SPLIT OCCUPANT RETENTION STRUCTURE FOR STROLLERS

Abstract

An occupant retention structure for a child's stroller utilizes an abbreviated upper horn extending downwardly from the underside of the tray and an abbreviated lower horn that extends upwardly from the seat pan beneath the lower horn without connection therebetween. Other protuberances formed by the tray and seat structures cooperates with the upper and lower horns to prevent the passage of a small probe used to determine if a child's torso or head could pass through an opening. The tray is mounted on a forwardly extending mounting pin for rotation thereon, while being rotatable about an axis of rotation perpendicular to the mounting pin to provide a swivel connection for the tray on one of the arm rests. A spring-loaded detent allows the tray to be released from the mounting pin for removal thereof from the stroller. The opposing end of the tray is latched to the other arm rest.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The advantages of this invention will be apparent upon consideration of the following detailed disclosure of the invention, especially when taken in conjunction with the accompanying drawings wherein:

FIG. 1 is a front elevational view of a stroller incorporating the principles of the instant invention, the conventional fabric portions of the stroller forming the seat cushion, hood and other non-frame components of the stroller being removed for purposes of clarity;

FIG. 2 is a top plan view of the stroller shown in FIG. 1;

FIG. 3 is an enlarged rear elevational view of the split occupant retention structure on the stroller depicted in FIG. 1;

FIG. 4 is an enlarged front elevational view of the split occupant retention structure on the stroller depicted in FIG. 1;

FIG. 5 is a perspective view of a small probe used to determine if an occupant retention apparatus is successful;

FIG. 6 is a top plan view of the small probe shown in FIG. 5;

FIG. 7 is an enlarged top plan view of the tray and arm rest assembly depicted on the stroller shown in FIG. 1;

FIG. 8 is a cross-sectional view of the right arm rest corresponding to lines 8-8 of FIG. 7 to show the swivel mounting device for the tray;

FIG. 9 is an enlarged elevational view of the rear axle of the stroller shown in FIG. 1;

FIG. 10 is a top plan view of the rear axle member; and

FIG. 11 is a cross-sectional view through the brake actuation lever corresponding to lines 11-11 of FIG. 9.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring now to FIGS. 1-4, a stroller incorporating the principles of the instant invention can best be seen. The stroller 10 includes a wheeled frame 12 that is supported on front and rear ground-engaging wheels 18, 19 that permit mobile movement of the stroller 10 over the surface of the ground to transport children. The frame 12 includes a pair of transversely spaced front legs 13 on which the front wheels 18 are mounted and a corresponding pair of transversely spaced rear legs 14 on which the rear wheels 19 are mounted. The frame also includes a pair of upwardly extending, transversely spaced handle tubes 15 terminating in a handle bar 16 defining a preferred generally inverted U-shaped configuration. A generally horizontally oriented seat assembly 20 and an arm rest and tray assembly 30 are supported on the front and rear legs 13, 14 and the handle tubes 15.

The front and rear legs 13, 14 are pivotally connected to the arm rest assembly 30. The seat assembly 20 is pivotally connected to the front legs 13 and to the handle tubes 15. Preferably, the handle tubes 15 are articulated with a pair of stabilizer members 17 that establish a pivoting frame structure 12 for the stroller 10 that is convertible between an expanded operative configuration, depicted in FIG. 1, and a collapsed, folded storage configuration that is better shown and described in co-pending U.S. patent application Ser. No. ______, filed contemporaneously herewith, and entitled “Stroller with Spring-Assisted Fold Mechanism”, the contents of which are incorporated herein by reference.

A latch mechanism 40 is mounted in the handle tubes 15 and includes an actuation mechanism 45, preferably formed with a trigger-like actuation lever 46, supported at the center of the handle bar 16 to operate retractable latch members housed within the handle tubes 15 to lock into the rear legs 14 and fix the articulation of the handle tubes 15 with respect to the corresponding stabilization members 17 in an upright orientation. The retraction of the latch members allows an articulation of the handle tubes 15 relative to the stabilization members 17 to accomplish a folding of the stroller frame 12 into the compact storage configuration.

The seat assembly 20 is formed with a seat pan 22 that has an abbreviated lower horn 25 projecting upwardly from the seat pan 22 toward the tray 39. On opposing sides of the lower horn 25 are leg openings 27 that allow the passage of the legs of a child occupant positioned on the seat pan 22. To the outside of the leg openings 27, the seat pan 22 is further formed with raised mounting structures 28 into which rearwardly extending seat tubes 29 are mounted to provide support for a rearwardly positioned basket structure (not shown). As is best seen in FIGS. 3 and 4, the raised mounting structure 28 for the seat tubes 29 provides protuberances on the outside periphery of the seat pan 22 that projects above the surface of the leg openings 27, though not as high as the abbreviated lower horn 25.

The arm rest and tray assembly 30 is formed with a pair of transversely spaced arm rests 32 interconnected at the forward ends thereof by a tray 39 that is pivotally connected to one of the arm rests 32 and latched to the opposing arm rest 32, as will be described in greater detail below, such that the tray 39 can be disconnected from the latched arm rest 32 and pivoted about the other arm rest 32 to permit access into the seat assembly 20 onto which a child can be seated. The underside of the tray 39 is formed with an abbreviated upper horn 35 that extends downwardly toward the lower horn with which the upper horn is aligned, but spaced vertically therefrom. Furthermore, the underside of the tray is formed with a pair of upper protuberances 37 positioned on opposing sides of the upper horn 35. Each upper protuberance 37 extends downwardly from the tray 39, though not as far as the central upper horn 35. Preferably, the tray 39 is also formed with a pair of small side protuberances 38 located generally diagonally opposite the lower horn 25 with respect to the leg opening 27.

The small probe 49, used as a standard to determine the ability of an opening to restrict the passage of the torso of a child occupying the stroller on the seat pan 22, is depicted in FIGS. 5 and 6. As can be seen in FIG. 6 the upper end of the test probe 49 defines a generally rectangular block that, if capable of passing through an opening, renders unsuccessful the test for the opening being able to retain the child's torso. While scale of the test probe 49 in FIGS. 5 and 6 is not intended to correspond to the scale of the leg openings 27 depicted in any of FIGS. 1-4, the size of the diagonal dimension extending between the side protuberance 38 and the side of the lower horn 25, as well as the size of the diagonal dimension between the side of the upper horn 35 and the raised mounting structure 28 on the periphery of the seat pan 22, is not sufficient to allow the test probe 49 to pass through the leg opening 27. Similarly, the height of the leg opening 27 measured between the upper protuberance 37 and the seat pan 22 is not sufficient for the passage of the test probe 49. Furthermore, the vertical height between the corresponding sides of the lower and upper horns 25, 35 won't permit the passage of the height of the test probe being passed horizontally through the leg openings 27.

Since the lower and upper horns 25, 35 are not connected, and further are spaced a significant distance apart, the movement of the arm rest and tray assembly 30 relative to the seat assembly 20 during the pivotal movement of the frame 12, when converting between the operative and storage configurations, is not restricted, as would be found if the lower and upper horns 25, 35 were connected to provide a solid vertical barrier, or even if the lower and upper horns 25, 35 were sufficiently close together to interfere.

The mounting of the tray 39 to the arm rests 32 is best seen in FIGS. 7 and 8. While the reference below to the left and right arm rests 32 are used as a matter of reference, as depicted in the drawings, one skilled in the art will recognize that the mounting connections of the tray 39 described below could also be reversed so that the tray opens oppositely to that shown in the drawings. The tray 39 is pivotally connected to the right arm rest 32 and latched to the left arm rest 32. The latch mechanism 52 is a conventional button-release latch mechanism that uses a spring-loaded catch which is manipulated through a depressible button 53 to release the tray 39 from the left arm rest 32.

Once released from the left arm rest 32, the tray 39 is free to pivot about the connection with the right arm rest 32. The right arm rest 32 is formed with a forwardly projecting mounting pin 33 having a pivot pin 57 inserted through the forward end thereof. The tray 39 carries a bearing 58 to permit rotation of the tray 39 about the pivot pin 57 independently or in conjunction with the pivotal movement of the tray 39 about the mounting pin 33. With this arrangement, the tray 39 can pivot generally horizontally about the axis of rotation defined by the pivot pin 57, or generally vertically about the axis of rotation defined by the forwardly extending mounting pin 33. Since the pivot pin 57 rotates with the tray 39 about the axis of rotation defined by the mounting pin 33, the tray 39 remains capable of pivoting about the pivot pin 57 irrespective of the orientation of the pivot pin 57, affecting a swivel movement for the pivoting action of the tray 39. Also, if the tray 39 is to be removed completely from the stroller 10, the latch mechanism 52 is released at the left arm rest 32 and the spring-loaded button (not shown) is released at the right arm rest 32 to enable the tray 39 to be lifted off the mounting pin 33.

Referring now to FIGS. 9-11, the details of the brake actuation mechanism 60 can best be seen. The rear axle 61 rotatably supports each of the rear wheels 19 at the transversely opposing ends thereof such that the rear axle 61 itself does not rotate. Near each transversely opposing end of the rear axle 61 a rearwardly extending tab 62 is welded to the axle 61. The brake actuation mechanism 60 includes a pair of laterally spaced actuation levers 63 that are connected directly to the brake mechanism 65 operatively associated with each respective rear wheel 19. The axle tabs 62 are positioned to be housed inside of the brake actuation levers 63, as is best seen in FIG. 11, such that pressing down on one of the actuation levers 63 to lock the brake mechanism 65 on the corresponding rear wheel 19 causes the rearwardly extending axle tab 62 to rotate downwardly with the actuation lever 63.

Since the axle tab 62 is welded to the rear axle 61, the downward movement of the first axle tab 62 causes a corresponding downward movement of the opposing axle tab 62, which is housed inside the other brake actuation lever 63 and causes the brake mechanism 65 on the opposing rear wheel 19 to also lock the rotation of the rear wheel 19. Consequently, the manipulation of either of the brake actuation levers 63 causes both brake actuation levers 63 to engage the brake mechanism 65 on both rear wheels 19 and lock the rotation of the rear wheels 19 until either of the brake actuation levers 63 are raised to release the brake mechanism 65. The interconnection of the opposing rear wheel brake mechanisms 65 is, thus, accomplished through the rotation of the rear axle 61 in response to the movement of the rearwardly extending axle tabs 62 without the need for additional cross bars, links and other related components to provide simultaneous brake actuation.

It will be understood that changes in the details, materials, steps and arrangements of parts which have been described and illustrated to explain the nature of the invention will occur to and may be made by those skilled in the art upon a reading of this disclosure within the principles and scope of the invention. The foregoing description illustrates the preferred embodiment of the invention; however, concepts, as based upon the description, may be employed in other embodiments without departing from the scope of the invention.

Claims

1. A stroller for transporting a child comprising: a frame having front legs and rear legs terminating in corresponding front and rear ground engaging wheels, and a handle assembly extending upwardly to terminate in a grip portion;a seat assembly mounted on said frame, said seat assembly including a seat pan on which the child can be seated, said seat pan being formed with a centrally positioned, abbreviated lower horn extending upwardly from said seat pan;a tray supported on said frame above said seat assembly, said tray including a centrally positioned, abbreviated upper horn extending downwardly from said tray in general alignment with said lower horn; andsaid seat assembly and said tray defining laterally spaced leg openings on opposing sides of said upper and lower horns, said leg openings being limited in size by said seat assembly and by said tray, including said upper and lower abbreviated horns, such that a standard ASTM test probe cannot pass through either of said leg openings.

2. The stroller of claim 1 wherein said tray is also formed with a pair of upper protuberances extending downwardly on opposing sides of said upper horn, said upper protuberances limiting a vertical height dimension of said leg openings such that said test probe cannot pass through said leg openings.

3. The stroller of claim 2 wherein said seat pan is also formed with a lower protuberance at a laterally spaced periphery on either side of said lower horn which cooperates with said upper horn to limit a diagonal dimension of said leg opening extending between said upper horn and the corresponding said lower protuberance to prevent said test probe from passing through said leg opening.

4. The stroller of claim 3 wherein said tray is also formed with a side protuberance outboard of each respective upper protuberance, each said side protuberance cooperating with said lower horn to limit a diagonal dimension of said leg opening extending between said lower horn and the corresponding said side protuberance to prevent said test probe from passing through said leg opening.

5. The stroller of claim 4 wherein said upper protuberances have a vertical height extending downwardly from said tray that is less than a corresponding vertical height of said abbreviated upper horn.

6. The stroller of claim 4 wherein each of said side protuberances and each of said lower protuberances have a depth dimension extending into said leg opening that is less than said vertical height dimension of said upper horn.

7. The stroller of claim 1 further comprising a pair of laterally spaced arm rests supported on said frame, said tray being mounted on said arm rests by a latch mechanism corresponding to one of said arm rests and a pivot mechanism corresponding to the other of said arm rests, said pivot mechanism permitting said tray to pivot about two orthogonally extending pivot axes.

8. The stroller of claim 1 wherein said upper horn terminates in a vertically spaced relationship with respect to said lower horn.

9. A stroller for transporting a child, comprising: a frame;a seat assembly supported from said frame, said seat assembly including a seat pan on which the child can be seated, said seat pan being formed with a first protrusion extending upwardly from said seat pan;a transversely extending member supported from frame above said seat assembly, said transversely extending member having a second protrusion extending upwardly therefrom; andsaid seat pan and said transversely extending member defining a leg opening located on opposing sides of said first and second protrusions for the passage of a leg of the child while seated on said seat pan, said first and second protrusions preventing the torso of the child from passing between said seat pan and said transversely extending member.

10. The stroller of claim 9 wherein said first and second protrusions are in generally vertical alignment.

11. The stroller of claim 10 wherein said first and second protrusions terminate in a vertically spaced relationship.

12. The stroller of claim 11 wherein said seat pan is also formed with a lower protuberance at a laterally spaced periphery on either side of said first protrusion which cooperates with said second protrusion to limit a diagonal dimension of each said leg opening extending between said second protrusion and the corresponding said lower protuberance to prevent a standard ASTM test probe from passing through each said leg opening.

13. The stroller of claim 12 wherein said transversely extending member is a tray formed with a side protuberance at a laterally spaced periphery on either side of said second protrusion, each said side protuberance cooperating with said first protrusion to limit a diagonal dimension of each said leg opening extending between said first protrusion and the corresponding said side protuberance to prevent said standard ASTM test probe from passing through said leg openings.

14. The stroller of claim 13 wherein said tray is formed with a pair of upper protuberances extending downwardly on opposing sides of said second protrusion between said second protrusion and the corresponding said side protuberances, said upper protuberances limiting a vertical height dimension of the respective said leg openings to prevent passage of said standard ASTM test probe through said leg openings.

15. The stroller of claim 14 wherein said upper protuberances have a vertical height extending downwardly from said tray that is less than a corresponding vertical height of said second protrusion.

16. A stroller for transporting a child comprising: a frame having front legs and rear legs terminating in corresponding front and rear ground engaging wheels, and a handle assembly extending upwardly to terminate in a grip portion, said front legs, said rear legs and said handle assembly being pivotally interconnected to permit said frame to move between an expanded operative configuration and a compact folded configuration;a seat assembly mounted on said frame, said seat assembly including a seat pan on which the child can be seated, said seat pan being formed with a centrally positioned lower protrusion extending upwardly from said seat pan; andan arm rest and tray assembly mounted on said frame above said seat assembly, said arm rest and tray assembly including a pair of laterally spaced arm rests that are interconnected at forward ends thereof by a transversely extending tray, said tray including a centrally positioned upper protrusion extending downwardly from said tray in general alignment with said lower protrusion, said seat assembly and said arm rest and tray assembly defining laterally spaced leg openings on opposing sides of said upper and lower protrusions for the passage of a leg of the child seated on said seat pan, said upper and lower protrusions preventing the child's torso from passing between said seat pan and said tray.

17. The stroller of claim 16 wherein said upper and lower protrusions are abbreviated and terminate in a vertically spaced relationship.

18. The stroller of claim 17 wherein said leg openings are limited in size by said seat assembly and by said arm rest and tray assembly, including said upper and lower protrusions, to prevent the passage of a standard ASTM test probe from passing through said leg openings.

19. The stroller of claim 18 wherein said tray is also formed with a pair of upper protuberances extending downwardly on opposing sides of said upper protrusion, said upper protuberances having a vertical height extending downwardly from said tray that is less than a corresponding vertical height of said abbreviated upper protrusion, said upper protuberances limiting a vertical height dimension of said leg openings such that said test probe cannot pass through said leg openings.

20. The stroller of claim 19 wherein said seat pan is also formed with a lower protuberance located at a laterally spaced periphery of said seat pan on both sides of said lower protrusion to cooperate with said upper protrusion to limit a diagonal dimension of said leg opening extending between said upper protrusion and the corresponding said lower protuberance to prevent said test probe from passing through said leg opening, said tray also being formed with a side protuberance outboard of each respective upper protuberance, each said side protuberance cooperating with said lower protrusion to limit a diagonal dimension of said leg opening extending between said lower protrusion and the corresponding said side protuberance to prevent said test probe from passing through said leg opening.