Folding chassis for manually driven carrier vehicles capable of traversing obstacles
AssigneeTrifold, LLC
InventorsLeonid Khodor, Julia Khodor-Beloborodov
Life of this patent
Estimating the term…
Abstract
Disclosed is a folding chassis of manually driven carrier vehicles, for example, hand trucks, carts, and strollers, capable of moving over uneven or spongy surfaces and surmounting obstacles. The chassis includes a frame having a first plane, an arm with an axle, and a hub having a plurality of wheels. The arm is rotatably attached to the frame with the hub rotatably disposed onto the axle and each of the plurality of wheels is rotatably attached to said hub around an axis parallel to said axle. The arm is configured to pivot between at least positions of the hub been generally perpendicular to said first plane and the hub been juxtaposed to said first plane.
Claims14
A folding chassis comprising:
- a frame having a reference plane;
- an arm with an axle, said arm rotatably attached to said frame;
- and
- a hub having a plurality of wheels, said hub rotatably disposed onto said axle;
- wherein said plurality of wheels has a diameter at least equal to a half of a width of said frame, each of said plurality of wheels is rotatably attached to said hub around an axis parallel to said axle, and said arm is configured to pivot between at least a first and a second positions of said hub, wherein, in the first position, said hub is generally perpendicular to said reference plane and wherein, in the second position, said hub is adjacent and parallel to said reference plane.
A folding stroller chassis, comprising:
- a frame having a reference plane;
- an arm with an axle, said arm rotatably attached to said frame;
- a platform pivotally attached to said frame and linked to said arm, said platform configured to pivot within a predetermined range relative to said reference plane;
- and
- a hub having a plurality of wheels, said hub rotatably disposed onto said axle;
- wherein said plurality of wheels has a diameter at least equal to a half of a width of said frame, each of said plurality of wheels is rotatably attached to said hub around an axis parallel to said axle, and said arm configured to pivot between at least a first and a second positions of said hub, wherein, in the first position, said hub is generally perpendicular to said reference plane and wherein, in the second position, said hub is adjacent and parallel to said reference plane.
Dependencies are inferred from the claim text.