DE3901743A1 | 1989-07-27 | |||
US2872203A | 1959-02-03 | |||
US3330575A | 1967-07-11 | |||
US1576075A | 1926-03-09 | |||
US4741056A | 1988-05-03 | |||
EP0481452A1 | 1992-04-22 |
1. | A convertible stroller for convenient conversion between a plurality of configurations, comprising: a frame structure; a back rest portion connected to the frame structure at a first pivot point to allow the back rest portion to recline between an upright and a reclined position; a foot rest portion connected to the frame structure at a second pivot point to allow the foot rest portion to rotate between a lowered position and an elevated position; and an arm bar slidably connected to the frame structure to allow the arm bar to move between a closed position and an extended position. |
2. | The convertible stroller of claim 1, wherein the frame structure includes a pair of front leg support members and a pair of rear leg support members. |
3. | The convertible stroller of claim 2, wherein each front leg support member is connected to a corresponding one of the rear leg support members a collapsing pivot point to allow the frame structure to fold up. |
4. | The convertible stroller of claim 1, further comprising a collapsible canopy. |
5. | The convertible stroller of claim 1, further comprising a boot for covering the arm bar in the extended position. |
6. | The convertible stroller of claim 5, wherein the boot covers the arm bar when the back rest portion is in the reclined position and when the leg rest portion is in the elevated position. |
7. | The convertible stroller of claim 5, wherein the boot is comprised of an insulated fabric material. |
8. | The convertible stroller of claim 1, further comprising a button for engaging with the arm bar to lock the arm bar in position. |
9. | The convertible stroller of claim 1, wherein the arm bar comprises a generally Ushaped tube including a first and a second side portion and a center portion. |
10. | The convertible stroller of claim 9, wherein the arm bar further comprises a plurality of dimples on the first and second side portions. |
11. | The convertible stroller of claim 10 further comprising a button for engaging with the plurality of dimples on the arm bar to lock the arm bar in position. |
BACKGROUND OF THE INVENTION
Field Of The Invention
The present invention relates to a convertible stroller
and, in particular, to such a stroller that can be
conveniently and rapidly converted from a normal
configuration to a bassinet configuration.
Description Of The Related Art
Conventional strollers may include a variety of
features. For example, some conventional strollers may be
changed to several configurations, including various
reclining configurations, and various folded configurations.
However, conventional strollers suffer from the drawback of
not being able to conveniently and rapidly change from a
normal configuration, wherein the child is generally sitting
upright or reclined, to a bassinet configuration where the
child (or an infant) may lie down.
SUMMARY OF THE INVENTION
The present invention has been made in view of the
above circumstances, and has as an object of the present
invention a convertible stroller for convenient conversion
between a plurality of configurations comprising a frame
structure, a back rest portion connected to the frame
structure at a first pivot point to allow the back rest
portion to recline between an upright and a reclined
position, a foot rest portion connected to the frame
structure at a second pivot point to allow the foot rest
portion to rotate between a lowered position and an elevated
position, and an arm bar slidably connected to the frame
structure to allow the arm bar to move between a closed
position and an extended position.
Additional objects and advantages of the invention will
be set forth in part in the description which follows and in
part will be obvious from the description, or may be learned
by practice of the invention. The objects and advantages of
the invention may be realized and attained by means of the
instrumentalities and combinations particularly pointed out
in the appended claims .
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings, which are included to
provide a further understanding of the invention and are
incorporated in and constitute a part of this specification,
illustrate one embodiment of the invention and together with
the written description serve to explain the principles of
the invention. In the drawings:
Figure 1 is a perspective view of a stroller according
to the present invention in a normal configuration;
Figure 2 is a perspective view of a stroller according
to the present invention in a bassinet configuration;
Figure 3 is a side view of the structural skeleton of
the stroller in accordance with the present invention;
Figure 4 (a) is a bottom view and Figure 4 (b) is a side
view of the arm bar according to the present invention; and
Figure 5(a) is a side view, Figure 5(b) is a top view,
and Figure 5(c) is an end view of a button according to the
present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Reference will now be made in detail to the present
preferred embodiment of the invention, an example of which
is illustrated in the accompanying drawings.
Figure 1 shows a stroller 100 which generally includes
a handle 102, a collapsible canopy 104, an adjustable
backrest portion 106, a seat portion 107, an arm bar 108,
and an adjustable footrest portion 110. The backrest
portion 110 is shown in the upright position to facilitate a
child sitting up, and the footrest portion 110 is shown in a
lower position to allow the child's legs to extend downward.
The arm bar 108 is shown with a cushion portion 112
generally surrounding a portion of the arm bar 108.
Figure 2 generally shows the stroller 100 converted
into a bassinet configuration. In general, the bassinet
configuration of the stroller 100 provides a bassinet area
202 wherein the backrest portion 106 is in a fully reclined
position, and the arm bar 108 (only a portion of which is
shown in Fig. 2) is extended in an outward direction. The
leg rest 110 (not shown in Figure 2 ) has been rotated upward
to a substantially level position to form a lower portion of
the bassinet area 202. The bassinet configuration further
includes a boot 200 which is placed over the arm bar and to
provide a side wall surrounding the bassinet area 202. The
boot 200 is preferably made of an insulated cloth and
fastened to the stroller 100 by means of a snap or button
204. Also, the canopy 104 is shown in an uncovered position
in Figure 2.
The details of the conversion aspects of the present
invention will now be described with reference to Figures 3-
5. Figure 3 shows the structural skeleton 300 of the
stroller in accordance with the present invention. In
particular, the handle 102 is shown in a position similar to
that shown in Figures 1 and 2. The skeleton of the
collapsible canopy 104 is further shown in a fully uncovered
position, and the backrest portion 106 is shown in the fully
reclined position. The canopy pivots about a point
generally indicated at point 302, and the backrest pivots
about point 304. The leg rest portion 110 is shown in an
elevated position in Figure 3 to provide a portion of the
floor for the bassinet area 202.
Figure 3 also shows a front leg support member 308 and
a rear leg support member 309. The frame structure 300
preferably includes a pair of front leg support members and
a pair of rear leg support members 309. A collapsing pivot
point 310 is connected to an end of the front leg support
member 308 and an end of the rear leg support member 309.
Collapsing pivot point 310 allows the leg members 308 and
309 to collapse, thereby allowing the frame structure to
fold up.
Figure 3 further shows a side piece 312 connected to
the frame structure 300 and generally for providing a guide
structure for the arm bar 108. In particular, the side
piece 312 generally includes a circular orifice for
receiving the preferred arm bar 108 and further includes a
mechanism for locking the arm bar in position. Figure 3
shows the arm bar 108 in the closed position in solid line,
and in an extended position by dashed line. As part of the
locking mechanism, the side piece includes a button 314 for
use in locking the arm bar in its desired position. Of
course, it should be understood that the arm bar could be
removed from the structural skeleton to provide yet another
configuration.
The leg rest portion 110 is also shown in Figure 3
in a dashed line in the normal downward position shown in
Figure 1. A locking member 306 is shown connected to a
front leg support member 308 and an intermediate point in
the leg rest 110. The locking member 306 preferably
comprises a wire which slides in a groove with a notch to
lock the leg rest portion 110 in the desired positions. As
can be seen, a substantially flat bassinet bed area is
created by the full reclined backrest portion 106, the seat
portion 107, and the elevated leg rest portion 110.
To install the boot 200 shown in Figure 2, the user
simply extends the preferred cloth structure over the
extended arm bar 108 (shown in dashed lines in Figure 3) and
over the elevated leg rest portion 110 to a configuration as
shown in Figure 2. The boot is fastened to the frame
structure by a snap or button 204. Preferably, the boot is
a cloth material, and may be insulated to retain the warmth
of the child in the bassinet area. Additionally, the boot
200 may include a cover portion (not shown) , preferably of a
cloth material, which can cover the bassinet area 202.
Preferably, the cover portion may be attached to the boot
200 by a zipper structure (not shown) at the inner edge of
the boot surrounding the bassinet structure. Of course, the
zipper may be partially closed to only partially cover the
bassinet area as desired.
Figure 4 (a) shows a bottom view of a preferred arm bar
108 in accordance with the present invention. In
particular, the arm bar 108 generally comprises a U-shaped member, preferably a hollow steel tube, including two side
portions 400 and 402 and a center portion 404. The
cushioned portion 112 is not shown in Figure 4. Each side
portion includes a plurality of dimples 406. Figure 4(b)
shows a side view of the arm bar 108 and shows a bend in the
bar generally indicated at area 410 which causes the center
member to extend upwards slightly. Figure 4(b) also shows a
side view of the side member 400 and the dimples 406.
Figure 5 shows a side, top, and end view of the button
314 according to a preferred embodiment of the present
invention. As can be seen in Figure 5(a) , the button 314
includes an end 500 to be pushed by the user. A notch 502
and protruding portion 504 are also shown in Figure 5(a) .
As explained below, the notch 502 engages with the dimples
406 on the arm bar 108 to lock the arm bar in place.
Figure 5(b) shows a top view of the button 314 and
generally shows two side portions 506 each including tab
ends 508. Side portions 506 and tab ends 508 operate to
secure the button in the side piece 312 shown in Figure 3.
Preferably, the side piece 312 includes an oval orifice (not
shown) to receive the button 314 and an appropriate inner
lip (not shown) such that the side portions 506 are
compressed slightly upon insertion, and the tab ends 508
snap into position and secure the button in place against
the inner lip of the orifice (not shown) . Figure 5 (c) shows
an end view of the button 314.
During operation, the button is preferably biased
outward by a spring (not shown) such that the extending
portion 504 is engaged with a dimple 406 on the arm bar 108.
To adjust the position of the arm bar 108, the user
depresses the button 314 such that the notch 502 is adjacent
the dimples and thereby allows the circular arm bar 108 to
slide. As the arm bar 108 slides to the new position, the
spring (not shown) biases the button 314 to cause the
extending portion 504 to engage with the appropriate dimple
406, thereby locking the arm bar in place. With this
procedure, the arm bar 108 can be adjusted to the closed or
extended position.
The foregoing description of preferred embodiments of
the invention has been presented for purposes of
illustration and description. It is not intended to be
exhaustive or to limit the invention to the precise form disclosed, and modifications and variations are possible in
light of the above teachings or may be acquired from
practice of the invention. The embodiments were chosen and
described in order to explain the principles of the
invention and its practical application to enable one
skilled in the art to utilize the invention in various
embodiments and with various modifications as are suited to
the particular use contemplated. It is intended that the
scope of the invention be defined by the claims appended
hereto, and their equivalents.