Cargo cart for wheeled mobility device
AssigneeJosé Silva
InventorsJose Freitas Silva, Angus R. Colson, JR., Hugh Williams, Gavin K. Wong, Keith W. Reynolds
Life of this patent
Estimating the term…
Abstract
Cargo cart 10 can be used independently or attached to a conventional walker 101. Cooperative attach means 40 connect cart 10 in front of walker 101 through roll leader 44, which propels and steers cart 10 in response to user's control of walker 101. In attached mode, rear wheels 34 of cart 10 are suspended above travel surface to allow cart 10 to be steered easily and predictably by roll leader 44. Cart 10 is attached and detached with one hand without tools. Handle 50 and optional cargo basket 29 fold flat for storage. Slots in peripheral rails 24 retain cargo that is wider than cargo support 28.
Claims17
A cart selectively attachable to a walker having a wheeled front end, which travels over a surface;
- comprising:
- a cart frame including
- a first end;
- and
- a second end spaced apart from said first end;
- said first and second ends defining a longitudinal axis therebetween;
- a cargo support connected to said cart frame;
- at least one caster attached to said second end for rollingly supporting said second end on the surface;
- a pair of wheels attached to said first end in a spaced-apart relationship for rollingly supporting said first end, each said wheel having a rotational axis perpendicular to the longitudinal axis;
- a handle attached to said frame;
- and
- attachment means for selectively attaching said cart to the walker such that in the attached position said pair of wheels is supported above and not touching the travel surface and said caster is in contact with the travel surface;
- such that propelling and steering the walker results in propelling of said cart and steering said cart in the same direction as the walker;
- and such that in the unattached position, said pair of wheels contacts the travel surface, allowing said cart to be used independently of the walker by using said handle to control said cart.
In combination:
- a walker that travels over a surface, including:
- at least one wheel for traveling over a surface;
- and
- control means for accepting movement and steering by a user;
- and
- a cart selectively attachable to said walker, including:
- a cart frame including
- a first end;
- and
- a second end spaced apart from said first end;
- said first and second ends defining a longitudinal axis therebetween;
- a cargo support connected to said cart frame;
- at least one caster attached to said second end for rollingly supporting said second end on the surface;
- a pair of wheels attached to said first end in a spaced-apart relationship, for rollingly supporting said first end, each said wheel having a rotational axis perpendicular to the longitudinal axis;
- and
- a handle attached to said frame;
- and
- cooperative attachment means for selectively attaching said cart to said walker such that in the attached position said pair of wheels is supported above and not touching the travel surface and said caster is in contact with the travel surface;
- such that propelling and steering said walker results in propelling of said cart and steering said cart in the same direction as said walker;
- and such that in the unattached position, said pair of wheels contacts the travel surface, allowing said cart to be used independently of said walker by using said handle to control said cart.
A cart with two modes of movement over a travel surface, including:
- a first end;
- a second end;
- said first and second ends defining a cart longitudinal axis therebetween;
- wheels;
- including:
- at least one caster attached to said second end and extending toward the travel surface for rollingly supporting said second end;
- and
- at least two non-pivoting wheels attached to said first end, spaced apart, and extending toward the travel surface for rollingly supporting said first end;
- said non-pivoting wheels each having an axis of rotation perpendicular to the cart longitudinal axis;
- a cargo support surface disposed over said wheels;
- a handle attached near an edge of said cargo support surface;
- and
- attachment means for selectively attaching said cart to a steerable rolling device such that said at least two non-pivoting wheels of said cart are supported above the travel surface when attached;
- said attached cart being controlled by the steerable rolling device such that said cart travels oriented with said second end toward the direction of travel in response to a user's manipulation of the steerable rolling device;
- and such that said unattached cart is controlled by a user holding said handle and said cart may travel oriented in either direction.
Dependencies are inferred from the claim text.