GB2413311A

GB2413311A - Coupling two strollers to form a tandem stroller

Info

Publication number: GB2413311A
Application number: GB0503527A
Authority: GB
Inventors: Donna Naseby
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-24
Filing date: 2005-02-21
Publication date: 2005-10-26
Anticipated expiration: 2025-02-21
Also published as: GB0503527D0; GB2413311B

Abstract

A pushchair or stroller for carrying two children comprises two pushchair units connected together. One of the pushchair units is provided with detechable wheel(s) 20 and a detachable handle 22 whilst the other pushchair is provide with brackets 14. Elements of the frame of one of the pushchairs are revealed by detaching the wheels 20 and the handle 22. These elements co-operate with the brackets 14 to attach one pushchair unit to the other.

Description

PUSHCHAIR

Field of the Invention

This invention relates to hand propelled load carrying vehicles, for example pushchairs of the type used to convey infants or small children. In particular, the invention relates to an apparatus and method for connected together two or more such pushchairs.

Background of the Invention

Pushchairs are widely used for conveying infants and small children. Most families have more than one child, and in many cases families have two children both of whom require the use of a pushchair.

Whilst a toddler may be able to walk, there may be occasions, where the child is tired and needs to sit in a pushchair.

Most families with more than one child cannot provide one to one attention to all of their children at all times, in particular, one parent Is often In a situation where both of those children will require use of a pushchair. This is very old problem, and many solutions have been proposed. For example, pushchairs with two seats are available. Such double pushchairs can be configured with the seats side by side, or one in front of the other.

lthe problem with double pushchairs is that they are much less manoeuvrable than pushchairs havmg. . Only a single seat. The result is that farnlies will often purchase one or more single pushchair, and ae double pushchair, only using the double pushchair when one adult must look after two children...

1\ number of proposals have been made to attach two smgle pushchairs together, thereby allowing. .. -

families to purchase only the number of pushchairs they require, and to use them as single or double.

pushchairs as required.

US 6,527,294 describes a device m which two pushchairs are connected together using clips. The front and rear wheels on one side of one of the two pushchairs are pivoted away from the ground.

When looking at the combination of the two pushchairs joined together, at the front of the vehicle, there are three sets of two wheels in contact with the ground.

G13 2,373,484 Is another device where two pushchairs are joined together with the wheels on one side of the two pushchairs pivoted away from the ground. To connect the two pushchairs together one side of each pushchair Is equipped with a rail extending from the front to the rear of the pushchair. The shapes of the respective rails are such that one mates and interlocks with the other.

To attach the two pushchairs together requires the user to unlock the front an rear wheels of one of the pushchairs, retract them and lock them m the retracted position, to align the rails of each pushchair, and then to hold one pushchair still whilst pushing the other pushchair backwards until the two are locked together. To disconnect the two pushchairs, the process must be earned out in reverse.

It would be desirable to provide an Improved pushchair which can be connected to another pushchair.

Summary of the Invention

One aspect of the mventon provides a hand propelled load carrying vehicle as specified In Claim 1. ..

Other preferred features of the Invention are specified In the claims dependent on Claim 1. ...

The present Invention provides a simple means of attaching together two hand propelled load carrying vehicles. In the case of pushchairs, the ability to quickly attach or detach two pushchairs Is of great advantage to parents. Not only can parents avoid having two single pushchairs and a double pushchair, but the very simple and fast method of attaching and detaching the vehicles Is particularly valuable when caring for children, since children require attention, so the smaller amount of time spent attaching or detaching vehicles together the better.

The present nvenuon Improves on the prior art by usmg components of the frames of vehlde to constitute a secure means of attaching vehicle units together, rather than providing means to move wheels to an out of use pOSIU011, and then either providing relatively complex attachment means, or msubstanual attachment means such as clips.

Another advantage provided by the present nvenuon Is that where the hand propelled vehicle IS a pushchair of the type that folds up, when two such pushchairs are joined together aeeordng to the Inventor, each pushchair can sell be folded up without separating the two pushchairs.

Brief Description of the Drawings

In the drawings, which by way of example illustrate a hand propelled vehicle of the Invention: Figure I Is a schematic representation of a pushchair; Figure 215 a schematic represeotanon of two pushchairs)omed together; Figure 3 Illusurates the steps involved In Coming together two pushchairs according to the invention; Figure 4 IS a schematic representation of a pushchair according to a second aspect of the nvenuon.

. Figure 5a is an exploded schematic representation of a second embodiment of a pushchair according .

to the lnvenUon; Figure 5b is an exploded schematic representation of one wheel assembly of the pushchair Illustrated , m Figure 5a; :::: I; igure 5c is an exploded schematic representation of another wheel assembly of the pushchar.

illustrated In Figure 5b; Figure 615 a schematic representation of a bracket forming part of the pushchair Illustrated In Figures 5a to 5c; and Figure 7 Is a cross-sectional view of the bracket Illustrated In Figure 6; Figure 8 is a schematic representation of a connector; Figure 9 Is a cross-sectional clevaton of the connector illustrated m Figure 8; figure 10 Is a schematic representation of another connector; Figure 11 is a cross-sectonal representation of the connector 11usurated in Figure 10; Figure 12 Is a cross-sectional elevation of a collar; Figure 13 Is a side view of the collar Illustrated in Figure 12; Figure 14 Is an exploded schematic representation of a third embodiment of a pushchair according to the nvenuon; Figure 14a Is a schematic representation of a connector Illustrated in Figure 14; Figure 15 Is an exploded schematic representation of a fourth embodiment of a pushchair acardng to the tnvenuon; and Figure I Sa IS a schematic representation of a connector illustrated In Figure 15.

Detailed Description of the Preferred Embodiments

Referrmg now to Figure I, there is shown a pushchair I comprising two spaced apart substantially . triangular frames 2 and 3, joined together by a folding mechanism 4 which includes a horizontal..

cross-member 5. The triangular frame 2 Includes an elongate frame member 6 supporting a front, wheel arrangement 9 at one of its ends, and a handle member 10 at Its other end. The front wheel . arrangement 9 includes two spaced apart wheels 11 and IS mounted in the end of the tubular member....

6 to swivel about a substantially vertical axis when in use. A substantially upright frame member 7. . - extends downwardly from the elongate tubular member 6 and is provided at its free end with a wheel arrangement 12 Including two spaced apart wheels 13. The wheel arrangement Is fixed so that the wheels rotate In a plane parallel with the plane of the triangular frames 2 and 3, thereby ensuring that the pushchair follows a straight path. A lower bracing member 8 connects the elongate frame member 6 to the upright frame member 7 at a point on the frame members 6, 7 above but in close proximity to the wheel arrangements 9 and 12.

I'he triangular frame 2 Is provided with three tubular brackets 14. The first tubular bracket 14 Is attached to the outside of the elongate frame member 6 below but cerise to the handle member 10.

Thc second tubular bracket 14 Is again attached to the outside of the elongate frame member 6, but In this case cerise to the wheel arrangement 9. Thc third tubular bracket 14 is attached to the outside of the substantially upright frame member 7, In close proximity to the wheel arrangement 12.

1\ seat 15, Including a harness 16 extends between the triangular frames 2 and 3. foot-rest 17 also extends between the triangular frames 2 and 3. Both the seat 15 and the foot-rest 17 are made of a flexblc material, thereby allowing folding of the pushchair.

Thc triangular frame 3 includes an elongate frame member 18 supporting a front wheel arrangement 9 at one of its ends, and a handle member 22 at Its other end. The front wheel arrangement 9 includes two spaced apart wheels 11 and Is mounted on a stub 20 to swivel about a substantially vertical axis when In use. 'l'he lower free end of the elongate frame member 18 fits Inside and engages with the stub 20, the free end of the elongate frame member 1X and the Inside of the stub 20 - constituting a male/female connection. Thcsc two elements are locked together by means of spring..

loaded studs 21 which are located In elongate member 18. The stub 2() Is provided with apertures 2X in which the studs locate. I'hc springs of the spring loaded studs 21 force the studs outwards, ...

thereby ensuring positive locking of the stub 2() to the elongate frame member 18. To detach the .

stub 20 from the elongate frame member 18, the two studs 21 are pushed together between finger.... ë

and thumb, and the stub 2() Is pulled away from the free end of the elongate frame member 18. The. ., studs 21 have rounded heads to facilitate msernon and removal of the stub 20 from the elongate frame member 18. s

The handle member 22 is attached to the elongate frame member 18 by a male/female connection, the free end of the handle member 22 locating inside the upper free end of the elongate frame member 18. The handle member 22 Is locked in place by spring loaded studs 23. 'the elongate member 18 Is provided with apertures In which the studs 23 locate. The springs of the spring loaded studs 23 force the studs outwards, thereby ensuring a positive locking of the handle member 22 to the elongate frame member 18. To detach the handle member 22 from the elongate frame member 18, the two studs 23 are pushed together between finger and thumb, and the handle member 23 is pulled away from the upper free end of the elongate frame member. 'the studs 23 have rounded heads to facilitate insertion and removal of the handle member 23 from the elongate frame member 18.

Figure 2 t11ustrates two pushchairs A and B according to the Invention Joined together. The stubs 20 and 25, and the handle member 22 (not shown) of the pushchair A are removed. The lower free end of the elongate frame member 18 Is inserted Into the bracket 14 attached to the lower end of the elongate frame member 6 of the pushchair B. The free end of the substantially upright frame member 24 is inserted Into the bracket 14 attached to substantially upright frame member 7 of the pushchair B. To complete attachment of pushchair A to pushchair B. the upper free end of elongate frame member 18 of pushchair A is aligned with the upper bracket 14 of pushchair B. and the handle 22, which had previously been removed from pushchair A IS Inserted through the bracket 14 and . back into the elongate frame member 18. This last stage is best seen In Figure 3. : . . The procedures for attaching and detaching two pushchairs according to the Invention will now be .

described with reference to Figure 3. - .e

In step 1, the stub 20 mounting wheel arrangement 91S detached from the elongate frame member. . . 18 by pressing together the spring-loaded studs 21. The same procedure is followed to detach the stub 25.

In step 2, the free end of the elongate frame member 18 Is inserted Into the bracket 14, the studs 21 engaging with apertures 27 in the bracket 14.

In step 3, the handle member 22 Is released from the elongate frame member 18 by pressing together the sprng-loaded studs 23 and pulling on the handle member 22.

Tn step 4, the elongate frame member 13 Is aligned with the bracket 14.

In step 5, the handle member 22 Is Inserted Into the bracket 14 and Into the aligned elongate frame member 18, the spring-loaded studs 23 locknginto the apertures 28.

To detach the two prams and re-assemble pram A, the attachment process described above Is performed In reverse.

As can be seen from both Figures 1 and 2, the lower brackets 14 (attached to the lower end of the elongate frame member 6 and the substantially upright frame member 7 respectively) are each prodded with apertures In which the sprng-loaded studs 21 can engaged.

In the embodiment of the invention shown the vehicle units Coined together are pushchairs. Equally, the vehicle units could be prams, other hand propelled child carrying vehicles, or other hand propelled load carrying vehicles. . . . Tn the drawings, and Figure 1 In particular, the triangular frames 2, 3 Include the first and second parts of the attachment means respectively. Alternatively, a pair of vehicle units, such as pushchairs, may be manufactured where one of the vehicle units Is provided with the first part of the attachment means and the other vehicle unit is provided with the second part of the attachment means. . . A second embodiment of the Invention Is Illustrated in Figures 4 to 13 and will now be described with reference to those figures. A pushchair 29 Includes a first side frame comprising an elongate front frame member 45a to which Is attached a wheel assembly B comprising a pair of spaced apart wheels 42 mounted on a stub 41. The stub 41 is releasably attachable to the elongate front frame member 45a by means of a connector 46, which Is best shown in Figures 8 and 9. The stub 41 mounts a fitting 40 which consists of a pair of tubular brackets 40a and 40b connected by a web 40c, the tubular bracket 4()b Including a tapered portion 40d. The fitting 40 Is attached to the stub 41 by means of fasteners passing through aligned bores 41a and 40c of the stub 41 and the fitting 40 rcspecuvely.

The tubular bracket 40 (best shown In Figures 6 and 7) consists of a first tubular bracket 40 which slides onto the stub 41 such that the bores 4()e align with the bores 41 a of the stub 41. With the fitting 40 securely attached to the stub 41 the second tubular bracket 40b projects outwardly from the pushchair 29.

I'he elongate front frame member 45a also mounts a handle assembly which comprises a handle insert 52, Insertable into the upper free end of the elongate front frame member 45a. A handle extension piece 53 attaches to the handle Insert 52 and to a handle 54. A fitting 40 is mounted on the extension piece 53, being attached thereto by fasteners engaging with aligned bores 40e and 53a of the tubular fitting 4()a and handle extrusion 53 respectively.

The first side frame further Includes an elongate rear frame member 45b to which a stub 47 Is . - attached a wheel assembly C comprising a pair of spaced apart wheels 49 mounted on a stub 47. The ' . . . stub 47 Is rclcasably attachable to the elongate rear frame member 45b by means of a connector 56, which is best shown in Figures 1() and 11. 'lthe stub 47 also mounts a fitting 4() which consists of a, pair of tubular brackets 40a and 4()b connected by a web 40c, the tubular bracket 40b including a. . tapered portion 4()d. 'I'he fitting 40 is attached to the stub 47 by means of fasteners passing through,,. ..

aligned bores 41a and 40e of the stub 47 and the fitting 4() rcspecavely, the tubular bracket 40b. . prolecung outwardly from the pushchair 29.

The pushchair 29 further comprises a second side frame including second front and rear elongate frame members 60 and 61. The front elongate frame member 60 mounts a wheel assembly A. The assembly Includes a connector 46 (best illustrated in Figures 8 and 9) which removably attaches the lower free end of the elongate member 60 to an extension member 36. A collar 39 is attached to the extension member 36 by means of a pm 38 passing through algmog apertures 39a and 38b in the collar and extension member 36 respectvcly. 'the collar 39 is described m greater detail with reference to Figures 12 and 13. The cxtenson member 36 IS rclcasably connectable to a stub 33 which mounts wheels 31 by means of a bracket 32. Located In the stub 33 is a span" member 35 provided with a protrusions 35a which extends through an aperture 34a In the said stub 34. 'I'hc extcnson member 36 Is also provided with an aperture 36a, which engages with the protrusion 35a when the pushchair Is assembled as Illustrated In Figure 4. This type of spring loaded fastener IS well known and of the type having domed surface. In order to release the stub 33 from the cxtcuslon member 36, a user simply presses against the front of the protrusion 35a and pulls the stub 33 away from the extension member 36. To re-attach the stub the user aligns the aperture 34a with the protrusion 35a and pushes the two pieces together. The protrusion 35a Is pushed inwards, the inner surface of the extcosion member 36 riding over the protrusion until it meets the aperture 36a whereupon the force of the spring 35 pushes the protrusion 35a through the aperture 36a.

I'he collar 39 Includes a tapered portion 39b which engages with the tapered portion 40d of the . ; second tubular bracket 40b when two of the pushchairs 29 as Illustrated in the Figure 4 are attached ' . ' one to the other. e. .

The pushchair ncludcs a second handle member 62, which composes a hand grip 63 and an end portion 64 of reduced damcter for Insertion Into the free end of the frame member 6(). 'lthe end An.

portion 64 includes one element of a fastemng means of the type described with reference to Figure ' ' 5b, i.e. a spring having a protrusion 65 Is inserted Into the end portion 64, and when the end portion 64 Is inserted In the free end of the upper free end of the frame member 60, the protrusion C5 engages with the aperture 66 to attach the handle to the pushchair securely.

lihe said protrusions may comprise studs, pins or ball bearings.

I'he procedure for attaching together two of the pushchairs 29 is very similar to that Illustrated In Figure 3. 'I'he procedure IS as follows: I) the user depresses the protrusion 34a and pulls the stub 33 and connected wheel 31 away from the extension member 36 (and hence the rest of pushchair 29); it) the same IS done with respect to the rear wheel assembly D; ) to remove the handle member 62, the protrusion 65 IS depressed and the handle Is pulled away from the frame member 6(); IV) the pushchair from which the wheels and handle have been removed are brought along side another pushchair 29 whereupon the lower part of each of the extension member is inserted Into one of the tubular brackets 40b; v) the free end 67 of the frame member 60 is aligned with the lower end of tubular bracket 40b, and the end portion 64 of the handle 62 Is passed through the tubular bracket 40b and mto the free end 67 of the frame member 60, such that the protrusion 65 engages with the aperture 66 to fasten the handle to the pushchair, and hence to fasten together the two a ë pushchairs 'a. ë

To disassemble two fastened together pushchairs 29 the procedure described above is followed m c.. e

reverse.

One of the problems associated with pushchairs of the type Illustrated In Figure 4 is that dimensional tolerance is relatively wide, and therefore distances between any two respective components on different pushchairs may differ noticeably. 'lthe mventon rcqu rcs elements of one pushchair to be aligned with elements of another. For the user, attachment of one pushchair to another must be as simple as possible. 'lithe provision of the tapered portion 40d of the tatting 40 compensates for any dimensional vanaton between pushchairs (wh ch may result from manufacturing processes or wear and tear). Furthermore, the provision of a taper 39b on the collar 39 causes the two pushchairs to fit together without noticeable play therebetween. When one pushchair Is attached to another, they are secured together by Insertion of the end 64 of handle member 62, having passed through a tubular portion 4()d of a fitting 40, Into the free end of the frame member 66 and being locked therein. The pushchair of the Invention Is very simple when compared to those of the prior art, both in terms of manufacture and assembly.

Refcrnng now to Figures 14 and 14a, there is shown a pushchair hav ng rear wheels only. In this embodiment of the invention, the means of attachment of one pushchair to another Is the same as that shown In figure 5a, except that the attachment of adjacent frame members 60 Is by means of a connector 68, which Includes an annular member 69a for attachment to frame member 60 and an open spun" clip 69b for attachment to a frame member of an adjacent pushchair. The annular member 69a and the open spring clip 69b are loaned together by a web 70. In use attachment of two pushchairs by the rear wheel and handle member Is achieved m the manner described with reference:.. . . to the embodiment illustrated In Figure 5a. 'lithe connector 68 rotates about the frame member to .

which the annular member 69a is attached and the open spring clip 69b is pressed onto the frame. :.

member of an adjacent pushchair. The connector 68 holds the lower part of the attached pushchairs a. . ë

m a substantaly hxed relationship to each other. The dimension of the web 70, the annular member 69a and the spring clip 69b arc substantially similar to those of the web 40c and the tubular brackets 40a and 4()b of the fitting 40, in order that adjacent frame members 60 of attached pushchairs are substantially parallel. Rotatably mounting the connector 68 on the frame member allows the said connector to be moved to a position where it does not project outwardly of the pushchair chassis when the connector is not required to connect together two pushchairs. The connector 68 is formed from a resilient matenal, and is preferably a plastics moulUtng, although other suitable materials could be used. The connector 68 may be attached to the frame member 60 such that it is not removable from the frame member.

Referring now to lectures 15 and 15a, there is shown a pushchair having three pairs of spaced apart wheels, two pasts 49 being at the rear of the pushchair and the third 80 being attached to the chassis of the pushchair where members 81 are joined together. When two pushchairs of the type Illustrated in Figure 15 are Joined together, the manner of attachment Is as described with reference to the previously described embodiments, except that no front wheels are detached. Instead, the two pushchairs are connected together by a connecting means 82, which comprises a pair of tubular brackets 83, a frame member 60 of each pushchair being provided with one of the said brackets, and a spring loaded snap coupling element 84 joining one bracket 83 to the other. Each bracket 83 may be fabricated In two halves. During assembly, each half would be placed on a frame member 60, and a fastening means passed through the sand halves and the frame member, e.g. a bolt or nvet. The coupling element 84 includes protrusions 85, which are mounted on a leaf spring located Inside element 84. Each bracket 84 includes apertures 86 with which the protrusions locate to hold the coupling element 84 in place In the brackets 83. 'lio disconnect two attached three-wheeler pushchairs, the protrusions 85 are simply depressed and the coupling element pulled from the . . brackets 83. The protrusions have rounded heads so that the coupling element can be inserted into .

brackets 83 easily. Alternatively, a connector 68 of the type Illustrated in Figures 14 and 14a could be used Instead of coupling element 82. . A vehicle according to one aspect of the Invention may be manufactured such that all the wheels may be removed. Further, that vehicle may be provided with all elements of the connection means. This . would serve two functions. First, costs of production may be reduced, and second, from the users perspective, if one of the vehicles wears and needs to be replaced then any suitably specified vehicle will suffice, whereas if each vehicle Is only provtde1 with one half of the connection means then a speafc vehicle must be acquired.

Nevertheless, a vehicle according to one aspect of the Invention may be manufactured such that one of two vehicles is provided with removable wheels on one side thereof, and that vehicle Is connected to another vehicle that Is not provided with removable wheels, but Is provided with connection means for connection to the other vehicle.

The pushchairs may be have only a pair of wheel arrangements, a two wheeler pushchair, three wheel arrangements, a three wheeler pushchair, or four wheel arrangements, a four wheeler pushchair.

A vehicle according to the invention may Include more than two vehicle units.

Furthermore, there are many variations of the type of pushchair Illustrated in Figure 4. The Invention may be used with many similar designs of pushchair. . ë . .- ë . ë - ë

Claims

Clanns 1. 1\ hand propelled load carrying vehicle compnsmg at least hrst

and second vehicle units attachable one to the other; each vehicle unit compssmg two spaced apart side frames and a load supporting means between the two side frames, each side frame mounting at least a rear wheel and a handle member; wherem at least the rear wheel of at least one side frame of one of the vehicles Is detachably mounted on the said frame; wherein at least one of the side frames of one of the vehicle units Includes a first part of an attachment measls and at least one of the side frames of the other vehicle composes a second part of the attachment means; wherein the first part of the attachment means comprises at least two brackets secured to a said side frame at spaced apart locations, and the second part of the attachment means comprises at least two attachment elements, each element co-operating with one of the said at least two brackets to attach the two vehicle units together; wherein the or each of the detachably mounted wheels are each attachable to one of the.

said at least two attachment elements, and wherem detaching one of the said detachably . mounted wheels reveals osle of the said attachment elements. :.
2. 1Y hand propelled load carrying vehicle according to ( lam 1, wherein the first past of . . the attachment means comprises at least three brackets secured to a said side frame at. .. .e

spaced apart locations, and the second part of the attachment means comprises at least. -

three attachment elements, each element co-operating with one of the said at least three brackets to attach the two vehicle units together.
3. A hand propelled load carrying vehicle according to Claim I or 2, wherein each vehicle unit Includes at least one front wheel.
4. A hand propelled toad carrying vehicle according to (balm 3, wherein each side frame mounts a front wheel.
5. A hand propelled load carrying vehicle according to any preceding, wherein the front wheel and the rear wheel of both side frames of one of the vehicles are detachably mounted on the said frames.
6. A hand propelled load carrying vehtde according to (claim 5, wherein the front wheel and the rear wheel of both side frames of the other vehicle are detachably mounted on the said frames.
7. A hand propelled kind carrying vehicle according to any preceding claim, wherein said bracket Includes a tapered portion.
8. A hand propelled vehicle, wherein at least one of the attachment element includes a tapered element for engagement with the tapered portion of the bracket.
9. A hand propelled load carrying vehicle according to any of Claims 1 to 3, wherein each bracket comprises a substantially annular element, and each attachment element is Insertable Into the substantially annular element. :-
10. A hand propelled load carrying vehcle accorng to (Claim 9, wherem the substantially annular element is a tube or a collar.
11. A hand propelled load carrying vehicle according to any preceding claim, wherein the . - bracket and the attachment element are of the same shape in cross-section, the external..

dimension of the attachment element being smaller than the Internal Benson of the. . bracket. .
12. A hand propelled load carrying vehicle according to any preceding claim, wherein the handle member of the side of the frame of the vehidc mounting the said detachable wheels is also detachably mounted on the said frame, and wherein detachable handle member Is a part of one of the attachment elements.
1 3. A hand propelled load carrying vehicle according to Claim 12, wherein part of the detachable handle member passes through one of the brackets to attach two vehicle units together.
14. A hand propelled load carrying vehicle according to Claim 12 or 13, wherein the detachable handle member Is attachable to the side frame by means of corresponding male and female connectors, one of the connectors forming part of the frame and the other forming part of the handle member.
15. A hand propelled load carryulg vehicle according to any preceding dann, wherein the first and second parts of the attachment means each include part of a locking means.
16. A hand propelled load carrying vehicle according to Claim 15, wherein the lockmg means comprises a spring loaded protrusion and a bore in which the protrusion locates to lock together the first and second parts of the attachment means.
17. A hand propelled load carrying vehicle according to (2larm 16, wherein said protrusion has a rounded head.
18. A hand propelled load carrying vehicle according to Claim 15 to 16, wherein the stud Is :- Iocated n an elongate frame member or n the elements detachable from the said . elongate frame member.
19. A hand propelled load carrying vehicle according to Claim 18, wherein the bore Is . - located in an elongate frame member or in the elements detachable from the said. . elongate frame member. . ' . ë .. :
20. A hand propelled load carrying vehicle according to any preceding clann, wherein the detachably mounted front and rear wheels are attached to a stub, and the stub is detachably mountable on a free end of one of the elongate frame members.
21. A hand propelled load carrying vehicle according to (plasm 2(), wherem the stub is detachably mountable on a free end of one of the elongate frame members by means of corresponding male and female connectors.
22. A hand propelled load carrying vehicle according to any preceding claim, wherein one side frame of one of the vehicle units Is provided with the first part of the attachment means and the other side of the same vehicle unit Is provided with the second part of the attachment means.
23. A hand propelled load carrying vehicle according to Claim 22, wherem one side frame of the other vehicle unit Is provided with the first part of the attachment means.
24. A hand propelled vehicle according Lo Claim 23, wherein the other side of the same vehicle unit Is provided with the second part of the attachment means.
25. A hand propelled load carrying vehicle according to any preceding claim, wherem each vehicle unit is a pushchair, or a pram having a capacity to carry a single child.
26. A hand propelled load carrying vehicle, wherein at least one of the vehicle units Is a two wheeled pushchair or pram.
27. A hand propelled vehicle as claimed in any of Claims I to 25, wherein at least one of the vehicle units IS a three wheeled pushchair or pram. ' :- 23. A hand propelled vehicle as claimed n a Clam 26 or 27, further comprisng connecting means to connect the vehicle umts together distal from the handle member. :' . - 29. A hand propelled load carrying vehicle substantially as shown In, and as described with. . reference to, the drawings. .