# US 11,079,103 B2 · Wheelchair lighting control unit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,079,103 B2 - Document ID: US11079103B2 - Status: Granted - Kind: B2 - Application number: 16/582,951 - Filed: 2019-09-25 - Published: 2020-03-26 - Granted: 2021-08-03 - Earliest claimed: 2018-09-26 - Applicants: Michael Huprich - Inventors: Michael Huprich - Web page: https://patentgrep.com/patent/US11079103B2 ## CPC - F21V 33/0068: {Medical equipment} - A61G 5/10: Parts, details or accessories - F21S 9/02: the power supply being a battery or accumulator - F21V 23/007: {enclosed in a casing} - F21V 23/023: {Power supplies in a casing (F21V23/003 takes precedence)} - F21V 23/06: the elements being coupling devices {, e.g. connectors} - H05B 45/00: Circuit arrangements for operating light-emitting diodes [LED] - F21Y 2115/10: Light-emitting diodes [LED] - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00) - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED ## Abstract Wheelchair lighting control unit 1 comprising a housing to; control electronics 28 for driving at least one LED light of a wheelchair, the control electronics being arranged in the housing to; and a power supply unit 40 for supplying power to the wheelchair lighting control unit 1; said housing to having a power supply unit compartment 14 for receiving said power supply unit 40, said power supply unit compartment 14 being always open on a side wall of said housing to so that said power supply unit 40 can be inserted into and withdrawn from said power supply unit compartment 14; and said power supply unit 40 being releasably held in the power supply unit compartment 14 in the inserted position by means of at least one magnet 70, 72 and/or by means of at least one spring element 16, 18, 76 which is biased from the outside against a side face of the power supply unit 40. ## Claims ### Claim 1 Wheelchair lighting control unit (1) comprising: a. a housing (10); b. control electronics (28) driving at least one LED wheelchair light, the control electronics being arranged in the housing (10); and c. a power supply unit (40) for supplying power to the wheelchair lighting control unit (1); d. said housing (10) having a power supply unit compartment (14) for receiving said power supply unit (40), said power supply unit compartment (14) being always open on a side wall of said housing (10) so that said power supply unit (40) can be inserted into and withdrawn from said power supply unit compartment (14); e. said power supply unit (40) being releasably held in the power supply unit compartment (14) in the inserted position by means of at least one magnet (70, 72) and/or by means of at least one spring element (16, 18, 76) which is biased from the outside against a side face of the power supply unit (40); and f. wherein the power supply unit (40) comprises a magnetically connectable charging terminal (56). ### Claim 2 (depends on 1) Wheelchair lighting control unit according to claim 1, wherein the at least one magnet (70, 72) is combined with an electrical terminal (27, 53) of the power supply unit (40) to the control electronics (28). ### Claim 3 (depends on 1) Wheelchair lighting control unit according to claim 1, wherein the at least one magnet (70, 72) is disposed at an end wall of the power supply unit (40) or at the closed end of the power supply unit compartment (14). ### Claim 4 (depends on 1) Wheelchair lighting control unit according to claim 1, wherein at least two oppositely poled magnets (70, 72) are provided, wherein one magnet (70) is arranged at the power supply unit (40) and one magnet (72) is arranged at the power supply unit compartment (14) such that the two magnets (70, 72) attract each other, when the power supply unit (40) is in the inserted position. ### Claim 5 (depends on 1) Wheelchair lighting control unit according to claim 1, wherein said at least one spring element (16, 18) is configured as a band spring having a undulated cross-section. ### Claim 6 (depends on 1) Wheelchair lighting control unit according to claim 1, wherein said at least one spring element (16, 18) is integrally formed with said power supply unit compartment (14) and replaces a part of a wall of said power supply unit compartment (14). ### Claim 7 (depends on 1) Wheelchair lighting control unit according to claim 1, wherein the power supply unit compartment (14) comprises two spring elements (16, 18) arranged at an angle to each other and biased from the outer side against two different side surfaces of the power supply unit (40). ### Claim 8 (depends on 1) Wheelchair lighting control unit according to claim 1, wherein a foil (20) with a low-friction surface is arranged on a surface of the at least one spring element (16, 18) facing the power supply unit (40). ### Claim 9 (depends on 1) Wheelchair lighting control unit according to claim 1, wherein the control electronics (28) comprises a circuit board (30) on which cable terminals (32) or plug connectors (34) for tool-free contacting of electrical lines to the at least one LED light are arranged. ### Claim 10 (depends on 1) Wheelchair lighting control unit according to claim 1, wherein foils (22) having a low-friction surface are disposed on the inside of the power supply unit compartment (14). ### Claim 11 (depends on 1) Wheelchair lighting control unit according to claim 1, wherein the housing (10) having an lead-in chamfer (24) adjacent the opening of the power supply unit compartment (14). ### Claim 12 (depends on 1) Wheelchair lighting control unit according to claim 1, wherein the power supply unit (40) comprises a cuboid power supply unit housing (44, 46) having rounded edges. ### Claim 13 (depends on 1) Wheelchair lighting control unit according to claim 1, wherein the power supply unit (40) comprises an LED charge state indicator. ### Claim 14 (depends on 1) Wheelchair lighting control unit according to claim 1, wherein the power supply unit housing (44, 46) has an optical mark on the outside, for optically identifying the top of the power supply unit (40). ### Claim 15 (depends on 1) Wheelchair lighting control unit according to claim 1, wherein the power supply unit (40) comprises a USB power bank (42) which is integrated into a power supply unit housing (44, 46). ### Claim 16 (depends on 15) Wheelchair lighting control unit according to claim 15, wherein the power supply unit housing (44, 46) comprises at least one window (60) through which the LED charge state indicator (62) of the USB power bank (42) is visible. ### Claim 17 Wheelchair lighting control unit (1) comprising: a. a housing (10); b. control electronics (28) for driving at least one LED light of a wheelchair, the control electronics being arranged in the housing (10); and c. a power supply unit (40) for supplying power to the wheelchair lighting control unit (1); d. said housing (10) having a power supply unit compartment (14) for receiving said power supply unit (40), said power supply unit compartment (14) being always open on a side wall of said housing (10) so that said power supply unit (40) can be inserted into and withdrawn from said power supply unit compartment (14); and e. said power supply unit (40) being releasably held in the power supply unit compartment (14) in the inserted position by means of at least one magnet (70, 72) and/or by means of at least one spring element (16, 18, 76) which is biased from the outside against a side face of the power supply unit (40); and f. wherein the power supply unit (40) comprises an LED charge state indicator (62). ### Claim 18 (depends on 17) Wheelchair lighting control unit according to claim 17, wherein the power supply unit (40) comprises a socket (52) for electrically connecting the power supply unit (40) to the control electronics (28). ### Claim 19 Wheelchair lighting control unit (1) comprising: a. a housing (10); b. control electronics (28) for driving at least one LED light of a wheelchair, the control electronics being arranged in the housing (10); and c. a power supply unit (40) for supplying power to the wheelchair lighting control unit (1); d. said housing (10) having a power supply unit compartment (14) for receiving said power supply unit (40), said power supply unit compartment (14) being always open on a side wall of said housing (10) so that said power supply unit (40) can be inserted into and withdrawn from said power supply unit compartment (14); and e. said power supply unit (40) being releasably held in the power supply unit compartment (14) in the inserted position by means of at least one magnet (70, 72) and/or by means of at least one spring element (16, 18, 76) which is biased from the outside against a side face of the power supply unit (40); f. wherein the power supply unit (40) comprises a USB power bank (42) which is integrated into a power supply unit housing (44, 46). ### Claim 20 (depends on 19) Wheelchair lighting control unit according to claim 19, wherein the terminals of the USB power bank (42) are electrically connected to a magnetically connectable charging terminal (56) and a socket (52) for the electrical connection of the power supply unit (40) to the control electronics (28), in particular are electrically connected via electrical plug connectors.