Land vehicles – Wheeled – Extensible
Patent
1994-11-22
1997-04-22
Camby, Richard M.
Land vehicles
Wheeled
Extensible
280658, 280 4738, B62B 900
Patent
active
056223757
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to perambulators or push-chairs, primarily of the modern type also known as baby buggies.
The standard push-chair of the baby buggy type consists of framework on which a seat is suspended, the framework consisting of a pair of side frames of delta shape stabilized and held together by cross-bars and with two small diameter wheels at the lower corners of each side frame. The side frames are normally hinged so that the framework can be folded relatively flat, and may have one or more arms extended (e.g. to provide a push-bar or handle at a convenient height). The seat may be formed of canvas or similar material or may be a moulding of plastics material, having a roughly rectangular base, a roughly rectangular back, and two roughly triangular sides.
There are of course many developments of and variations on this basic design. For example, the cross-bars may be hinged to allow the chair to be folded more compactly; there may be a hood or cover; the seat suspension may be adjustable to allow the seat to be mounted in forward, reverse, and/or flat positions; a tray may be provided beneath the seat, to carry shopping purchases; and various braking arrangements may be provided; and various locking arrangements may be provided to minimize the risk of collapse when the chair is unfolded and in use.
Also, each of the two front wheels may actually be a pair of wheel discs mounted one on each side of a vertical shaft which is pivotally mounted on the side frame, to allow easier steering of the chair, and similarly each of the two rear wheels may actually be a pair of wheel discs mounted one on each side of a vertical shaft (though for the rear wheels, the vertical shaft may not be pivoted).
The chair may also be a multiple chair. It may have seats mounted one behind the other between the two side frames (the rear seat usually being higher than the front one);alternatively, it may have 2 (or even more) seats side by side (such chairs usually have a frame, matching the side frames, between each adjacent pair of seats).
The push-chair as described so far is intended to carry a single child. Occasionally, however, there is a need to carry two children. There are two ways of extending the basic design to achieve this. One is to double the width of the chair and provide two seats side by side in the framework (a third, central side frame may be included if desired); the other is to enlarge the size of the side frames and mount two seats one above and behind the other on the framework.
The main object of the present invention is to provide a novel form of push-chair which is capable of carrying a second child.
According to the present invention there is provided a push-chair characterized by a platform provided at its lower rear, with the rear wheels mounted substantially at the trailing edge of the platform, and with seat mounting means for mounting the seat substantially forward of the platform. One child can thus be carried in the seat and a second child can be carried in a standing position on the platform.
The present chair is appreciably less expensive than the known double seat chair designs, since it requires the addition of only a simple platform to the basic single-seat chair design, rather than the addition of a complete second seat.
The present chair is primarily intended for use with two children of different ages, with the older child being old enough to stand for a reasonable length of time. This may well be more convenient than the known double-seat chair designs, which are intended primarily for children of the same age. It is also considerably more convenient to use than the side-by-side double seat design.
It will be realized that the platform of the the present chair may also be used to carry a shopping bag, particularly a bag of upright form, and a suitable bag may be provided with the present chair. If desired, however, a net or tray may also be provided, extending forward under the seat from the front edge of the platform.
The seat suspension of the present chair may of cou
REFERENCES:
patent: 2917316 (1959-12-01), Gill
patent: 2993702 (1961-07-01), Gill
patent: 3061328 (1962-10-01), Konar
Camby Richard M.
Vanaman Frank
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