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US 12,390,377 B2Granted
Wheelchair
AssigneeLeaderstat, Ltd.
InventorsEleanor Alvarez, Emily Alvarez, Benjamin Hubert, Mike Starkey
Life of this patent
Estimating the term…
Abstract
A wheelchair having a seat assembly and a base assembly. The base assembly includes a central frame, rear wheels, and leg assemblies. The leg assemblies are movable between at least a first position and a second position, which enables the leg assemblies to be stowed away when not in use. The seat assembly includes a seat component, a backrest component, and opposing side structures. The backrest component is connected to, and pivotable about, the side structures such that it may be folded down for storage or reclined for more comfortable sitting. The side structures include adjustable armrest assemblies that enable vertical adjustments of the armrests.
Claims20
A wheelchair comprising:
- a base assembly comprising:
- a central frame comprising a forward portion and a rear portion;
- a leg assembly comprising:
- a leg comprising an elongated body that defines a top end and a bottom end;
- a caster wheel subassembly connected to the bottom end of the leg;
- a connecting means for connecting the top end of the leg to the forward portion of the central frame, wherein:
- the connecting means provides for the movement of the leg between at least a first position and a second position;
- the location of the caster wheel subassembly is further away from the central frame when the leg is in the first position than when the leg is in the second position;
- and
- a seat assembly disposed above and connected to the central frame.
7 more elements
A wheelchair comprising:
- a base assembly comprising:
- a central frame comprising a forward portion and a rear portion;
- a leg assembly comprising:
- a leg comprising an elongated body that defines a top end and a bottom end;
- a caster wheel subassembly connected to the bottom end of the leg;
- a connecting means for connecting the top end of the leg to the forward portion of the central frame, wherein:
- the connecting means provides for the movement of the leg between at least a first position and a second position;
- the location of the caster wheel subassembly is further away from the central frame when the leg is in the first position than when the leg is in the second position;
- a seat assembly comprising:
- a seat component disposed above and connected to the central frame, the seat component comprising a forward portion and a rear portion;
- a first side structure and an opposing second side structure, the first and second side structures being disposed near the rear portion of the seat component;
- a backrest component disposed between the first side structure and the second side structure, the backrest component comprising a top portion and a bottom portion;
- a first trunnion joint and a second trunnion joint, wherein the first and second trunnion joints connect the bottom portion of the backrest component to the first side structure and the second side structure, respectively, and wherein:
- the first trunnion joint and the second trunnion joint enable the backrest to pivot between at least a first angular position and a second angular position;
- and
- the top portion of the backrest component is closer to the seat component when the backrest component is in the first angular position than in the second angular position;
- and
- a latch mechanism configured to lock the backrest in at least one of the first angular position and the second angular position.
15 more elements
A wheelchair comprising:
- a base assembly comprising:
- a central frame comprising a forward portion and a rear portion;
- a leg assembly comprising:
- a leg comprising an elongated body that defines a top end and a bottom end;
- a caster wheel subassembly connected to the bottom end of the leg;
- a connecting means for connecting the top end of the leg to the forward portion central frame, wherein:
- the connecting means provides for the movement of the leg between at least a first position and a second position;
- the location of the caster wheel subassembly is further away from the central frame when the leg is in the first position than when the leg is in the second position;
- a seat assembly comprising:
- a seat component disposed above and connected to the central frame, the seat component comprising a forward portion and a rear portion;
- a first side structure and an opposing second side structure, the first and second side structures being disposed near the rear portion of the seat component;
- a backrest component disposed between the first side structure and the second side structure, the backrest component comprising a top portion and a bottom portion;
- a first trunnion joint and a second trunnion joint, wherein the first and second trunnion joints connect the bottom portion of the backrest component to the first side structure and the second side structure, respectively, and wherein:
- the first trunnion joint and the second trunnion joint enable the backrest to pivot between at least a first angular position and a second angular position;
- and
- the top portion of the backrest component is closer to the seat component when the backrest component is in the first angular position than in the second angular position
- a latch mechanism configured to lock the backrest in at least one of the first angular position and the second angular position;
- and
- a height-adjustable armrest assembly provided on the first side structure.
16 more elements
Dependencies are inferred from the claim text.