# US 11,077,386 B1 · Interlocking toys > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,077,386 B1 - Document ID: US11077386B1 - Status: Granted - Kind: B1 - Application number: 16/773,399 - Filed: 2020-01-27 - Published: 2021-07-29 - Granted: 2021-08-03 - Earliest claimed: 2020-01-27 - Assignees: Roylco, Inc. - Applicants: Roylco, Inc. - Inventors: Carolyn Voisin - Web page: https://patentgrep.com/patent/US11077386B1 ## CPC - A63H 33/084: {with grooves (dovetails A63H33/082)} - A63H 33/067: {with rotation or translation, e.g. of keyhole or bayonet type} - A63H 33/082: {with dovetails} - A63H: TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS ## Abstract The invention comprises a plurality of rectangular prism and/or cubic blocks. The sidewalls of the blocks comprise various combinations of grooves and/or pegs. Each groove extends along the respective sidewall within which it is disposed, from a corner wherein the top wall and the respective sidewall intersect to a corner wherein the bottom wall and the respective sidewall intersect. Each peg is configured to be slidably received into a groove disposed on another block within the plurality of blocks. ## Claims ### Claim 1 A plurality of rectangular prism blocks, each comprising: a rectangular top wall; a rectangular bottom wall opposite the top wall; a first rectangular sidewall adjacent the top wall and bottom wall and comprising two grooves or two pegs; a second square sidewall adjacent the top wall, bottom wall, and first sidewall comprising a groove or a peg; a third rectangular sidewall adjacent the top wall, bottom wall, and second sidewall comprising two grooves or two pegs; a fourth square sidewall adjacent the top wall, bottom wall, third sidewall, and first sidewall comprising a groove or a peg; wherein each groove extends along the respective sidewall within which it is disposed, from a corner wherein the top wall and the respective sidewall intersect to a corner wherein the bottom wall and the respective sidewall intersect, and wherein each peg is configured to be slidably received into a groove disposed on another block within the plurality of blocks. ### Claim 2 (depends on 1) The plurality of rectangular prism blocks of claim 1 wherein the top wall and bottom wall do not comprise a peg or groove. ### Claim 3 (depends on 1) The plurality of rectangular prism blocks of claim 1 wherein when a peg on a first block is slidably received into a groove on a second block to form interconnected blocks, the sidewall of the first block wherein the peg is disposed and the sidewall of the second block wherein the groove is disposed are flush. ### Claim 4 (depends on 3) The plurality of rectangular prism blocks of claim 3 wherein the interconnected first and second blocks are rotatable when the sidewalls are flush. ### Claim 5 (depends on 1) The plurality of rectangular prism blocks of claim 1 wherein at least one of the top wall and the bottom wall comprise structural elements. ### Claim 6 (depends on 1) The plurality of rectangular prism blocks of claim 1 wherein a peg of a first block in the plurality of blocks cannot be snap-fit into a groove of a second block in the plurality of blocks. ### Claim 7 (depends on 1) The plurality of rectangular prism blocks of claim 1 wherein each of the grooves comprise a recess extending inwardly into the sidewall. ### Claim 8 (depends on 1) The plurality of rectangular prism blocks of claim 1 wherein each of the pegs comprise a cylindrical neck portion extending perpendicularly from the sidewall and a head portion comprising an inner cylindrical portion and an outer half-spherical portion, wherein the inner cylindrical portion of the head has a greater diameter than the cylindrical neck portion. ### Claim 9 (depends on 8) The plurality of rectangular prism blocks of claim 8 wherein each of the grooves comprise a narrow portion which is adapted to receive the neck portion of the peg and a bulbous portion which is adapted to receive the head portion of the peg. ### Claim 10 (depends on 9) The plurality of rectangular prism blocks of claim 9 wherein the peg is rotatable about its axis within the groove. ### Claim 11 A plurality of cubic blocks comprising: a top wall; a bottom wall opposite the top wall; a first sidewall adjacent the top wall and bottom wall; a second sidewall adjacent the top wall, bottom wall, and first sidewall; a third sidewall adjacent the top wall, bottom wall, and second sidewall; a fourth square sidewall adjacent the top wall, bottom wall, third sidewall, and first sidewall; wherein at least two of the sidewalls comprise: a groove which extends along the respective sidewall within which it is disposed, from a corner wherein the top wall and the respective sidewall intersect to a corner wherein the bottom wall and the respective sidewall intersect, or a peg which is configured to be slidably received into a groove disposed on another block within the plurality of blocks. ### Claim 12 (depends on 11) The plurality of plurality of cubic blocks of claim 11 wherein the first sidewall, second sidewall, third sidewall, and fourth sidewall each comprise a peg. ### Claim 13 (depends on 11) The plurality of plurality of cubic blocks of claim 11 wherein the first sidewall, second sidewall, third sidewall, and fourth sidewall each comprise a groove. ### Claim 14 (depends on 11) The plurality of plurality of cubic blocks of claim 11 wherein the first sidewall comprises a peg and the third sidewall comprises a groove, and wherein the second sidewall and fourth sidewall do not comprise a groove or peg. ### Claim 15 (depends on 11) The plurality of plurality of cubic blocks of claim 11 wherein the first sidewall comprises a peg, the second sidewall comprises a peg, the third sidewall comprises a groove, and the fourth sidewall comprises a groove. ### Claim 16 (depends on 11) The plurality of plurality of cubic blocks of claim 11 wherein when a peg on a first block is slidably received into a groove on a second block to form interconnected blocks, the sidewall of the first block wherein the peg is disposed and the sidewall of the second block wherein the groove is disposed are flush. ### Claim 17 (depends on 11) The plurality of cubic blocks of claim 11 wherein each of the grooves comprise a recess extending inwardly into the sidewall. ### Claim 18 (depends on 11) The plurality of cubic blocks of claim 11 wherein each of the pegs comprise a cylindrical neck portion extending perpendicularly from the sidewall and a head portion comprising an inner cylindrical portion and an outer half-spherical portion, wherein the inner cylindrical portion of the head has a greater diameter than the cylindrical neck portion. ### Claim 19 (depends on 18) The plurality of cubic blocks of claim 18 wherein each of the grooves comprise a narrow portion which is adapted to receive the neck portion of the peg and a bulbous portion which is adapted to receive the head portion of the peg. ### Claim 20 (depends on 19) The plurality of cubic blocks of claim 19 wherein the peg is rotatable about its axis within the groove.