CA1136670A - Vehicle - Google Patents
VehicleInfo
- Publication number
- CA1136670A CA1136670A CA000339526A CA339526A CA1136670A CA 1136670 A CA1136670 A CA 1136670A CA 000339526 A CA000339526 A CA 000339526A CA 339526 A CA339526 A CA 339526A CA 1136670 A CA1136670 A CA 1136670A
- Authority
- CA
- Canada
- Prior art keywords
- vehicle
- axis
- castoring
- steering
- tilting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
Abstract
Abstract of the Invention A vehicle comprises a support surface which is mounted upon at least two carriers one of the carriers being steerable and having a castor like structure and in which steering can take place by tilting of the castoring axis of the castor like structure.
Description
11;~667a~
This invention relates to a vehicle and in particular to a steerable vehicle.
The present invention seeks to provide a steerable vehicle having a novel form of steering arrangement.
According to the present invention there is provided a vehicle having a support surface and a plurality of carriers on which the support surface is mounted. A castor like structure is provided which includes a castoring axis and castor element freely pivotable about the castoring axis for at least one of the carriers. Steering pivot means is provided for enabling tilting of the castoring axis relative to the support surface, and steering means is operable for tilting the castoring axis of the castor like structure about the steering pivot means to steer the vehicle.
According to an embodiment of the invention, there is provided a vehicle comprising a frame work, two rear wheels supporting the rear of said framework, a steerable castored wheel at the front of said framework, a seat member mounted towards the rear of said framework, a foot support crossbar mounted towards the front of said framework, and steering means operable by a person seated in the seat for tilting the castoring axis of said steerable castor wheel.
In a specific embodiment of the invention, there may be provided a vehicle comprising an "L" shaped framework having a base part for carrying luggage or other articles, an upright rear part connected to said base part, two fixed wheels for supporting the rear of said base part where it is connected said upright part, a castored wheel supporting the front of said base part and means for tilting the castoring B - 1 *
,.
PC/~
,.
1~36670 axis of said castored wheel to enable the vehicle to be steered.
In another specific embodiment of the invention, there is provided a vehicle comprising a substantially "U"
shaped frame with two horizontally extending parts spaced apart vertically and joined by a part extending between them, a pair of fixed wheels carrying one end of the lower of said two horizontally extending parts a castored wheel carrying the other end of said lower horizontally extending part and steering means for ~ - 2 -pc/~, .
~136670 tilting the castoring axis of said castored wheel to enable the vehicle to be steered.
The invention will now be described in greater detail, by way of example, with reference to the drawings, in which:-Figure 1 is a perspective view of a go-cart like trolley for use by children forming one embodiment of a vehicle in accordance with the invention;
Figure 2 is front views of the front part of the trolley indicating the position of the steering arrangement straight movement;
Figure 3 is a view similar to Figure 2 indicating the position for a left turn;
Figure 4 is a view similar to Figure 2 indicating the position for a right turn;
Figure 5 is a perspective view of a first form of luggage trolley forming a second embodiment of a vehicle in accordance with the invention;
Figure 6 is a perspective view of a variation of the luggage trolley shown in Figure 5; and Figure 7 is a perspective view of a shopping trolley forming a fourth embodiment of a vehicle in accordance with the invention.
Referring firstly to figures 1 to 4,the trolley depicted is of a go-cart like form and comprises a framework 1 of which is of generally "T" shape construction made up of tubular elements and consisting of a head portion 2 at each end of which there are a pair of fixed wheels 3. The stem 4 of the T is in two relatively moveable parts 5 and 6 of which the part 5 can pivot about its own axis within the part 6. The pivoted movement is limited by stops (not shown). At the front end 7 of this part is carried a castored wheel 8 which is used for steering as will be described. The pivotable part 5 carries an upwardly extending joystick like operating lever 9 together with a cross frame 10 including a cross bar 11 which enables a child sitting on a se2t 12 mounted on the frame 1 to support his feet above the ground and also to assist in the steering operation. A bent rod 13 forms a back to the seat.
In the operation of the trolley, in order to make the trolley to proceed straight ahead, the axis of the castored wheel 8 is maintained in an upright condition (Figure 2) and thus no biasing or tilting is applled to the castoring axis of the castored wheel 8.
In order to make the trolley turn to the left, the wheel carrying part 5 is pivoted to the left, thus tilting the axis of the castored wheel from the vertical and causing the castor wheel to turn about the castor axis towards the position shown in Figure 3 whereby the trolley will turn to the left.
In order to make the trolley move to the right, the wheel carrying part 5 is pivoted in the opposite direction i.e. to the right (Figure 4) thus making the castor axis incline in the opposite direction and cause the castored wheel 8 to turn about the castoring axis so as to steer the trolley to the right.
Where the trolley is to be used by children of different ages, the pivotal member S and its socket 6 may be telescopically arranged so that the distance between the cross bar foot rest 10 and the seat 12 can be varied to suit the child concerned.
Figures5 and 6 show two versions of the applications of the steering principal in accordance with the invention to a suit case or luggage transporter of the type often provided for the use of travellers at airports, stations and the like. Generally speaking the transporter 20 comprises an "L" shape framework 21 having a horizontally extending base portion 22 for receiving cases and other luggage and an upright rear portion 23 which may suitably carry a fixed or detachable - basket 24 for handbags and small luggage. In both figures, the base portion 22 is supported at its rear on two fixed wheels 25 and at its front on a single castored wheel 26 which is pivoted about a horizontal axis 27. .
In the arrangement shown in Figure 5, the castored wheel 26 is mounted on a horizontal rod 28 which extends the ]ength of the base portion 22 and is carried in bear;ngs 29 at each end so as to enable it to pivot about a horizontal axis. This rod 28 is connected at the front end to the castored ~heel and at the rear end is ~ovided with a handle 30 which moves with the rod 28 and extends upwards to the upper region of the rear portion 23. As can ~e seen, the upper portion of this handle 30 is provided with suitable hand grips 31 and is used to push or pull the transporter, steering ~eing achieved, at the same time, tilting the handle to right or left Stop means 32 are provided to prevent excesslve tilting of the han-lle 30.
In the transporter shown in Figure 6, the castored wheel 26 has its castoring axis extending upwardly by a handle 33 and the handle or the castoring frame 34 of the wheel 26 is pivoted about the horizontal axis to the front end of the base portion 22 of the transporter. The hand]e is provided with a hand grip 35 at its upper end and is used to push or pull the trolley, steering heing achieved by tilting of the handle to one side or the other. These stop means are shown at 36.
~ igure 7 shows a shopping trolley which is steered in accordance with the principle of the invention.
In this case the shopping trolley 40 comprises generally "U" shaped rramework 41 in which are provided an upper portion ~2 and a lower portion 43, both extending 113f~670 hori70nt~l1ly, and joined by a co~mecting portion 44.
Both the uppcr and the lower portions 42 and 43 are suitably provided with means 45 for retention of shopping baskets, supermarket baskets or the like 46.
The lower portion ~L3 is supported on two fixed wheels 47 at one end and by a single castored wheel 48 at the other end. In the case of this trolley, in order to raise the height of the lower portion 43 of the frame a suitab]e distance off the ground to make it easier to 1~ d, thefixed wheels are mounted on extended leg portions 49 and the castoring axis of the castor is extending upwardly as at 50. In fact the castoring axis is e~tending to a point where it merges into a suitable handle 51, which extends upwards to a suitable height for operation of the trolley. The horizontal pivot required 52 for enabling steering of the trolley may be provided e;ther at the lower portion 43 of the framework (as shown) or at the upper portion 42 of theframework.
With the handgrip 53provided at the end of the handle 51, the trolley may be pushcd or pulled as desired and at the same time steered by tilting the handle to one side or the other. Stops 54 are provided for the handle.
It will be appreciated that because of the basic nature ofthe principle of the invention, the uses 1~36670 to which the invention can be put are too numerous to mention in detail. However, as examples can be mentioned for industrial application:- mobile benches, hospital trolleys and stretchers, instrument and general tool trolleys, invalid carriages, motorized trolleys of various sorts, executive chairs, moveable filing cabinets and roll pallets. For home use it could be used for television stands, carpet sweepers and shampooers, moveable beds, coffee tables, tea trolleys, hostess trolleys, record and other storage units, moveable wardrobes, DIY moveable scaffolding decorating unlts and runners for positioning under articles of furniture such as cookers, fridges, washing machines etc. In the garden it could be applied to lawn mowers, work trolleys, water carriers, rubbish containers and cultivators. For use in toys it could be applied to scooters, baby walkers, and other mobile toys such as horses, bears etc., dolls prams tobbogans etc. It has further miscellaneous applications in golf trolleys, moveable car jacks, car work trolleys, push chairs or baby carriage, vehicle trailers, laundry containers etc.
As can be seen from this by no means exhaustive list, the principle of the invention can be applied, in general, wherever a steerable vehicle is required.
Furthermore, it is not necessary that the pc/ ~:
~ ~ .
~ ' 1~36670 carriers shal~ comprise wheels but they may also include skids, ice skate like arrangements, paired wheel arrangements sllch as are provided on roller skates or skate boards. However, it is envisaged that wheels are most likely to provide the most useful aspect of the invention.
Of course additional perfeatures could be provided as desired and these could include controlling the castoring axis by means of steering wheels and the like. Furthermore, it is not necessary that the device should in fact be operated on three wheels but could be operated on two wheels for such articles as scooters and arrangements could even be provided which would operate on a four wheel vehicle having a two castored wheels where axes are connected by a linkage so that they can be tilted together.
This invention relates to a vehicle and in particular to a steerable vehicle.
The present invention seeks to provide a steerable vehicle having a novel form of steering arrangement.
According to the present invention there is provided a vehicle having a support surface and a plurality of carriers on which the support surface is mounted. A castor like structure is provided which includes a castoring axis and castor element freely pivotable about the castoring axis for at least one of the carriers. Steering pivot means is provided for enabling tilting of the castoring axis relative to the support surface, and steering means is operable for tilting the castoring axis of the castor like structure about the steering pivot means to steer the vehicle.
According to an embodiment of the invention, there is provided a vehicle comprising a frame work, two rear wheels supporting the rear of said framework, a steerable castored wheel at the front of said framework, a seat member mounted towards the rear of said framework, a foot support crossbar mounted towards the front of said framework, and steering means operable by a person seated in the seat for tilting the castoring axis of said steerable castor wheel.
In a specific embodiment of the invention, there may be provided a vehicle comprising an "L" shaped framework having a base part for carrying luggage or other articles, an upright rear part connected to said base part, two fixed wheels for supporting the rear of said base part where it is connected said upright part, a castored wheel supporting the front of said base part and means for tilting the castoring B - 1 *
,.
PC/~
,.
1~36670 axis of said castored wheel to enable the vehicle to be steered.
In another specific embodiment of the invention, there is provided a vehicle comprising a substantially "U"
shaped frame with two horizontally extending parts spaced apart vertically and joined by a part extending between them, a pair of fixed wheels carrying one end of the lower of said two horizontally extending parts a castored wheel carrying the other end of said lower horizontally extending part and steering means for ~ - 2 -pc/~, .
~136670 tilting the castoring axis of said castored wheel to enable the vehicle to be steered.
The invention will now be described in greater detail, by way of example, with reference to the drawings, in which:-Figure 1 is a perspective view of a go-cart like trolley for use by children forming one embodiment of a vehicle in accordance with the invention;
Figure 2 is front views of the front part of the trolley indicating the position of the steering arrangement straight movement;
Figure 3 is a view similar to Figure 2 indicating the position for a left turn;
Figure 4 is a view similar to Figure 2 indicating the position for a right turn;
Figure 5 is a perspective view of a first form of luggage trolley forming a second embodiment of a vehicle in accordance with the invention;
Figure 6 is a perspective view of a variation of the luggage trolley shown in Figure 5; and Figure 7 is a perspective view of a shopping trolley forming a fourth embodiment of a vehicle in accordance with the invention.
Referring firstly to figures 1 to 4,the trolley depicted is of a go-cart like form and comprises a framework 1 of which is of generally "T" shape construction made up of tubular elements and consisting of a head portion 2 at each end of which there are a pair of fixed wheels 3. The stem 4 of the T is in two relatively moveable parts 5 and 6 of which the part 5 can pivot about its own axis within the part 6. The pivoted movement is limited by stops (not shown). At the front end 7 of this part is carried a castored wheel 8 which is used for steering as will be described. The pivotable part 5 carries an upwardly extending joystick like operating lever 9 together with a cross frame 10 including a cross bar 11 which enables a child sitting on a se2t 12 mounted on the frame 1 to support his feet above the ground and also to assist in the steering operation. A bent rod 13 forms a back to the seat.
In the operation of the trolley, in order to make the trolley to proceed straight ahead, the axis of the castored wheel 8 is maintained in an upright condition (Figure 2) and thus no biasing or tilting is applled to the castoring axis of the castored wheel 8.
In order to make the trolley turn to the left, the wheel carrying part 5 is pivoted to the left, thus tilting the axis of the castored wheel from the vertical and causing the castor wheel to turn about the castor axis towards the position shown in Figure 3 whereby the trolley will turn to the left.
In order to make the trolley move to the right, the wheel carrying part 5 is pivoted in the opposite direction i.e. to the right (Figure 4) thus making the castor axis incline in the opposite direction and cause the castored wheel 8 to turn about the castoring axis so as to steer the trolley to the right.
Where the trolley is to be used by children of different ages, the pivotal member S and its socket 6 may be telescopically arranged so that the distance between the cross bar foot rest 10 and the seat 12 can be varied to suit the child concerned.
Figures5 and 6 show two versions of the applications of the steering principal in accordance with the invention to a suit case or luggage transporter of the type often provided for the use of travellers at airports, stations and the like. Generally speaking the transporter 20 comprises an "L" shape framework 21 having a horizontally extending base portion 22 for receiving cases and other luggage and an upright rear portion 23 which may suitably carry a fixed or detachable - basket 24 for handbags and small luggage. In both figures, the base portion 22 is supported at its rear on two fixed wheels 25 and at its front on a single castored wheel 26 which is pivoted about a horizontal axis 27. .
In the arrangement shown in Figure 5, the castored wheel 26 is mounted on a horizontal rod 28 which extends the ]ength of the base portion 22 and is carried in bear;ngs 29 at each end so as to enable it to pivot about a horizontal axis. This rod 28 is connected at the front end to the castored ~heel and at the rear end is ~ovided with a handle 30 which moves with the rod 28 and extends upwards to the upper region of the rear portion 23. As can ~e seen, the upper portion of this handle 30 is provided with suitable hand grips 31 and is used to push or pull the transporter, steering ~eing achieved, at the same time, tilting the handle to right or left Stop means 32 are provided to prevent excesslve tilting of the han-lle 30.
In the transporter shown in Figure 6, the castored wheel 26 has its castoring axis extending upwardly by a handle 33 and the handle or the castoring frame 34 of the wheel 26 is pivoted about the horizontal axis to the front end of the base portion 22 of the transporter. The hand]e is provided with a hand grip 35 at its upper end and is used to push or pull the trolley, steering heing achieved by tilting of the handle to one side or the other. These stop means are shown at 36.
~ igure 7 shows a shopping trolley which is steered in accordance with the principle of the invention.
In this case the shopping trolley 40 comprises generally "U" shaped rramework 41 in which are provided an upper portion ~2 and a lower portion 43, both extending 113f~670 hori70nt~l1ly, and joined by a co~mecting portion 44.
Both the uppcr and the lower portions 42 and 43 are suitably provided with means 45 for retention of shopping baskets, supermarket baskets or the like 46.
The lower portion ~L3 is supported on two fixed wheels 47 at one end and by a single castored wheel 48 at the other end. In the case of this trolley, in order to raise the height of the lower portion 43 of the frame a suitab]e distance off the ground to make it easier to 1~ d, thefixed wheels are mounted on extended leg portions 49 and the castoring axis of the castor is extending upwardly as at 50. In fact the castoring axis is e~tending to a point where it merges into a suitable handle 51, which extends upwards to a suitable height for operation of the trolley. The horizontal pivot required 52 for enabling steering of the trolley may be provided e;ther at the lower portion 43 of the framework (as shown) or at the upper portion 42 of theframework.
With the handgrip 53provided at the end of the handle 51, the trolley may be pushcd or pulled as desired and at the same time steered by tilting the handle to one side or the other. Stops 54 are provided for the handle.
It will be appreciated that because of the basic nature ofthe principle of the invention, the uses 1~36670 to which the invention can be put are too numerous to mention in detail. However, as examples can be mentioned for industrial application:- mobile benches, hospital trolleys and stretchers, instrument and general tool trolleys, invalid carriages, motorized trolleys of various sorts, executive chairs, moveable filing cabinets and roll pallets. For home use it could be used for television stands, carpet sweepers and shampooers, moveable beds, coffee tables, tea trolleys, hostess trolleys, record and other storage units, moveable wardrobes, DIY moveable scaffolding decorating unlts and runners for positioning under articles of furniture such as cookers, fridges, washing machines etc. In the garden it could be applied to lawn mowers, work trolleys, water carriers, rubbish containers and cultivators. For use in toys it could be applied to scooters, baby walkers, and other mobile toys such as horses, bears etc., dolls prams tobbogans etc. It has further miscellaneous applications in golf trolleys, moveable car jacks, car work trolleys, push chairs or baby carriage, vehicle trailers, laundry containers etc.
As can be seen from this by no means exhaustive list, the principle of the invention can be applied, in general, wherever a steerable vehicle is required.
Furthermore, it is not necessary that the pc/ ~:
~ ~ .
~ ' 1~36670 carriers shal~ comprise wheels but they may also include skids, ice skate like arrangements, paired wheel arrangements sllch as are provided on roller skates or skate boards. However, it is envisaged that wheels are most likely to provide the most useful aspect of the invention.
Of course additional perfeatures could be provided as desired and these could include controlling the castoring axis by means of steering wheels and the like. Furthermore, it is not necessary that the device should in fact be operated on three wheels but could be operated on two wheels for such articles as scooters and arrangements could even be provided which would operate on a four wheel vehicle having a two castored wheels where axes are connected by a linkage so that they can be tilted together.
Claims (19)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A vehicle comprising a support surface, a plurality of carriers on which said support surface is mounted, a castor like structure including a castoring axis and a castor element freely pivotable about said castoring axis for at least one of said carriers, steering pivot means for enabling tilting of said castoring axis relative to said support surface and steering means operable for tilting said castoring axis of said castor like structure about said steering pivot means to steer the vehicle.
2. A vehicle as defined in claim 1 and comprising three said carriers.
3. A vehicle as defined in claim 2, and comprising two fixed carriers at one end and said castor like structure at the other end.
4. A vehicle as defined in claim 1, wherein said support surface comprises a platform mounted on a frame, with said carriers support directly to said frame.
5. A vehicle as defined in claim 1, wherein said carriers comprise wheels.
6. A vehicle as defined in claim 1, and comprising stop means for limiting the tilting of said castoring axis.
7. A vehicle comprising a framework, two wheels supporting a rear of said framework, a steerable castored wheel supporting a front of said framework and including a castoring axis and a castor wheel freely pivotable about said castoring axis, a seat member mounted towards the rear of said framework, a foot support crossbar mounted towards the front of said framework, steering pivot means for enabling tilting of said castoring axis relative to said seat member and steering means operable by a person seated in said seat for tilting said castoring axis of said steerable castor wheel about said steering pivot means to thereby steer the vehicle.
8. A vehicle as defined in claim 7, wherein said frame-work comprises a generally "T" shaped structure comprising a crossbar and a stem with said rear wheels located at the end of said crossbar and said castor wheel fixedly attached to the base of said stem, and said steering pivot means is arranged to enable at least said base part of said stem to be pivotable about its own axis to incline said castoring axis of said castor wheel.
9. A vehicle as defined in claim 8, wherein said steer-ing means comprises a joystick extending upwardly from and mounted on said pivotable part of said stem for controlling the movement of said pivotable part of said stem to steer the vehicle.
10. A vehicle as defined in claim 8, wherein said crossbar is mounted on said pivotable part of said stem for movement therewith.
11. A vehicle as defined in claim 7, and comprising a hand-operated brake acting on said rear wheels.
12. A vehicle as defined in claim 7, and comprising stop means for limiting tilting of said castoring axis.
13. A vehicle comprising an "L" shaped framework including a base part for carrying luggage or other articles and an upright rear part, two fixed wheels supporting the rear of said base part where it is connected said upright part, a castored wheel supporting the front of said base part and including a castoring axis and a castor wheel freely pivotable about said castoring axis, steering pivot means for enabling tilting of said castoring axis relative to said base part and steering means operable for tilting said castoring axis of said castored wheel about said steering pivot means to steer the vehicle.
14. A vehicle as defined in claim 13, wherein said steering pivot means comprises a horizontally rearwardly extending rod pivotable about its own axis for carrying said castored wheel, and said steering means comprises a handle connected to said rod for pivotal movement therewith and extending upwardly to the region of the top of said upright rear part.
15. A vehicle as defined in claim 13, wherein said steering pivot means comprises a horizontal pivot at the front of the base part for carrying said castored wheel and said steering means comprises a handle extending said castoring axis of said castored wheel upwards.
16. A vehicle as defined in claim 13, and comprising stop means for limiting the tilting of said castoring axis.
17. A vehicle comprising a substantially "U" shaped frame including two horizontally extending parts spaced apart vertically and joined by a part extending between them, a pair of fixed wheels carrying one end of the lower of the said two horizontally extending parts, a castored wheel carrying the other end of said lower horizontally extending part and including a castoring axis and a castor wheel freely pivotable about said castoring axis, steering pivot means for enabling tilting of said castoring axis relative to said frame and steering means operable for tilting said castoring axis of said castored wheel about said steering pivot means to steer the vehicle.
18. A vehicle as defined in claim 17, wherein said steering pivot means comprises a pivot with a horizontal axis on which said castored wheel is mounted and said steering means comprises a handle for extending said castoring axis.
19. A vehicle as defined in claim 17, and comprising stop means for limiting the tilting of said castoring axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000339526A CA1136670A (en) | 1979-11-09 | 1979-11-09 | Vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000339526A CA1136670A (en) | 1979-11-09 | 1979-11-09 | Vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1136670A true CA1136670A (en) | 1982-11-30 |
Family
ID=4115575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000339526A Expired CA1136670A (en) | 1979-11-09 | 1979-11-09 | Vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1136670A (en) |
-
1979
- 1979-11-09 CA CA000339526A patent/CA1136670A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |