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US 2010/0301587 A1Published application
Collapsible pushchair
Assignee100 Watt Limited
InventorsMichael Quinton Gilbertson, Steven James Moore
Life of this patent
Estimating the term…
Abstract
A collapsible pushchair can be expanded into a deployed state for carrying a child and collapsed into a portable state for being carried as a piece of luggage. Transformation of the pushchair between its deployed and portable states is enabled by the use of rotationally mounted chair legs.
Claims19
A collapsible pushchair comprising:
- a seat frame;
- at least one front leg;
- first and second rear legs;
- wherein:
- the pushchair has a first deployed state, and a second stored state in which the pushchair is collapsed into a size smaller than in the first deployed state,
- the entire at least one front leg and the entire first and second rear legs are directly rotatably mounted on a common shaft forming part of the seat frame, such that the entire at least one front leg and the entire first and second rear legs are all rotatable about the shaft in respective circular arcs centred on the shaft;
- the first and second rear legs have respectively first and second axes of rotation;
- and
- the first axis of rotation is not parallel to the second axis of rotation, such that distal ends of the rear legs spaced from the ends of the rear legs mounted on the seat frame are distanced from each other by a larger distance when in the first deployed state than when in the second stored state.
6 more elements
A collapsible pushchair according to claim 8 wherein the two front legs are both rotatable about a/the third axis of rotation, and the first and second rear legs are rotatable about (the) first and second axes of rotation which are inclined at an angle to the third axis of rotation such that:
- in the first deployed state the separation of ends of the rear legs distal from the shaft is larger than the separation of ends of the front legs distal from the shaft;
- and in the second stored state the separation of the distal ends of the rear legs is smaller than the separation of the distal ends of the front legs.
A collapsible pushchair comprising:
- a seat frame;
- at least one rear leg;
- first and second front legs;
- wherein:
- the entire at least one rear leg and the entire first and second front legs are directly rotatably mounted on a common shaft forming part of the seat frame, such that the entire at least one rear leg and the entire first and second front legs are all rotatable about the shaft in respective circular arcs centred on the shaft;
- the pushchair has a first deployed state, and a second stored state in which the chair is collapsed into a size smaller than in the first deployed state;
- and
- the first and second front legs have respectively a first and second axes of rotation, wherein the first axis of rotation is not parallel to the second axis of rotation, such that distal ends of the front legs spaced from the ends of the front legs mounted on the seat frame are distanced from each other by a larger distance when in the first deployed state than when in the second stored state.
5 more elements
A collapsible pushchair comprising:
- a seat frame;
- at least one front leg rotatably mounted on the seat frame;
- first and second rear legs rotatably mounted on the seat frame;
- wherein
- the entire at least one front leg and the entire first and second rear legs are directly rotatably mounted on a common shaft forming part of the seat frame, such that the entire at least one front leg and the entire first and second rear legs are all rotatable about the shaft in respective circular arcs centred on the shaft;
- and
- the pushchair has a first deployed state for seating a person, and a second stored state in which the pushchair is collapsed into a size smaller than in the first deployed state.
4 more elements
A collapsible pushchair comprising:
- a seat frame;
- at least one front leg;
- first and second rear legs;
- wherein
- the entire at least one front leg and the entire first and second rear legs are directly rotatably mounted on a common shaft forming part of the seat frame, such that the entire at least one front leg and the entire first and second rear legs are all rotatable about the shaft in respective circular arcs centred on the shaft;
- the pushchair has a first deployed state, and a second stored state in which the chair is collapsed into a size smaller than in the first deployed state;
- the first and second rear legs have respectively a first and second axes of rotation, wherein the first axis of rotation is not parallel to the second axis of rotation, such that distal ends of the rear legs spaced from the ends of the legs mounted on the seat frame are distanced from each other by a larger distance when in the first deployed state than when in the second stored state;
- and
- the at least one front leg and rear legs all rotate in the same sense from the first deployed state to the second stored state.
6 more elements
A collapsible pushchair according to claim 17 having a seat back moveably secured to the seat frame, such that the seat back can be reclined.
Dependencies are inferred from the claim text.