Source: http://www.google.com/patents/US5590896?ie=ISO-8859-1
Timestamp: 2014-12-25 05:34:57
Document Index: 365988606

Matched Legal Cases: ['arts 120', 'arts 840', 'arts 856', 'arts 840', 'arts 840', 'arts 856', 'arts 856', 'arts 840', 'art 840', 'arts 840', 'arts 856', 'arts 840', 'arts 856', 'arts 856', 'arts 840', 'art 856']

Patent US5590896 - Stroller - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA three-wheeled collapsible stroller which can be used on terrain that is more bumpy or uneven than the smooth terrain suitable for a conventional small-wheeled stroller, but that is also more maneuverable than a conventional three-wheeled "jogging stroller." The stroller has a folding frame and automatic...http://www.google.com/patents/US5590896?utm_source=gb-gplus-sharePatent US5590896 - StrollerAdvanced Patent SearchPublication numberUS5590896 APublication typeGrantApplication numberUS 08/304,663Publication dateJan 7, 1997Filing dateSep 9, 1994Priority dateSep 9, 1994Fee statusPaidAlso published asUS5660435, US5669624Publication number08304663, 304663, US 5590896 A, US 5590896A, US-A-5590896, US5590896 A, US5590896AInventorsAnthony E. EichhornOriginal AssigneeFisher-Price, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (19), Non-Patent Citations (4), Referenced by (53), Classifications (17), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetStrollerUS 5590896 AAbstract A three-wheeled collapsible stroller which can be used on terrain that is more bumpy or uneven than the smooth terrain suitable for a conventional small-wheeled stroller, but that is also more maneuverable than a conventional three-wheeled "jogging stroller." The stroller has a folding frame and automatic side latches so that it is conveniently collapsible into a compact form for transportation and storage. The stroller also had a seat back that is quickly and conveniently adjustable between reclined and upright seating positions and that remains in the same reclined or upright position when folded and unfolded. The brakes of the rear wheels are automatically set when the stroller is fully folded.
What is claimed is: 1. A folding stroller having a frame with a substantially centered longitudinal axis, comprising:a front wheel positioned substantially on the longitudinal axis; a front member having a front wheel supporting portion for supporting said front wheel, and a pair of front member ends; a rear handle member having a handle portion and a pair of handle member ends, pivotally coupled to said front member ends; a pair of rear wheels both laterally offset from the longitudinal axis; a rear support member having a pair of rear wheel supporting portions, each said rear wheel supporting portion supporting a respective one of said rear wheels, and said rear support member having a pair of rear support member ends pivotally connected to said handle member; and a pair of side members each having a first side member end and a second side member end, wherein, said rear support member ends and said first side member ends are each pivotally connected to said front member between said front wheel supporting portion and one said front member and, respectively, and said second side member ends are each pivotally coupled to said rear member between one said rear wheel supporting portion and are said rear support member end, respectively. 2. A folding stroller according to claim 1, further comprising a latch mechanism having a pair of latches, said latches rotatably mounted to one of said pair of handle member ends and said front member ends for rotation about a latch rotation axis substantially perpendicular to an axis of the pivotal movement between said handle member ends and said front member ends,wherein, each said latch rotates between a first position at which said latch engages one of the other of said pair of handle member ends and said front member ends, to prevent pivoting between said front member and said handle member, and a second position at which each said latch does not engage said one of the other of said pair of handle member ends and said front member ends to permit pivoting between said front member and said handle member. 3. A stroller according to claim 1, wherein said front wheel supporting portion is mounted to said front member for pivoting about a substantially vertical axis.
4. A foldable stroller according to claim 3, wherein said front wheel supporting portion is selectively lockable to prevent pivoting.
5. A foldable stroller according to claim 1, further comprising a footrest/fender member mounted to said front member and disposed above of said front wheel.
6. A foldable stroller according to claim 1, further comprising a seat having a seat bottom portion and a seat back portion, wherein said seat back portion is transitionable between a first position and a second position inclined relative to said first position, and wherein then the stroller is folded with said seat back portion in the first position and subsequently unfolded, said seat back remains in the first position, and when the stroller is folded with said seat back in the second position, and subsequently unfolded, said seat back remains in the second position.
7. A foldable stroller having a folded configuration and an unfolded configuration, comprising:a first frame portion; a wheel rotatably mounted to said first frame portion; a brake lever pivotally mounted to said first frame portion, said brake lever including a wheel engaging portion being pivotable between a first position at which said wheel engaging does not contact said wheel and a second position at which said wheel engaging portion engages said wheel to brake said wheel; and a second frame portion connected to said first frame portion for relative movement with respect to said first frame portion said second frame portion contacting said brake lever to urge said brake lever into the second position when said stroller is in the folded configuration. Description
BACKGROUND OF THE INVENTION This invention relates to a stroller. More particularly, the invention relates to a three-wheeled child's stroller that has a selectively lockable, 360 degree pivoting front caster wheel and that folds conveniently and compactly for storage or portability. The stroller's design and wheel size are more suitable for rougher terrain and higher traveling speeds than a conventional stroller having small wheels. Further, the stroller is more compact and maneuverable than a conventional "jogging stroller" having three large bicycle-type wheels and tires. The invention also relates to a stroller having a convenient fold and automatic spring-loaded side latches for locking the stroller in the unfolded configuration. Additionally, the invention relates to a stroller having a reclining seat back and a child restraint seat belt.
Them are a variety of types of conventional three-wheeled collapsible strollers known. For example, U.S. Pat. No. 3,881,739 to Laune describes a child's stroller having three wheels of a relatively small size, as are usually associated with a conventional stroller. The front wheel is of a steerable, caster type and has a brake and is lockable in a forward-only orientation. The stroller frame comprises of a pair of horizontal side elements pivoted on each other at their front ends and having upright members at their rear ends. The front ends meet at a front pivot point with articulated connections, which allow the side elements and upright members to collapse upon each other to fold the stroller, reducing the space occupied by the stroller. Footrests are provided on the front tubes below the seat and above and behind the front wheel.
SUMMARY OF THE INVENTION The invention solves the problems and avoids the drawbacks of the prior art by providing a three-wheeled collapsible stroller which can be used on terrain that is more bumpy or uneven than the smooth terrain suitable for a conventional small-wheeled stroller, but that is also more maneuverable than a conventional three-wheeled "jogging stroller." The stroller has a folding frame and automatic side latches so that it is conveniently collapsible into a compact form for transportation and storage. The stroller also has a seat back that is quickly and conveniently adjustable between reclined and upright seating positions, and that is capable of remaining in the same position when unfolded and folded. The stroller also has a means for automatically setting the brakes of the rear wheels when the stroller is fully folded.
In one aspect, the invention relates to a folding stroller having a front wheel; a front member having a front wheel supporting portion for supporting the front wheel, and a pair of front member ends; a rear handle member having a handle portion and a pair of handle member ends; a pair of rear wheels; a rear support member having a pair of rear wheel supporting portions, each rear wheel supporting portion supporting a respective one of the rear wheels, and the rear support member having a pair of rear support ends; a pair of side members each having a first side member end and a second side member end. The handle member ends are pivotally connected to the front member ends, and the rear support member ends are pivotally connected to a medial portion of the handle member, the first side member ends are pivotally connected to portions of the front member and the second side member ends are pivotally connected to portions of the front member.
In still another aspect, the invention relates to a foldable stroller having a folded configuration and an unfolded configuration having a first frame portion; a wheel rotatably mounted to the first frame portion; and a brake lever pivotally mounted to the first frame portion, the brake lever including a wheel engaging portion being pivotable between a first position at which the wheel engaging does not contact the wheel and a second position at which the wheel engaging portion engages the wheel to brake the wheel. A second frame portion is connected to the first frame portion for relative movement with respect to the first frame portion and the second frame portion contacts the brake lever to urge the brake lever into the second position when the stroller is in the folded configuration.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a perspective view of the stroller.
DETAILED DESCRIPTION Reference will now be made in detail to presently preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.
1. Overall Stroller Configuration The overall stroller configuration will now be described. Several of the features described briefly under this heading are described in more detail below under separate headings.
The side fabric webs 815, 820 are attached to the handle tube 20 at attachment points located near the canopy pivot, and near parts 120 and 130. In the illustrated embodiment, the webs are attached to the tubes with hook and loop fasteners. In another preferred embodiment the webs may be more permanently attached to the handle tube by screws. The side webs 815, 820 and the front of the seat bottom 805 are also attached to the front tubes 40, 45 at a location just above the pivoting connection of the seat tubes 50, 60 and the lower portion of the front tubes 40, 45. Near the vertex of the seat bottom 805 with the seat back 801, the side webs 815,820 (and hence the seat bottom 805 and the seat back 801) are attached to the seat tubes in a sliding manner, e.g., by a strap 920, 925 passing outside and under the seat tubes 50, 60. This sliding connection permits the stroller frame to be folded, while the seat back remains in either the upright or reclining position, as described in more detail below with reference to the folding sequence.
Referring now particularly to FIG. 2, the handle tube 20 is pivotally connected at its lower ends to the front tubes 40, 45 by means of an upper right pivot mount 200 and an upper left pivot mount 190. The front tubes 40, 45 have their vertex at a nearly vertical head tube 41 which has a conventional headset assembly for mounting a fork shaft 780 of the fork 110 so that the fork 110 may pivot along the longitudinal axis of the head tube, which is offset slightly back from vertical. The front wheel 320 is mounted at the bottom of the fork 110. A footrest 80 may be provided mounted to the lower front part of the front tubes 40, 45 over the front wheel 320 as shown and may include a decorative cap 82. This footrest 80 also serves as a fender and a fairing over the front wheel 320.
Left and right seat tubes 50, 60 are mounted to the front tubes 40, 45 by right front seat tube pivot mount 180 and left front seat tube pivot mount 170 as shown. Both seat tubes 50, 60 are pivotally mounted at their other ends to the rear tube 30 by left and right rear seat tube pivot mounts 750 and 755, respectively. The rear tube 30 is generally U-shaped and is pivotally mounted at its top ends to the handle tube 20 by means of a upper right pivot mount 230 and a upper left pivot mount 220. Right and left axle brackets 280, 290 are mounted at the lower corners of the rear tube 30. The right and left axle brackets 280, 290 each have a hole for receiving an axle tube 70 that extends therebetween and the left and right wheels 260, 270 are each mountable detachably on stub axles 340, 350, respectively that fit in the left and right ends of the axle tube 70, respectively. The ends of the axle tube may be fitted with sleeves 420, 430.
Returning again to the frame, optional right and left upper covers 120, 130 are provided over the lower portions of the handle tube and cover the pivoting connection of the rear tube 30 and the handle tube 20. An inwardly spring-biased pivoting latch 140, 150 on each side rotates about the longitudinal axis of the front tubes 40, 45 and has an inner groove 141, 151 for engaging the handle tube 20 to hold the stroller in the fully unfolded position. Optional left and right lower covers 90, 100 cover the upper ends of the front tubes 40, 45 and also covers the pivoting connections of the front tubes 40, 45 to the handle tube 20. The construction and operation of the side latches 140, 150 and the folding sequence of the frame are both discussed in more detail below.
Each of the wheels 260, 270, 320 has a foam rubber tire 261, 271, 321 having an all-terrain type tread mounted on to a rim with a spoked intermediate hub 262, 272, 322 and two-piece plastic center hub 325, 360, 330, 370, 323 and 324. On the front wheel 320, a conventional roller bearing type axle 329 is provided and is mounted to the lower end of the fork 110. The rear wheels 260, 270 frictionally rotate on the stub axles 340, 350 that are inserted into sleeves 420, 430 on the ends of the axle tube 70, which is mounted to the rear tube 30 by the axle mounting brackets 280, 290. As noted above, each rear wheel 260, 270 has its own independently operable brake 300, 310.
2. Lockable Pivoting Front Caster Referring particularly to FIGS. 2 and 3A through 3C, the front fork assembly 110 includes a body portion having a left fork 110a, a right fork 110b, and a fork shaft 780. A shaft 780 extends into a conventional head set assembly 42 in the center head tube 41, to secure the front fork assembly 110 to the front tubes 40, 45 so that the front fork assembly 110 is free to rotate 360 degrees, in either direction, with respect to the frame of the stroller. The fork 110 also includes a swivel locking pin 525. In this embodiment, the locking pin 525 is a conventional bolt which extends through the fork crown 790 and extends outward from the fork crown 790.
A footrest retainer 580 includes a body portion 581 which has left and right arms 582, 583, which are generally "L" shaped and depend downward from body portion 581 along the inner sides and under the left and right sides of the front tubes 40, 45 respectively. Left and right guide rails 585, 586 depend downward from the left and right arms 582, 583, respectively, and are oriented so that the rail's longest sides are parallel with the forward and rearward directions of motion of the stroller. In this embodiment, left guide rail 585 includes a rib 587 that protrudes from the outside surface. The front portion 584 of the body portion 581 is semi-circular shaped to mate with head tube 41. Consequently, when the footrest retainer 580 is mounted, the body portion 581 rests on top of the front tubes 40, 45 with the front portion 584 abutting against the head tube 41, while the arms 582, 583 extend down along the inside and under the front tubes 40, 45.
3. Seat Back Recline The seat back recline will now be described making particular reference to FIGS. 4A, 4B, 11A and 11B. Shown in FIG. 11A is the front view of the overall design of the components comprising the reclining stroller seat assembly. The seat assembly consists of a back rest portion 801 permanently attached to a seat portion 805 which is permanently attached to a leg rest flap 810. Attached along the periphery of the back rest portion 801 and the seat portion 805 are left and right web sections 815, 820 which when attached to the frame of the stroller function as the sides of the stroller seat. Both left and right web sections 815, 820 contain apendages 825, 826 which are intended to fold around the handle tube 20, fastened to the upper portion of the handle tube 20 by the right and left canopy mounts 735, 736, through holes 890, 895 in the web section, the lower section of the web appendage fastened to the handle tube 20 by hook-and-loop type fasteners 865, 870, 875, 880, or alternatively, fabric retainers with screws.
In alternative embodiments, the webs 815, 820 might be forshortened in other ways. For example, the webs 815, 820 might each include a pair of zipper halves arranged in V-configuration with part of the webs 815, 820 serving as a gusset or dart between the zipper halves. When the zipper halves are unzipped, the seat back rest panel 801 reclines, supported by the webs 815, 820. When the zippers are zipped, the seat back rest portion 801 is pulled up into a more upright position, because the gusset or dart portions of the webs 815, 820 would be taken up as slack, and the webs 815, 810 are effectively foreshortened by the distance between the unzipped zipper halves, which are now zipped together.
As illustrated by the rear view in FIG. 11B, just below the intersection of the back rest portion 801 and the seat portion 805 lies a horizontal strip to which the right and left sliding seat mount straps 925, 920 are attached. At the end of the left sliding seat mount strap 920 lies a conventional buckle consisting of two seem-circular rings 935. The end of the right sliding seat mount strap 925 is interwoven between the rings 935 at the end of the left sliding seat mount strap 920 to couple the left and right sliding seat mount straps around the left and right seat tubes 50 and 60. The loop formed by the left 920 and right 925 sliding seat mount straps around and under the left and right seat tubes 50, 60 slides along the tubes during the folding process. This allows the seat back to remain in the upright or reclined position when folded and unfolded.
4. Automatically Latching Side Frame Latches The front tubes 40, and 45 have optional lower cover members 100, 90, as well as spring-loaded latch handles 140, 150. When the frame is in the fully extended, unfolded orientation, the lower grooves 141, 151 in the latch handles 140, 150 engage the handle tube 20 to hold the frame in the fully unfolded position.
To reconfigure the stroller from the folded position to the open unfolded position, the handle tube 20 is pivoted relative to the front tubes 40, 45 and will move through a range of angled positions including the angled position shown in FIGS. 6A and 6B. As the handle tube 20 continues to be pivoted, it reaches the intermediate position shown in FIGS. 6C and 6D, at which point the lower edges 142 of the latch handles 140, 150 come into a sliding camming contact with a portion of the handle tube 20. This camming contact urges the latch handles 140, 150 to be rotated outwardly, against the spring biased pressure. This permits the handle tube 20 to continue to be pivoted upwards relative to the front tubes 40, 45 until the handle tube 20 and the front tubes 40, 45 are substantially parallel as shown in FIGS. 6E and 6F. At this point, the side latch handles 140, 150 are free to rotate inward so that the inner grooves 141, 151 engage and entrap the handle tube 20. (The locked position with the latches 140, 150 rotated inward is shown in FIGS. 5B, 6E and 6F.) The inward biasing force on the latch handles 140, 150 that is provided by the torsional coil springs 670,680 urges the handles into this closed position. The stroller is now locked in the completely unfolded operative position until both latch handles 140, 150 are simultaneously rotated outward (the latches are shown rotated outward in FIG. 5C) against the spring pressure again to permit folding of the stroller.
5. Seat Belt Restraint Shown in FIG. 7 is a seat belt assembly constructed in accordance with the present invention. The seat belt assembly of the present invention includes a pair of waist straps 830, 835, that are permanently attached to a horizontal strip 850 located on the front section of the back rest portion 801.
The forward ends of the waist straps 830, 835 are coupled to female buckle parts 840, 845 adapted to engage with adjacent male buckle parts 856, 857 located on the main buckle 855 (male buckle 857 is hidden in FIG. 7). Both waist straps 830, 835 are adjustable at the intersection of the female buckle parts 840, 845 and the corresponding waist straps 830, 835. This is to accommodate children of smaller or larger sizes. As can be readily observed from FIG. 7, both female buckle parts 840, 845 are attached to their corresponding waist straps 830, 835 via weaving the waist strap 830, 835 through three parallel openings on the female buckle pad 840, 845. The end of each waist strap 830, 835 is folded over itself to prevent the waist straps 830, 835 from completely disassociating themselves from their corresponding female pads 840, 845.
As can be readily seen in FIG. 7, the male backle pads 856, 857 of the seat belt assembly are permanently attached to a center crotch section 855 of the restraining device by a stitched loop 858 of conventional strapping material which is stitched to the material comprising the center crotch section 855. Thus, the male buckle pads 856, 857 are always in position for use and always attached to the crotch strap 855. This configuration prohibits use of the waist straps 830, 835 without the center crotch strap 855 since the male buckle parts 856, 857 are permanently attached to the center crotch strap 855. The center crotch strap 855 is constructed such that the material creates an envelope surrounding the otherwise exposed male buckle pads 856, 857, said envelope decreasing in width traveling down towards the seat 805.
In a preferred embodiment the envelope is stitched closed, allowing sufficient room for the male buckle parts 856, 857 and the femalebuckle parts 840, 845 to be completely covered when in the locked position. The overall appearance of the center crotch strap 855, when viewed from the front of the stroller is tapered as shown. The envelope is formed by folding a portion back on itself and stitching the top of the free end of the center crotch material 855 to its location of intersection with the remaining center crotch strap material 855. In alternative embodiments, the envelope might partially cover the male and female buckle pads or not cover them at all.
As illustrated in FIG. 7, each female buckle part 840, 845 has a receptacle for receiving the free ends of the male buckle pads 856, 857 attached to the center crotch strap 855. The female buckle parts 840, 845 are adapted to receive the inwardly flexible resilient finger of their counterpart male buckle parts 856, 857. The female buckle parts 840, 845 are rectangular in nature, having an opening in the center allowing for direct access to the male parts 856, 857 by the user when the male parts 856, 857 are in the locked position, said opening being the means by which the male 856, 857 and female parts 840, 845 are uncoupled.
As illustrated in FIG. 7, each male part 856, 857 has a central resilient appendage movable by the operator for coupling and uncoupling with respect to the female pads 840, 845.
6. Automatically Engaging Brake When Frame Folded Turning now to FIGS. 8A through 8C, it will be seen that the handle tube 20 and the rear tube 30 are arranged so that when the stroller frame is fully folded, a portion of the handle tube 20 contacts each of the brake members 300, 310 and forces the brake levers 300, 310 downward so that they then engage a wheel tooth to lock the respective rear wheel 260, 270.
7. Folding Sequence and Hinge Angles The folding sequence will now be described making particular reference to FIGS. 10A through 10F. Depicted in FIG. 10A is the stroller as it appears in the fully unfolded position. Note the orientations and connections of the handle tube 20, the rear support tube 30, the left and right seat tubes 50 and 60 (only tube 50 is visible), and the left and right front tubes 40 and 45 (only tube 45 is visible). To commence the folding process, the spring loaded latches 140, 150 are rotated out away from the handle tube 20 by the user (in the manner shown in FIG. 5c).
As illustrated in FIG. 10C, as the frame collapses, the front tubes 40, 45, the handle tube 20, and the seat tubes 50, 60 all continue to rotate toward the rear support tube 30 in the same fashion as described above. The ends of the front tubes 40, 45, once connected to the handle tube 20, now lie in a plane perpendicular to the horizontal. The handle tube grip 770, which was originally angled upward, is now angled downward via rotation about the front tubes 40, 45 and the rear support tube 30. As further illustrated in FIG. 10C, the reclining seat shifts its position as the rotation occurs. The reclining seat remains fixed at the handle tube 20 intersection (via screws through holes 890, 895 in the seat fabric webs 815, 820) and at the connections to the head tubes 40, 45 (via screws through leg rest flap located just above the horizontal strap 940). However, the seat bottom 805 slides along the left and right seat tubes 50, 60 during the folding process. As also illustrated in FIG. 10C, the loop formed by the coupling of the seat mount straps 920, 925 around the seat tubes 50, 60 slides upward and towards the front of the stroller. The back rest portion 801 now lies on the other side of the handle tube 20, rotating about its connection with the seat portion 805. The seat portion 805 and the exposed end of the leg rest flap 810 are brought closer together throughout the folding process.
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