# US 12,603,523 B2 · Electronic charging shelf system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,603,523 B2 - Document ID: US12603523B2 - Status: Granted - Kind: B2 - Application number: 19/232,358 - Filed: 2025-06-09 - Published: 2025-10-02 - Granted: 2026-04-14 - Earliest claimed: 2018-11-09 - Assignees: Wbtec, LLC - Applicants: Wbtec, LLC - Inventors: Wieslaw Bober; Kamil Sienkiel; Dominik Stanisław Sienkiel - Web page: https://patentgrep.com/patent/US12603523B2 ## CPC - H02J 7/731: {specially adapted for holding portable devices containing batteries (H02J7/751 takes precedence)} - H02J 50/10: using inductive coupling - A47B 46/005: {by displacement in a vertical plane; by rotating about a horizontal axis} - H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices - H02J 50/90: involving detection or optimisation of position, e.g. alignment - A47B 2220/0091: Electronic or electric devices - H02J 7/35: with light sensitive cells - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - A47B: TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE (furniture jointing F16B) ## Abstract A cassette shelf mechanism includes a mounting plate; a trolley equipped with rollers mounted on the mounting plate, allowing movement in an up-down direction; a rotary hinge attached to the trolley, including a lower part; a pivot hinge including an upper part connected to a shelf plate; and an extension tensioning module mounted on the mounting plate, which includes a cable connected to the trolley to facilitate the movement in the up-down direction, wherein the shelf plate is configured to unfold from a closed to an open position by rotating the upper part of the rotary hinge relative to the lower part. ## Claims ### Claim 1 A cassette shelf mechanism, comprising: a mounting plate; a trolley equipped with rollers mounted on the mounting plate, allowing movement in an up-down direction; a rotary hinge attached to the trolley, including a lower part; a pivot hinge including an upper part connected to a shelf plate; an extension tensioning module mounted on the mounting plate, which includes a cable connected to the trolley to facilitate the movement in the up-down direction; and a direction selection mechanism configured to bias a rotation of the shelf plate in a user-selected direction, wherein the shelf plate is configured to unfold from a closed to an open position by rotating the upper part of the rotary hinge relative to the lower part. ### Claim 2 (depends on 1) The cassette shelf mechanism of claim 1, wherein the extension tensioning module includes, at least one of, a spring or a hydraulic damper. ### Claim 3 (depends on 1) The cassette shelf mechanism of claim 1, further comprising: a motor configured to facilitate the movement in the up-down direction. ### Claim 4 (depends on 1) The cassette shelf mechanism of claim 1, wherein the mounting plate is attached directly to a piece of furniture. ### Claim 5 (depends on 1) The cassette shelf mechanism of claim 1, further comprising, at least one of, an automatic braking system or load sensor to prevent accidental movement or overloading. ### Claim 6 (depends on 1) The cassette shelf mechanism of claim 1, wherein the shelf plate is configured to unfold from the closed position to the open position by rotating approximately 90 degrees relative to the mounting plate. ### Claim 7 (depends on 1) The cassette shelf mechanism of claim 1, wherein the shelf plate comprises an integrated electronic system including a wireless charger configured to inductively charge a mobile electronic device positioned on the shelf plate. ### Claim 8 (depends on 7) The cassette shelf mechanism of claim 7, wherein the integrated electronic system further comprises a positioning system configured to locate a position of the mobile electronic device on the shelf plate and align a charging coil with the mobile electronic device. ### Claim 9 (depends on 1) The cassette shelf mechanism of claim 1, further comprising a locking mechanism configured to retain the shelf plate in the open position during use. ### Claim 10 (depends on 1) The cassette shelf mechanism of claim 1, wherein the shelf plate comprises a clamp configured to physically secure a mobile electronic device to the shelf plate during charging. ### Claim 11 A method of operating a cassette shelf mechanism, the method comprising: mounting a trolley equipped with rollers on a mounting plate to allow movement in an up- down direction; attaching a rotary hinge to the trolley, the rotary hinge including a lower part; connecting a pivot hinge to the rotary hinge, the pivot hinge including an upper part connected to a shelf plate; mounting an extension tensioning module on the mounting plate, the extension tensioning module including a cable connected to the trolley to facilitate movement in the up-down direction; operating a direction selection mechanism to bias a rotation of the shelf plate in a user-selected direction; and unfolding the shelf plate from a closed position to an open position by rotating the upper part of the rotary hinge relative to the lower part. ### Claim 12 (depends on 11) The method of claim 11, wherein the extension tensioning module includes at least one of a spring or a hydraulic damper. ### Claim 13 (depends on 11) The method of claim 11, further comprising: providing a motor to facilitate the movement in the up-down direction. ### Claim 14 (depends on 11) The method of claim 11, further comprising: attaching the mounting plate directly to a piece of furniture. ### Claim 15 (depends on 11) The method of claim 11, further comprising: incorporating, at least one, of an automatic braking system or a load sensor to prevent accidental movement or overloading. ### Claim 16 (depends on 11) The method of claim 11, wherein the shelf plate is unfolded from the closed position to the open position by rotating approximately 90 degrees relative to the mounting plate. ### Claim 17 (depends on 11) The method of claim 11, wherein the shelf plate includes an integrated electronic system including a wireless charger configured to inductively charge a mobile electronic device positioned on the shelf plate. ### Claim 18 (depends on 17) The method of claim 17, wherein the integrated electronic system includes a positioning system, the positioning system configured to locate a position of the mobile electronic device on the shelf plate and align a charging coil with the mobile electronic device. ### Claim 19 (depends on 11) The method of claim 11, further comprising: engaging a locking mechanism to retain the shelf plate in the open position during use. ### Claim 20 (depends on 11) The method of claim 11, wherein the shelf plate includes a clamp configured to physically secure a mobile electronic device to the shelf plate during charging.