Mobile educational toy

Claim 2

An educational toy comprising a plurality of toy units, each unit comprising a mobile carriage structure, a single graphic block, and a coupling means for linking to other toy units, said coupling means providing for a detachable and pivotal linking in longitudinal alignment to other toy units, said coupling means being attached to said carriage structure, each of said graphic blocks being shaped in the form of an alphabet letter, number, or other symbol, said carriage structure being securely connected to said graphic block such that said carriage structure can be lifted by grasp of said graphic block, said carriage structure having a wheel means and a base, said wheel means being connected to said base, said wheel means making said carriage structure mobile, said plurality of toy units being detachably coupled to each other such that symbolic relationships between said graphic blocks can be formed by selective arrangement of said toy units.

Claim 3

The educational toy of claim 1, wherein said carriage structure is connected to said graphic block such that said graphic block is substantially fully visible in side elevational view of said toy unit.

Claim 4

The educational toy of claim 2 wherein said graphic block is connected to said carriage structure in fixed alignment relative to said carriage structure.

Claim 5

The educational toy of claim 3 wherein said wheel means comprises at least one wheel and a maximum of two wheels.

Claim 6

The educational toy of claim 4 wherein said carriage structure and said graphic block are detachable from one another.

Claim 7

The educational toy of claim 5 wherein said graphic block has a longitudinal groove cut upwardly from the bottom surface of said graphic block, and said base has a ridge to be positioned in said groove to connect said carriage structure and said graphic block.

Claim 8

The educational toy of claim 6 wherein said base has a transverse bore, and said wheel means comprises an axle, two wheels, and two caps, said axle passing through said bore, said wheels being mounted on said axle on opposite longitudinal sides of said carriage structure, said wheels being retained on said axle by said caps.

Claim 9

An educational toy comprising a plurality of toy units, each unit comprising a mobile carriage structure, a single graphic block and a coupling means for linking to other toy units, said coupling means providing for a detachable and pivotal linking in longitudinal alignment to other toy units, said coupling means being attached to said carriage structure, each of said graphic blocks being shaped in the form of an alphabet letter, number, or other symbol, said carriage structure being connected to said graphic block, said carriage structure and said graphic block being detachable from one another, said graphic block having a longitudinal groove cut upwardly from the bottom surface thereof, said carriage structure having a wheel means and a base, said wheel means comprising at least one wheel and a maximum of two wheels, said wheel means being connected to said base, said wheel means making said carriage structure mobile, said base having a ridge to be positioned in said groove to connect said carriage structure and said graphic block, said ridge having an offset portion and said groove having a corresponding offset portion, whereby said graphic block can be connected to said carriage structure only if aligned in one specific direction relative to said carriage structure, said plurality of toy units being detachably coupled to each other such that symbolic relationships between said graphic blocks can be formed by selective arrangement of said toy units.

Claim 10

An educational toy comprising a plurality of toy units, each unit comprising a mobile carriage structure, a single graphic block and a coupling means for linking to other toy units, said coupling means providing for a detachable and pivotal linking in longitudinal alignment to other toy units, said coupling means being attached to said carriage structure, each of said graphic blocks being shaped in the form of an alphabet letter, number, or other symbol, said carriage structure being connected to said graphic block, said carriage structure and said graphic block being detachable from one another, said graphic block having a longitudinal groove cut upwardly from the bottom surface thereof, said carriage structure having a wheel means and a base, said wheel means comprising at least one wheel and a maximum of two wheels, said wheel means being connected to said base, said wheel means making said carriage structure mobile, said base having a ridge to be positioned in said groove to connect said carriage structure and said graphic block, said ridge having an offset portion and said groove having a corresponding offset portion, whereby said graphic block can be connected to said carriage structure only if aligned in one specific direction relative to said carriage structure, said plurality of toy units being detachably coupled to each other such that symbolic relationships between said graphic blocks can be formed by selective arrangement of said toy units.

Claim 11

The educational toy of claim 8 wherein said carriage structures are of uniform size and appearance.

Claim 12

An educational toy comprising a plurality of toy units, each unit comprising a mobile carriage structure, a single graphic block, and a coupling means for linking to other toy units, said coupling means providing for a detachable and pivotal linking in longitudinal alignment to other toy units, said coupling means being attached to said carriage structure, each of said graphic blocks being shaped in the form of an alphabet letter, number, or other symbol, said carriage structure being connected to said graphic block, said carriage structure and said graphic block being detachable from one another, said carriage structure having a wheel means and a base, said wheel means being connected to said base, said wheel means making said carriage structure mobile, said graphic block having a longitudinal groove cut upwardly from the bottom surface thereof, said base having a ridge to be positioned in said groove to connect said carriage structure to said graphic block, said ridge having an offset portion, said groove having a corresponding offset portion, whereby said graphic block can be connected to said carriage structure only if aligned in one specific direction relative to said carriage structure, said plurality of toy units being detachably coupled to each other such that symbolic relationships between said graphic block can be formed by selective arrangement of said toy units.

Claim 13

An educational toy comprising a plurality of toy units, each unit comprising a mobile carriage structure, a single graphic block, and a coupling means for linking to other toy units, said coupling means providing for a detachable and pivotal linking in longitudinal alignment to other toy units, said coupling means being attached to said carriage structure, each of said graphic blocks being shaped in the form of an alphabet letter, number, or other symbol, said carriage structure being connected to said graphic block, said carriage structure and said graphic block being detachable from one another, said carriage structure having a wheel means and a base, said wheel means being connected to said base, said wheel means making said carriage structure mobile, said graphic block having a longitudinal groove cut upwardly from the bottom surface thereof, said base having a ridge to be positioned in said groove to connect said carriage structure to said graphic block, said ridge having an offset portion, said groove having a corresponding offset portion, whereby said graphic block can be connected to said carriage structure only if aligned in one specific direction relative to said carriage structure, said plurality of toy units being detachably coupled to each other such that symbolic relationships between said graphic block can be formed by selective arrangement of said toy units.

Claim 14

The educational toy of claim 10 wherein said carriage structures are of uniform size and appearance.