being twisted to tighten the leg assembly.
[0027] FIG. 6D is a cross-sectional side view showing the foldable
leg assembly of FIGS. 6A-6C in a locked position.
[0028] FIG. 7 is a perspective view of a furniture product having
foldable leg assemblies according to an alternative embodiment of
the invention;
[0029] FIG. 8 is a bottom perspective view of the furniture product
of FIG. 7, showing the foldable leg assemblies in a locked
position.
[0030] FIG. 9 is a bottom perspective view of the furniture product
of FIG. 7, showing the foldable leg assemblies in a folded
position.
[0031] FIG. 10 is an exploded view of one of the foldable leg
assemblies of the product shown in FIGS. 7-9.
DETAILED DESCRIPTION OF THE INVENTION
[0032] Aspects of the present invention are directed to a foldable
leg assembly for use with bedding or furniture products.
Additional, aspects of the invention are directed to a tool-less
assembly and disassembly of the foldable leg assembly. FIGS. 1-6D
illustrate a bedding product having four foldable leg assemblies in
accordance with an embodiment of the invention. FIGS. 7-10
illustrate a furniture product in the form of a table having four
foldable leg assemblies in accordance with another embodiment of
the invention. However, while aspects of the present invention will
be described herein in the context of specific bedding and
furniture products, it should be appreciated that other products
requiring leg assemblies such as chairs, couches, or the like, may
also benefit from aspects of the invention. The drawings are not
intended to be limiting.
[0033] Referring now to FIGS. 1-4, there is illustrated a bedding
product 10, including a foundation 12 incorporating the principles
of the present invention according to one embodiment. The
foundation 12 is configured to support a mattress 14. As shown in
FIG. 2, the foundation 12 comprises a generally rectangular frame
16 supported by four foldable leg assemblies 18. Although one type
of generally rectangular frame 16 is illustrated as having four
foldable leg assemblies 18, any other type of frame 16 may be
supported by any number of foldable leg assemblies 18 constructed
according to aspects of the invention. The generally rectangular
frame 16 is typically made of metal but may be made of any known
material. In this regard, the foldable leg assembly 18 may be used
in any type of bedding or furniture product and is not intended to
be limited by the drawings.
[0034] With continued reference to FIG. 2, the generally
rectangular frame 16 comprises a head member 20, a foot member 22,
two side members 24, and four spacers 26. Each side member 24
extends generally longitudinally from head to foot between the
transversely extending head and foot members 20, 22, respectively.
As shown, each side member 24 is supported above the head and foot
members 20, 22 by two spacers 26. On each side of the generally
rectangular frame 16, a first spacer 26 extends between one of the
side members 24 and the head member 20, and a second spacer 26
extends between the same side member 24 and the foot member 22. The
spacers 26 are configured to couple the side members 24 to the head
and foot members 20, 22, as well as space the side members 24 a
predetermined distance above the head and foot members 20, 22. It
is within the scope of the invention that the spacers 26 be omitted
and the side members 24 be directly secured to the head and foot
members 20, 22.
[0035] As shown in FIGS. 5-6D, the head member 20 of the frame 16
is rectangular in cross-section and comprises a bottom wall 21, a
top wall 23 and two side walls 25 which define a hollow interior
27. Although not shown, the foot member 22 of the frame 16 has the
same size and configuration. However, it is within the scope of the
present invention that the head and foot members 20, 22 of frame 16
may have other configurations and need not be identical.
[0036] As shown in FIGS. 2-4, the frame 16 further includes four
foldable leg assemblies 18. In the embodiment illustrated, two
foldable leg assemblies 18 are secured to the head member 20 and
two additional foldable leg assemblies 18 are secured to the foot
member 22. Each foldable leg assembly 18 is illustrated being
secured to the respective head or foot member 20, 22, at a proximal
end thereof. However, the quantity and location of the foldable leg
assemblies 18 on the frame 16 is not intended to be limited by the
drawings. For example, the frame 16 may include more or less than
four foldable leg assemblies 18. Furthermore, each foldable leg
assembly 18 may be secured to the frame 16 at any location suitable
to support the bedding product 10. For example, the foldable leg
assemblies 18 may be secured to the side members 24. Although in
the embodiment illustrated, the foldable leg assemblies 18 are
secured with fasteners to the head and foot members 20, 22 of frame
16 as shown in FIGS. 6A-6D, the foldable leg assemblies 18 may be
secured to the frame 16 at any other suitable location on the frame
16 via any suitable method such as welding, or by fasteners, such
as screws, bolts, or other like fasteners.
[0037] With reference to FIGS. 3-4, the foundation 12 may further
comprise a platform 29 supported by the frame 16. The platform 29
comprises a plurality of spaced wooden or plastic slats 28 which
may be joined together with hinges 31. Some of the slats 28 of the
platform 29 may have openings 33 adapted to receive motors (not
shown) for an adjustable bed base. The platform 29 may be
configured to engage the side members 24 of the frame 16 such that
the foundation 12 is supported by the frame 16. The foldable leg
assemblies 18 of the frame 16 may space the platform 29 above a
floor for use as shown in FIG. 3. The platform 29 and frame 16 may
be part of an adjustable bed base.
[0038] The slats 28 of platform 29, or the side members 24 of frame
16, or both, may include one or more connecting members (not shown)
configured to receive, for example, screws or other like fasteners,
for securing the slats 28 to the frame 16. With specific reference
to FIG. 3, a perspective view of the foundation 12 and the frame 16
is shown wherein the foldable leg assembles 18 are in a locked
position. As shown, when in the locked position, the foldable leg
assemblies 18 are generally perpendicular to the frame 16 and
foundation 12 and extend a predetermined distance therefrom. When
each foldable leg assembly 18 is assembled in the locked position,
as shown in FIG. 3, the frame 16 is fully assembled to support the
foundation 12 and mattress 14. As discussed in further detail below
each of the foldable leg assemblies 18 are movable between the
locked position and a folded position.
[0039] Turning now to FIG. 4, a perspective view of the foundation
12 and the frame 16 is shown wherein the foldable leg assembles 18
are in the folded position. In the embodiment shown, the foldable
leg assemblies 18 are pivoted to the folded position and closely
adjacent to the underside of the frame 16. More specifically, when
each foldable leg assembly 18 is in the folded position, most of
the foldable leg assembly 18 is folded inwardly and positioned
adjacent and substantially parallel to one of the respective head
or foot members 20, 22 of frame 16. However, the foldable leg
assembly 18 may fold in any other suitable direction and is not
intended to be limited by the drawings.
[0040] As shown in FIG. 4, when each foldable leg assembly 18 of
the frame 16 is in the folded position, the frame 16 is provided
with a more compact configuration to facilitate shipping or storing
of the bedding product 10 when not in use. In this regard, the
frame 16 may be shipped to a consumer in a partially assembled
state, with the foldable leg assemblies 18 in the folded position.
Compared to the standard practice of packaging and shipping leg
assemblies separately, the foldable configuration of the present
invention may reduce overall dunnage and shipping costs incurred by
parts manufacturers who typically ship such components separately.
To this end, the frame 16 may be received by an end user or
consumer having the foldable leg assemblies 18 folded, such that
the consumer may unfold and lock the leg assemblies 18 without the
use of tools, as described in additional detail below.
[0041] As best shown in FIG. 5, each foldable leg assembly 18
includes a threaded connector 30, a linkage member 32 pivotally
coupled to the threaded connector 30 via a pivot pin 34 to form a
pivot joint 36, and a leg member 38 slideably coupled to the
linkage member 32 in a coaxial arrangement to define a linkage
assembly 39, as will be described in greater detail below. As
shown, the pivot pin has longitudinal axis "A1," the threaded
connector 30 has longitudinal axis "A2," and the linkage assembly
39 has longitudinal axis "A3." Although FIG. 5 illustrates one
foldable leg assembly 18 secured to the head member 20 of frame 16,
the foldable leg assembly 18 may be secured to any other member of
the frame 16 at any suitable location. Accordingly, the structural
features of the leg assembly 18 will each be described in
additional detail below.
[0042] As best shown in FIG. 5, the head member 20 of frame 16 is
provided with a bore 40 through the bottom wall 21 proximal to one
end thereof and configured to receive an upper end 42 of the
threaded connector 30. In the embodiment shown, the bore 40 defines
a polygonal inner surface 44 that corresponds generally to the
polygonal shape of the upper end 42 of the threaded connector 30,
wherein the bore 40 and the upper end 42 are generally cylindrical
in shape. In this regard, the bore 40 is configured to tightly
receive the upper end 42 of the threaded connector 30 such that the
polygonal inner surface 44 of the bore 40 engages the polygonal
upper end 42 of the threaded connector 30, preventing rotation
therebetween.
[0043] Alternatively, the bore 40 and the upper end 42 of the
threaded connector 30 may have different configurations, for
example, both may be cylindrical, oval, or any other suitable
shape. The threaded connector 30 may be fixed to the head member 20
of frame 16 via any suitable method such as welding, or by
fasteners, such as screws, bolts, or other like fasteners, as
described in further detail below. The threaded connector 30 does
not move regardless of the position of the leg assembly 18 and
regardless of how the threaded connector 30 is fixed to the frame
16.
[0044] As best shown in FIGS. 6A-6D, the threaded connector 30
preferably is a unitary member but may be made of multiple members.
The upper end 42 of the threaded connector 30 has a threaded recess
46 configured to receive a fastener 48 for coupling the threaded
connector 30 to the head member 20 of the frame 16. As shown in
FIGS. 6A-6D, when the upper end 42 of the threaded connector 30 is
positioned within the bore 40 in the head member 20 of frame 16,
the fastener 48 may be disposed through a diametrically opposed
bore 50 extending through the top wall 23 in the head member 20 of
frame 16, wherein the fastener 48 is configured to threadably
engage the recess 46 in the upper end 42 of the threaded connector
30. In this regard, the threaded engagement between the fastener 48
and the recess 46 fixedly couples the threaded connector 30 to the
head member 20 of the frame 16. Furthermore, the threaded connector
30 is stationary relative to the member 20, 22, of the frame 16
regardless of the position of the other components of the leg
assembly 18. However, it will be appreciated that other suitable
means may be used to couple the threaded connector 30 to either the
head or foot member of the frame 16 so the threaded connector 30 is
stationary regardless of the position of the leg assembly 18.
[0045] As shown in FIG. 5, the threaded connector 30 further
includes a generally cylindrical body 52 provided with external
threads 51, the generally cylindrical body 52 being below the upper
end 42 of the threaded connector 30. The upper end 42 projects
axially from the body 52, along axis "A2," and a boss 54 projects
from the body 52 along axis "A2" and in an opposite direction from
the upper end 42. As shown in FIG. 5, the diameter of the upper end
42 of the threaded connector 30 is smaller than the diameter of the
threaded body 52 of the threaded connector 30. In this regard, the
upper end 42 of the threaded connector 30 is positioned radially
inwardly relative to the threaded body 52 of the threaded connector
30 to define an annular shoulder 56 therebetween. As best shown in
FIGS. 6A-6D, the annular shoulder 56 is configured to abut the
bottom wall 21 of the head or foot member 20, 22 of the frame 16
when the threaded connector 30 is attached thereto, positioning the
threaded body 52 substantially adjacent to the head or foot member
20, 22 of the frame 16. When so positioned, the threaded body 52
and boss 54 of the threaded connector 30 remain exposed below the
respective head or foot member 20, 22, of the frame 16, such that
the linkage member 32 may be operatively coupled to the boss 54 to
facilitate pivotal movement of the foldable leg assembly 18 between
the folded and locked positions, as discussed in further detail
below.
[0046] As best shown in FIG. 5, the boss 54 of the threaded
connector 30 projects axially along longitudinal axis "A2" from the
threaded body 52 of the threaded connector 30 and has a width that
generally corresponds to the width of the threaded body 52. In this
regard, the boss 54 has two rounded surfaces 58 that are smooth,
continuous extensions of the threaded body 52, extending axially
along longitudinal axis "A2" to a hemispheric end 60 of the boss
54. The boss 54 further includes opposed flatted sides 62, adjacent
to the rounded sides 58 and positioned radially inwardly relative
to the threaded body 52 to define two semicircular-shaped shoulders
64. As shown, the flatted sides 62 of the boss 54 extend axially
along longitudinal axis "A2" from the threaded body 52 and through
the hemispheric end 60 so as to truncate the hemispherical shape of
the end 60 of the boss 54. The flatted sides 62 of the boss 54
further include a horizontal through-bore 66 disposed adjacent to
the hemispheric end 60 and configured to tightly receive the pivot
pin 34 therethrough. As shown in FIG. 5, the pivot pin 34 has a
longitudinal axis "A1" which is the pivot axis of the leg assembly
18.
[0047] With continued reference to FIG. 5, the linkage member 32
comprises a unitary member having a generally cylindrical base 68
and a cylindrical body 70 extending from the generally cylindrical
base 68 to a hemispherically shaped split connector 75. The
hemispherically shaped split connector 75 is configured to
pivotally receive the boss 54 of the threaded body 52 of the
threaded connector 30. As shown in FIG. 5, the cylindrical body 70
of the linkage member 32 is spaced radially inwardly relative to an
outer surface 72 of the base 68 to define an annular flange 74. As
discussed in additional detail below, the annular flange 74
facilitates the coaxial coupling of the leg member 38 to the
linkage member 32, such that the leg assembly may slideably receive
the linkage member therein. The split connector 75 includes a pair
of spaced apart and substantially parallel arms 76 provided with
axially aligned through-bores 78 for closely receiving portions of
the pivot pin 34 therethrough.
[0048] As shown in FIG. 5, each arm 76 of split connector 75 of the
linkage member 32 further includes a flatted inner surface 80
extending from a bearing surface 82 to define a generally
rectangular notch 84 configured to closely receive the boss 54 of
the threaded connector 30 therein. In this regard, when the boss 54
of the threaded connector 30 is fully received within the notch 84
of the linkage member 32, the bore 66 in the boss 54 and the bores
78 in the arms 76 of the split connector 75 are configured to
substantially align so that the pivot pin 34 may be disposed
therethrough, pivotally coupling the linkage member 32 to the
threaded connector 30 to form pivot joint 36 having pivot axis
"A1." In this regard, the length of the pivot pin 34 is sized such
that when the pivot pin 34 is disposed through the bores 66, 78,
the ends of the pivot pin 34 are substantially co-planar with the
body 70 of the linkage member 32 so as not to inhibit movement of
the leg member 38, as described in further detail below. In one
embodiment, the engagement between the linkage member 32, threaded
connector 30, and pivot pin 34, forming the pivot joint 36, may be
a frictional engagement such that the leg assembly 18 is not
capable of freely pivoting on its own. In this regard, the amount
of force required to maneuver or pivot the leg assembly 18 is
configured to be within the capacity of an adult person using his
or her hands.
[0049] As best shown in FIGS. 5-6D, when the linkage member 32 and
threaded connector 30 are pivotally coupled via pivot pin 34, the
hemispheric end 60 of the boss 54 is adjacent to the bearing
surface 82 of the notch 84 and, similarly, the arms 76 of the
linkage member 32 are adjacent to the semicircular-shaped shoulders
64 of the threaded connector 30. In this regard, the rounded shape
of both the hemispheric end 60 of the boss 54 and the ends of the
arms 76 of the split connector 75 facilitate clearance for pivotal
movement of the linkage member 32 and, more specifically, pivotal
movement of the linkage assembly 39 about pivot axis "A1." By way
of example and without limitation, in one embodiment, the linkage
assembly 39 may pivot about the pivot axis "A1" between about 70
and 270 degrees. In a preferred embodiment, the linkage assembly 39
may pivot between about 170 and 190 degrees about the pivot axis
"A1" and, even more preferably, about 180 degrees.
[0050] With continued reference to FIGS. 5-6D, the leg member 38
includes a generally cylindrical wall 86 extending between upper
and lower ends 88, 90, and including a first inner surface 92
adjacent to the lower end 90, and a second, inner surface 94
provided with threads 95 and adjacent to the upper end 88. The
first and second inner surfaces 92, 94, are separated by a shoulder
96 as best seen in FIG. 6B. As shown in FIGS. 6C and 6D, the first
and second inner surfaces 92, 94, of leg member 38 define a
generally cylindrical cavity 98 configured to telescopically
receive at least a portion of the threaded connector 30, a portion
of the linkage member 32, and the pivot joint 36 therein. As seen
in FIG. 5, each leg member 38 may also include an end cap 100
surrounding a portion of the lower end 90 of the leg member 38 and
configured to be secured thereto. As shown, the leg member 38 has a
generally circular cross-sectional shape and the leg member 38 is
of suitable length to receive the components of the foldable leg
assembly 18 therein, as discussed in further detail below. However,
the leg member 38 shown and described herein may be varied in size
and shape, as known in the art, without departing from the scope of
the present invention.
[0051] As best shown in FIGS. 6A-6D, the leg member 38 is coaxially
coupled to the linkage member 32 to define the linkage assembly 39.
In this regard, when coaxially coupled to the linkage member 32,
the leg member 38 is configured to be rotatable about the linkage
member 32, and slideable relative to the linkage member 32 such
that the linkage member 32 may slide within the cavity 98 of the
leg member 38 so as to be partially or wholly disposed within the
cavity 98 of the leg member 38. In this regard, the leg member 38
can be slid in an upward or downward direction along axis "A3"
relative to the linkage member 32. As discussed in further detail
below, the downward movement of the leg member 38 is restricted by
the engagement between the shoulder 96 of the leg member 38 and the
annular flange 74 of the linkage member 32.
[0052] As shown in FIG. 6A, when the linkage member 32 is in the
folded position, the upper end 88 of the leg member 38 is
positioned farthest away, along axis "A3," from the pivot joint 36
such that a portion of the linkage member 32 is partially extended
from the leg member 38. In this regard, the shoulder 96 of the leg
member 38 confronts or abuts the annular flange 74 of the linkage
member 32. The leg member 38 remains in this position between the
collapsed position shown in FIG. 6A, and the extended position
shown in FIG. 6B. In this regard, the linkage member 32 is
constrained from moving axially along longitudinal axis "A3" within
the cavity 98 of the leg member 38 beyond a specified limit by the
eventual interference of the annular flange 74 of the linkage
member 32 impinging against the shoulder 96 of the leg member 38.
Thereby coaxially coupling the leg member 38 and the linkage member
32 such that the leg member 38 is movable relative to the linkage
member 32, yet the leg member 38 and linkage member 32 are
non-separable.
[0053] With continued reference to FIGS. 6A-6D, the diameter of the
base 68 of the linkage member 32 is slightly smaller in size
compared to the diameter of the first inner surface 92 of the leg
member 38, which is configured to closely receive the base 68 of
the linkage member 32. As shown in FIGS. 6A-6D, the outer surface
72 of the base 68 of the linkage member 32 may slideably engage the
first inner surface 92 of the leg member 38. Similarly, the
diameters of the body 70 of the linkage member 32 and the boss 54
of the threaded connector 30 are slightly smaller in size compared
to the second, threaded inner surface 94 of the leg member 38,
which is configured to slide in an axial direction along
longitudinal axis "A3" over these elements 30, 32. To this end, the
leg member 38 may slide axially along longitudinal axis "A3" such
that the linkage member 32, pivot joint 36, and a portion of the
threaded connector 30 are telescopically received within the cavity
98 of the leg member 38. As shown, the second inner surface 94 of
the leg member 38 is configured to threadably receive the body 52
of the threaded connector 30, thereby coupling the leg member 38 to
the threaded connector 30 and the frame 16, as described in further
detail below.
[0054] With continued reference to FIGS. 6A-6D, operation of the
leg assembly 18 between the folded position and the locked position
will now be described in greater detail for the present embodiment.
In this regard, FIG. 6A shows the head member 20 of frame 16 having
a foldable leg assembly 18 fixed thereto and in the folded
position, illustrating a typical arrangement for shipping a frame
16 to an end user, for example. As shown in FIG. 6A, the linkage
assembly 39 is substantially parallel to the head member 20 and
longitudinal axis "A3" of the linkage assembly 39 is substantially
perpendicular to longitudinal axis "A2" of the stationary threaded
connector 30. When the leg assembly 18 is in the folded position, a
portion of the linkage member 32, a portion of the threaded
connector 30, and the pivot joint 36 are exposed outside the cavity
98 of the leg member 38. When so positioned, the shoulder 96 of the
leg member 38 is adjacent to or abuts the annular flange 74 of the
linkage member 32, as set forth above. In this regard, when the
pivot joint 36 is exposed outside the leg member 38, as shown in
FIG. 6A, the linkage assembly 39 may be pivoted about pivot axis
"A1," and the leg assembly 18 may be moved to the folded position.
To move the foldable leg assembly 18 from the folded position to
the extended position shown in FIG. 6B, the linkage assembly 39 is
pivoted about 90 degrees relative to the pivot axis "A1," to the
extended position wherein the longitudinal axis "A3" of the linkage
assembly 39 is substantially aligned with the longitudinal axis
"A2" of the threaded connector 30 and substantially perpendicular
to the head member 20 of the frame 16, as best shown in FIG. 6B.
However, the linkage assembly 39 may be configured to pivot more or
less degrees about the pivot axis "A1."
[0055] With continued reference to FIG. 6B, when linkage assembly
39 is in the extended position, the leg member 38 is positioned
such that the shoulder 96 of the leg member 38 abuts the annular
flange 74 of the linkage member 32 so as to position the upper end
88 of the leg member 38 farthest away from the head member 20 of
the frame 16. From the extended position, the leg member 38 may be
slid in an upward direction, as indicated by arrows 99 in FIG. 6B,
towards the head member 20 of the frame 16. In this regard, as the
leg member 38 is slid upwardly, the leg member 38 traverses the
body 70 of the linkage member 32, pivot joint 36, and the boss 54
of the threaded connector 30, thereby telescopically receiving
these elements 30, 32, 36 within the cavity 98 of the leg member
38. The leg member 38 is slid upwardly until the upper end 88 of
the leg member 38 nears the body 52 of the threaded connector 30,
as shown in FIG. 6C.
[0056] As shown in FIG. 6C, when the upper end 88 of the leg member
38 nears the body 52 of the threaded connector 30, the body 52 is
partially received within cavity 98 of the leg member 38, whereby
rotation of the leg member 38, as indicated by arrow 101, causes
the threads 95 on the second inner surface 94 of the leg member 38
to engage the external threads 51 of the body 52 of the threaded
connector 30. Through continued rotation, the leg member 38 further
traverses the body 52 of the threaded connector 30, moving upward,
further receiving the threaded connector 30 within the cavity 98 of
the leg member 38, until the upper end 88 of the leg member 38
abuts the bottom wall 21 of the head member 20 of the frame 16, as
shown in FIG. 6D. Although in the embodiment illustrated the leg
member 38 is rotated in a clockwise direction to threadably join
the leg member 38 to the threaded connector 30, the leg member 38
may alternatively be configured to rotate in a counterclockwise
direction to threadably engage and be threadably joined to the
threaded connector 30.
[0057] As shown in FIG. 6D, when the upper end 88 of the leg member
38 abuts the bottom wall 21 of the head member 20 of the frame 16,
the leg member 38 is threadably joined to the threaded connector 30
and head member 20 of the frame 16, forming a rigid connection
therebetween. In this regard, the foldable leg assembly 18 is in
the locked, assembled position, to provide maximum stability and
support for the bedding product 10. As shown, when the leg member
38 is in the locked position, the linkage member 32, pivot joint
36, and a portion of the threaded connector 30 are disposed within
the cavity 98 of the leg member 38. Furthermore, both the threaded
engagement between the leg member 38 and the threaded connector 30,
as well as the confronting relationship between the leg member 38
and the head member 20 of the frame 16, prevents the leg assembly
18 from moving relative to the frame 16 when in the locked
position.
[0058] To decouple the leg member 38 and position the foldable leg
assembly 18 in the folded position from the locked position, the
leg member 38 is rotated in the opposite direction until the
threaded connection is broken. At this time, the leg member 38 can
be slid downward and away from the frame 16 until the shoulder 96
of the leg member 38 abuts the annular flange 74 of the linkage
member 32. When so positioned, a portion of the threaded connector
30, a portion of the linkage member 32, and the pivot joint 36 are
exposed from the cavity 98 of the leg member 38 thereby allowing
the linkage assembly 39 to pivot to the folded position. To prevent
the linkage assembly 39 from over-pivoting and contacting the frame
16, in one embodiment, the arms 76 of the linkage member 32 may be
configured to abut the semicircular-shaped shoulders 64 of the
threaded connector 30.
[0059] Referring now to FIGS. 7-10, in which like reference
numerals refer to like features in FIGS. 1-6D, a furniture product
in the form of a table 102 in accordance with an alternative
embodiment is shown. In the embodiment shown, each foldable leg
assembly 18a may be similar to the foldable leg assembly 18 of
FIGS. 1-6D in many respects, but differ in the configuration of the
leg member. As shown, the table 102 includes a table top 104 and a
supporting frame 106 extending around the periphery of the table
top 104, the frame 106 further comprising four foldable leg
assemblies 18a secured thereto and configured to support the table
102. The foldable leg assembly 18a being movable between a locked
position, shown in FIG. 8, and a folded position, shown in FIG. 9.
In this regard, and like the embodiment shown in FIGS. 1-6D, a
portion of the linkage member 32, a portion of the threaded
connector 30, and the pivot joint 36 may be slideably exposed
outside from the cavity 98 of the leg member 38a to pivot the leg
assembly 18a to the locked position. Likewise, a portion of the
linkage member 32, a portion of the threaded connector 30, and the
pivot joint 36 may be telescopically received within the cavity 98
of the leg member 38a, thereby allowing the leg member 38a to be
threadably coupled to the threaded connector 30 to position the leg
assembly 18a in the locked position. In this regard, operation of
the leg assembly 18a between the folded position and the locked
position for the present embodiment is conducted in the same way as
set forth above for the embodiment shown in FIGS. 1-6D.
[0060] As best shown in FIG. 10, each foldable leg assembly 18a
includes a threaded connector 30, a linkage member 32 pivotally
coupled to the threaded connector 30 via a pivot pin 34 to form a
pivot joint 36, and a leg member 38a slideably coupled to the
linkage member 32 in a coaxial arrangement to define a linkage
assembly 39a. Each leg assembly 18a may be secured to a corner
point around the periphery of frame 106 the table 102 as shown in
FIGS. 7-9. However, the foldable leg assemblies 18a may be secured
at any other suitable location on the frame 106 of the table 102.
As shown, each foldable leg assembly 18a includes a leg member 38a
that is substantially longer compared to the leg member shown in
other embodiments. In this regard, each leg member 38a has a
generally square cross-sectional shape, tapering down to a
truncated foot 108. Although the cross-sectional shape of the leg
member 38a may be square, or any other suitable geometry, for
example, the cavity 98 of the leg member 38a, defined by the first
and second inner surfaces 92, 94, remains generally cylindrical in
shape, as seen in FIG. 10. To this end, the operation of the leg
assembly 18a from the folded position, to the extended position,
and to the locked position is the same as discussed above for the
embodiment shown in FIGS. 6A-6D.
[0061] The elements that form the frames 16, 106, and more
specifically, the foldable leg assemblies 18, 18a, may be formed
from a variety of materials. For example, the leg member 38, 38a,
threaded connector 30, and linkage member 32 may be formed from
suitable engineering plastics or metal (e.g., steel, aluminum,
carbon steel, or any plated metal) and have other suitable
cross-sectional shapes. However, these materials are exemplary and
it should be recognized that other materials may be used, such as
wood, for example. In contrast, the end cap 100 may be molded from
suitable engineering plastics, including, for example,
polypropylene, polyethylene or other suitable plastics. However,
the invention is not so limited as to the elements that form the
foldable leg assembly 18, 18a, which may be formed from other
suitable materials.
[0062] One advantage of the present invention is that a customer
may receive the product 10, 102, in a box via the mail or a common
carrier and assemble the product 10, 102 quickly and easily without
the use of tools. The products 10, 102, are shipped to a consumer
with the components, such as the foldable leg assemblies 18, 18a,
already attached to the frame 16, 106, for example. To fully
assemble the product, a consumer must only pivot each foldable leg
assembly 18, 18a, from the folded position to the extended
position, slide the leg member 38, 38a towards the threaded
connector 30 and thread the leg member 38, 38a thereto for the
locked position, as described above.
[0063] The various embodiments of the invention shown and described
are merely for illustrative purposes only, as the drawings and the
description are not intended to restrict or limit in any way the
scope of the claims. Those skilled in the art will appreciate
various changes, modifications, and improvements which can be made
to the invention without departing from the spirit or scope
thereof. The invention in its broader aspects is therefore not
limited to the specific details and representative apparatus and
methods shown and described. Departures may therefore be made from
such details without departing from the spirit or scope of the
general inventive concept. The invention resides in each individual
feature described herein, alone, and in all combinations of those
features. Accordingly, the scope of the invention shall be limited
only by the following claims and their equivalents.
* * * * *